Hi all doing a newsletter for our caravan club in North Queensland. Would like to do a basic article for those (like me) who does not understand solar and caravans. So your input would be greatly appreciated.
What do you need to start?
How is easy is it to set up?
Can this be done by people like me who know nothing
and what will work when all set up.
Thanking you in advance
Barb
oldbobsbus said
02:32 PM Oct 20, 2014
Welcometo the Forum Barb..
You could start by using the Search button above as there would be 100 threads on the subject..
I am sure you would find enough info to fill a book or 2.
You would also do well to get someone with lots of knowledge on the subject to write the article for you.. that way you aren't giving others misinformation because of your lack of knowledge on the subject.
-- Edited by oldbobsbus on Monday 20th of October 2014 02:36:34 PM
barbandprairie said
03:02 PM Oct 20, 2014
Thanks Bob
I did look on the Search button and started reading some of things that have been written but thought because this is a techie site you were all talking above my head.
It is not as easy or simple as l thought to have solar with the caravan
Barb
oldbobsbus said
03:24 PM Oct 20, 2014
barbandprairie wrote:
Thanks Bob I did look on the Search button and started reading some of things that have been written but thought because this is a techie site you were all talking above my head.
It is not as easy or simple as l thought to have solar with the caravan
Barb
And for that exact reason you shouln't be the one writing the article..
Collyn Rivers has written extensively on the subject but again he also talks in technical terms..
Maybe someone else here would be prepared to write you a short article explaining Solar in layman's terms, I'm not really much good at putting things down on paper.
Blue said
09:28 PM Oct 20, 2014
barbandprairie wrote:
Hi all doing a newsletter for our caravan club in North Queensland. Would like to do a basic article for those (like me) who does not understand solar and caravans. So your input would be greatly appreciated.
What do you need to start?
How is easy is it to set up?
Can this be done by people like me who know nothing
and what will work when all set up.
Thanking you in advance
Barb
here's a basic package that you need to start with
You will note that the 300Watt inverter is "Pure Sine Wave" ... don't get one that isn't or you risk blowing up your products..
barbandprairie said
09:53 PM Oct 20, 2014
Thanks Blue
this is all l need to give to interested people to start them off and what they can expect their solar to run
It is a bit like a mobile phone you start with the basic then add all the apps to get more out of your phone.
oldtrack123 said
11:03 PM Oct 20, 2014
HI Barbara I would suggest you get advice from someone who is not a Ebay seller pushing their line Especialy when they do not realy know much about solar!
I do not think simply indicating a stock kit is the answer to your question
Also, an inverter should be very low on the list due to the potential dangers of using multiple 240V Class1 appliances [have 3pin plugs]at the same time.
Best & safest to stick to 12V wherever possible & more efficient use of available power.
It is rather difficult to give All the needed details on a forum such as this.
AS each case will be dependent on many factors such as;
Equipment rating [WATTs]
Expected hrs of use of each per day
Period of "off" mains use [no mains charging]
Possible alternative charging for long spells of bad weather for solar charging
But the basic set up simply consists of:
Solar panels [size dependent on above factors]
Solar regulator, depending on panel arrangement[ 12v or 24V] size req, & available roof space, a simple PWM reg or a MPPT reg
Deep cycle battery, size dependent on daily use requirements, no of days that it may be required to supply without recharging.
but i would suggest that your readers get some of Collyn Rivers Books on the subject.
They are quite comprehensive & are not overly technical[well not to mel]
Other than that refer them to this or other RV/ Caravan style forums where they can ask questions specific to their reqs & will get plenty of advice, but may have to sort the wheat from the chaff.
PeterQ
-- Edited by oldtrack123 on Monday 20th of October 2014 11:37:21 PM
Blue said
07:36 AM Oct 21, 2014
barbandprairie wrote:
Thanks Blue this is all l need to give to interested people to start them off and what they can expect their solar to run It is a bit like a mobile phone you start with the basic then add all the appsto get more out of your phone.
that is exactly 100% right barb...
there's a lot of handy folk out there that could easily get started with solar charging systems if all the "mystery" and "naysayers" get taken out of it..
in our first van all we had was ONE battery which only charged when plugged into 240v.. so you either had to go to a park or carry a noisy generator.. we could stay a night or two free camping on this one battery which powered our LED lights and 12v TV and booster..
in our next caravan we had
one solar panel
one solar regulator/charger
one 100ah battery
again, this ran our van LED lights, TV & areal booster, and there's also a 12v cigarette socket
to this we upgraded to a bigger panel from 90 to 120 watts
added another 100ah battery
added a 300watt Pure Sine Wave inverter to run the mrs Sleep Apnoea machine and run computers
we also run a Diesel Heater which runs on 12 Volts
so as you can see... we started off with the very Basics to get going and to understand our power usage and what we could actually run on our batteries..
this is the best way... just get the basics and get going.. a lot of handy Nomads and Caravaners have already installed extra batteries into their cars to run portable fridges etc and if they can do this then they can install their own Solar Charging System..
btw... most of my upgraded equipment has been purchased off Ebay and as long as you buy of an Ebayer with a High review score you'll be fine...
everthing I've purchased off ebay all works 100% and I have saved 1000s of dollars
barbandprairie said
08:22 AM Oct 21, 2014
Hi Blue
Your information has been great information to pass on to fellow caravanners who are new to solar
Barb
barbandprairie said
08:25 AM Oct 21, 2014
Porter Q thanks for your advise as well, l will write what both of you have said for our readers to view
Barb
Treecrest14 said
09:24 AM Oct 21, 2014
Gday
For some guidance, check out these guys website - they have had simple articles on Solar..
Do a google search for Aussie Batteries & Solar The look at past articles..
Glen
TAJ said
06:39 PM Oct 21, 2014
thanks blue easy explained and easy to follow
suenray
Blue said
09:05 PM Oct 21, 2014
this picture will help you visualise how a solar charging unit is set up.. demystify it a bit
as you can see, in this pic they are running the light straight off the solar controller unit..
you do not have to do this, you can run items straight off the battery as long as you run a fuse on the positive side..
inverters will have an internal fuse, usually at the back so that you can just take a cap off, or if its a 12v car inverter with a cigarette lighter plug it'll have a fuse inside the plug..
I run my diesel heater straight off the battery with a fuse in the positive supply power wire...
MaryJane said
10:04 AM Oct 22, 2014
barbandprairie wrote:
Hi all doing a newsletter for our caravan club in North Queensland. Would like to do a basic article for those (like me) who does not understand solar and caravans. So your input would be greatly appreciated.
What do you need to start?
How is easy is it to set up?
Can this be done by people like me who know nothing
and what will work when all set up.
Thanking you in advance
Barb
I asked the question on here for recommendations. Bought through Low Energy Developments (they sell on eBay but I rang the shop for advice and got a better deal) in Melbourne (Delivery was $15 for folding 120w). Read the instructions, plugged the panels in and within hours my battery (100ah) is topped up. I charge iphone and ipad, watch tv and listen to music, lights, diesel heater, water pump etc.
it couldn't have been simpler. I like simple. I've no idea how it works, but it works and that's all I care about
cheers,
MJ
oldtrack123 said
11:08 AM Oct 22, 2014
HI Mary Jane
Yes, if someone wants just a portable panel [ low capacity,] that is OK
Just go out & buy a portable unit from any REPUTABLE seller
Place facing direct into sun & connect to battery move from time to time to ensure it is facing direct into the sun for MAX charging, very simple.
But It would not be considered a Solar system" installed" in a van
I believe that is what the OP was asking about
One point I should make is, all vans with a heavy use of 12V from the van battery should ensure they have a low voltage battery cut out fitted
This protects the battery from over discharging, which leads to short battery life
PeterQ
oldtrack123 said
11:18 AM Oct 22, 2014
Blue wrote:
this picture will help you visualise how a solar charging unit is set up.. demystify it a bit
as you can see, in this pic they are running the light straight off the solar controller unit..
you do not have to do this, you can run items straight off the battery as long as you run a fuse on the positive side..
inverters will have an internal fuse, usually at the back so that you can just take a cap off, or if its a 12v car inverter with a cigarette lighter plug it'll have a fuse inside the plug..
I run my diesel heater straight off the battery with a fuse in the positive supply power wire...
Hi
The above is no more than a very basic diagram
It lacks essential details for a safe reliable system!
Why bother taking the lights & other 12V loads? from the solar controller load terminals ?
They/ It may just as well be connected to the battery .!
I would hope no one takes that as all that is required
Re"'you do not have to do this, you can run items straight off the battery as long as you run a fuse on the positive side.."
Why do only suggest a fuse in the 12Vt in THAT situation?& not in ALL pos cables connected to the battery??
Also no low voltage cutout for the battery
The correct set up shall have fuses to suit the actual cable rating in ALL positive leads as close as possible to the battery
Failure to do that can lead to fires under heavy cable over loads or short circuits.
Again,I suggest readers take care with any tech info supplied on forums or the internet
While most is posted with good intentions, it may not be correct ,it may not apply to Aus standards .it may leave out crucial points.
Just remember 12V can burn your van down, if it is not done correctly
PeterQ
-- Edited by oldtrack123 on Wednesday 22nd of October 2014 11:41:38 AM
Blue said
06:00 PM Oct 22, 2014
oldtrack123 wrote:
Blue wrote:
this picture will help you visualise how a solar charging unit is set up.. demystify it a bit
as you can see, in this pic they are running the light straight off the solar controller unit..
you do not have to do this, you can run items straight off the battery as long as you run a fuse on the positive side..
inverters will have an internal fuse, usually at the back so that you can just take a cap off, or if its a 12v car inverter with a cigarette lighter plug it'll have a fuse inside the plug..
I run my diesel heater straight off the battery with a fuse in the positive supply power wire...
Hi
The above is no more than a very basic diagram
It lacks essential details for a safe reliable system!
Why bother taking the lights & other 12V loads? from the solar controller load terminals ?
They/ It may just as well be connected to the battery .!
I would hope no one takes that as all that is required
Re"'you do not have to do this, you can run items straight off the battery as long as you run a fuse on the positive side.."
Why do only suggest a fuse in the 12Vt in THAT situation?& not in ALL pos cables connected to the battery??
Also no low voltage cutout for the battery
The correct set up shall have fuses to suit the actual cable rating in ALL positive leads as close as possible to the battery
Failure to do that can lead to fires under heavy cable over loads or short circuits.
Again,I suggest readers take care with any tech info supplied on forums or the internet
While most is posted with good intentions, it may not be correct ,it may not apply to Aus standards .it may leave out crucial points.
Just remember 12V can burn your van down, if it is not done correctly
PeterQ
-- Edited by oldtrack123 on Wednesday 22nd of October 2014 11:41:38 AM
have you ever looked at a solar controllers ports for terminals and how small they are? if so, how many wires do you think you can get in there?
it also depends on the location of the solar controller and battery to the item you want to run...
yes that's what I said.. anything running off the battery should be fused.. what didn't you understand?
im yet to see a solar controller that didn't have low battery voltage cutout on them... even the dirt cheaps ones have them in it.. what kind of junk are you running?
yes... I can see why..
Aus-Kiwi said
10:05 PM Oct 22, 2014
I would use 12v TV etc so no need for inverter.. Unless you have a decent solar system ? Batteries etc . Kiss works best.. Our old converted bus has 3000 watt inverter . It drained batteries big time.. Was much more efficient to start the geny for a few minutes.. Toast and hot water can use the gas .. Besides 12v is way safer.. Just use appropriate cables and fuses ..
-- Edited by Aus-Kiwi on Wednesday 22nd of October 2014 10:06:35 PM
Blue said
10:13 PM Oct 22, 2014
Aus-Kiwi wrote:
I would use 12v TV etc so no need for inverter.. Unless you have a decent solar system ? Batteries etc . Kiss works best.. Our old converted bus has 3000 watt inverter . It drained batteries big time.. Was much more efficient to start the geny for a few minutes.. Toast and hot water can use the gas .. Besides 12v is way safer.. Just use appropriate cables and fuses ..
-- Edited by Aus-Kiwi on Wednesday 22nd of October 2014 10:06:35 PM
yes indeed.... our TV can run 12v (which is 99% of the time) but can also run with a 240v adaptor when in parks if you want to or the 12v lead fails
3000Watt is massive... just too big and will drain your batteries if left on... I've installed a remote switch on our 300w inverter that's under the bed so its only turned on when needed... like running the mrs Sleep Apnoea machine... other than that we use the inverter to Charge/Run computers or charging phones.. that's why we bought a Pure Sine Wave inverter...
out CVan lights run off our 12v batteries as well which was all installed when being built.. Diesel Heater 12v as well
Aus-Kiwi said
10:25 PM Oct 22, 2014
Yes it had big 6-6v 220 ah batteries 700 watt solar .. Too much draw on batteries .. Air con was connected .. Changed wiring so it only run off mains or geny.. The hard part explaining to the one who must be obeyed .. Not to use all the high usage appliances at once.. Well I can do it at home !! When trying to explain !!
-- Edited by Aus-Kiwi on Wednesday 22nd of October 2014 10:29:46 PM
oldtrack123 said
10:42 PM Oct 22, 2014
The above is no more than a very basic diagram
It lacks essential details for a safe reliable system!
Why bother taking the lights & other 12V loads? from the solar controller load terminals ?
They/ It may just as well be connected to the battery .!
I would hope no one takes that as all that is required
Re"'you do not have to do this, you can run items straight off the battery as long as you run a fuse on the positive side.."
Why do only suggest a fuse in the 12Vt in THAT situation?& not in ALL pos cables connected to the battery??
Also no low voltage cutout for the battery
The correct set up shall have fuses to suit the actual cable rating in ALL positive leads as close as possible to the battery
Failure to do that can lead to fires under heavy cable over loads or short circuits.
Again,I suggest readers take care with any tech info supplied on forums or the internet
While most is posted with good intentions, it may not be correct ,it may not apply to Aus standards .it may leave out crucial points.
Just remember 12V can burn your van down, if it is not done correctly
PeterQ
-- Edited by oldtrack123 on Wednesday 22nd of October 2014 11:41:38 AM
[1] have you ever looked at a solar controllers ports for terminals and how small they are? if so, how many wires do you think you can get in there?
[2]it also depends on the location of the solar controller and battery to the item you want to run...
[3]yes that's what I said.. anything running off the battery should be fused.. what didn't you understand?
[4]im yet to see a solar controller that didn't have low battery voltage cutout on them... even the dirt cheaps ones have them in it.. what kind of junk are you running?
yes... I can see why..
Hi
[1]Yes I am well aware of the sizes of solar reg ports /terminals, the size is somewhat dependent t on the solar controllers rating If they are small & cannot accommadate all the load circuits, they are of little use as a low voltage cutout
Just as in the in the pic you supplied,that low voltage cut will be of litle use
[2]WHAT depends on"the location of the solar controller and battery to the item/s you want to run.". ????
[3]just that that pic showed no fuses, so not a good example of how it should be done, Nor did you give any other info on fusing.[sizes, location etc]AND it is not just what is running off the battery that should be fused!!
[4] It has nothing to do with what I am running.
Is that all your experience is based on? what you have run?????
I am aware of many solar controllers which are incapable of handling the possible loads through their"load" terminals & are useless for low voltage protection. unless other steps are taken.and others that simply do not have a low voltage cutout feature
In fact with the set up you have shown many features of better quality solar controllers would be lost or of little value!
Again I will point out the pic shown is a very basic idea of how the solar works
It certainly does not cover the info required to set up even a basic small solar system into a van,especially if you also have or wish to have mains charging & use all the features of the controller
Care should also always be used with ALL enverters
They can kill just a easily as mains 240V
That subject has been well covered in previous threads.
PeterQ
-- Edited by oldtrack123 on Wednesday 22nd of October 2014 11:18:20 PM
Aus-Kiwi said
10:46 PM Oct 22, 2014
Is this going to another ego tech thread ?? Sheesh !!
oldtrack123 said
11:08 PM Oct 22, 2014
Aus-Kiwi wrote:
Is this going to another ego tech thread ?? Sheesh !!
Yes
it appear so, when half ****ed info is posted
Nothing worse , IMHO, than info that could lead the less knowledgeable up the garden path.
But if some are not interested or find it too deep, they do have a simple option
JUST DO NOT READ IT
Peter D & Old bob summed it up & said early in this thread, it is not so simple
Blue also seems to have a problem even knowing what he sells
Read this & there is more ,you will also see where the pic came from
"WM SOLAR CHARGE CONTROLLER
PWM solar charge controller PWM10-60: Compared with normal solar charge controller, this MPPT controller could increase efficiency by 10%-30%.
. This controller can charge and discharge at the same time.
. This PWM controller has perfect SOC function, control charge current, and supply power to the loads.
-
-- Edited by oldtrack123 on Thursday 23rd of October 2014 12:33:38 AM
Blue said
07:26 AM Oct 23, 2014
Aus-Kiwi wrote:
Is this going to another ego tech thread ?? Sheesh !!
yes... oldcoot goes from forum to forum stalking people trying to ONE UP everyone
I think its time for the administrators to get rid of these stalkers who seem to be hell bent on being rude and aggressive...
wasn_me said
07:31 AM Oct 23, 2014
oldtrack123 wrote:
"WM SOLAR CHARGE CONTROLLER
PWM solar charge controller PWM10-60: Compared with normal solar charge controller, this MPPT controller could increase efficiency by 10%-30%.
. This controller can charge and discharge at the same time.
. This PWM controller has perfect SOC function, control charge current, and supply power to the loads.
-
-- Edited by oldtrack123 on Thursday 23rd of October 2014 12:33:38 AM
This will only happen if all charge to the battery is through the controller, & all load from the battery is drawn from the controller. SOC is a mathematical calculation, not a direct reading from the battery.
Cheers Pete
oldbobsbus said
07:42 AM Oct 23, 2014
Blue wrote:
Aus-Kiwi wrote:
Is this going to another ego tech thread ?? Sheesh !!
yes... oldcoot goes from forum to forum stalking people trying to ONE UP everyone
I think its time for the administrators to get rid of these stalkers who seem to be hell bent on being rude and aggressive...
Personal attacks are also frowned upon Blue..
Webmaster said
11:06 AM Oct 23, 2014
Hi All, Just a reminder to keep posts respectful and friendly. We would like to keep our forum a positive place, and, although we understand that people may have different points of view, we do not allow personal attacks. Also, another reminder that although we do have many knowledgeable members offering technical advice, people should consult qualified technicians to ensure that their rigs comply with all safety regulations.
oldtrack123 said
01:36 PM Oct 23, 2014
wasn_me wrote:
is controller can charge and discharge at the same time.
. This PWM controller has perfect SOC function, control charge current, and supply power to the loads.
-
-- Edited by oldtrack123 on Thursday 23rd of October 2014 12:33:38 AM
This will only happen if all charge to the battery is through the controller, & all load from the battery is drawn from the controller. SOC is a mathematical calculation, not a direct reading from the battery.
Cheers Pete
HI Pete
Yes, that is one of the point & why the circuit is wrong
We are told the terminal ports are to small to take all the load cables.
That means the SOC function is useless in many cases!
IT also means the low voltage cut out is useless in similar situations
But we also have the problem as to WHAT TYPE of reg it realy is
Is it a PWM ,OR a MPPT?
Surely that is simply enough to get right
IF the details in the advertising are not correct ,that should leave doubts in people's minds about other info from that source
Again I will repeat the Message regarding Ebay, in particular regarding electricals
Many are $2 cos with no real experience or knowledge of the products they sell .
They fold up quickly if something goes wrong leaving the buyer holding the problem
It is happenning every day.
I AM NOT SAYING that this is or could be the case with this particular seller.
I would suggest to always deal with well established sellers or seek info [other than the satifaction rating attached to ANY sellers site] from those who have actualy dealt with the seller over a reasonable period.
A simple way to do this is ask on any forum & request those who have had dealings, GOOD or BAD, to pm their experiences
Also be carefull if the price & the product looks too good to be true!!
If you follow recall posts you will see how often THAT is true.
PeterQ
MaryJane said
09:42 PM Oct 24, 2014
oldtrack123 wrote:
HI Mary Jane
Yes, if someone wants just a portable panel [ low capacity,] that is OK
Just go out & buy a portable unit from any REPUTABLE seller
Place facing direct into sun & connect to battery move from time to time to ensure it is facing direct into the sun for MAX charging, very simple.
But It would not be considered a Solar system" installed" in a van
I believe that is what the OP was asking about
One point I should make is, all vans with a heavy use of 12V from the van battery should ensure they have a low voltage battery cut out fitted
This protects the battery from over discharging, which leads to short battery life
PeterQ
I will correct you. It clearly states "those that do not understand solar" etc. I didn't/don't understand it. But I'm using it and it works.
oldtrack123 said
10:30 PM Oct 24, 2014
HI Mary Jane
Of course YOUR system works
It is a portable unit
They do the simple job of just charging the battery
[Quote}"for folding 120w). Read the instructions, plugged the panels in and within hours my battery (100ah) is topped up. I charge
iphone and ipad, watch tv and listen to music, lights, diesel heater, water pump etc."[end quote]
Your panel, at the best, will put in around you 25<30Ahrs per day in GOOD BRIGHT SUN
Not even enough to run a single compresor fridge[ Engel or Waeco]day after day.
But If it suits your need that is OK
I do not think that is what the OP was asking about.
That is totaly different to a good permanent system with multiple panels[more power] designed to suit the user's total requirements, with long term off mains camping.
Even if one cannot go the full hog, they still should consider their future requirements, so that they do not throw money down the drain,due to incompatable panels, regulator undersized, etc. when they decide to encrease charge capacity.
Your's does not have the features, with battery monitoring, low voltage cut out, SOC indication, etc
Do you have a low voltage cutout installed??
PeterQ
-- Edited by oldtrack123 on Friday 24th of October 2014 11:24:05 PM
Hi all doing a newsletter for our caravan club in North Queensland. Would like to do a basic article for those (like me) who does not understand solar and caravans. So your input would be greatly appreciated.
What do you need to start?
How is easy is it to set up?
Can this be done by people like me who know nothing
and what will work when all set up.
Thanking you in advance
Barb
Welcometo the Forum Barb..
You could start by using the Search button above as there would be 100 threads on the subject..
I am sure you would find enough info to fill a book or 2.
You would also do well to get someone with lots of knowledge on the subject to write the article for you.. that way you aren't giving others misinformation because of your lack of knowledge on the subject.
-- Edited by oldbobsbus on Monday 20th of October 2014 02:36:34 PM
I did look on the Search button and started reading some of things that have been written but thought because this is a techie site you were all talking above my head.
It is not as easy or simple as l thought to have solar with the caravan
Barb
And for that exact reason you shouln't be the one writing the article..
Collyn Rivers has written extensively on the subject but again he also talks in technical terms..
Maybe someone else here would be prepared to write you a short article explaining Solar in layman's terms, I'm not really much good at putting things down on paper.
here's a basic package that you need to start with
http://www.ebay.com.au/itm/120-watt-Flexible-Caravan-Solar-Charging-System-with-300watt-Inverter-and-/221581121738?pt=AU_Solar&hash=item33974398ca
One Solar Panel
One Solar Regulator
One Battery - 100ah or Higher
One 12v to 240V inverter to run items off your battery in your van
such as
TV, DVD, Computer, Diesel Heater, Sleep Apnoea Machine, charging phones and ipods etc etc etc
You will note that the 300Watt inverter is "Pure Sine Wave" ... don't get one that isn't or you risk blowing up your products..
this is all l need to give to interested people to start them off and what they can expect their solar to run
It is a bit like a mobile phone you start with the basic then add all the apps to get more out of your phone.
HI Barbara
I would suggest you get advice from someone who is not a Ebay seller pushing their line
Especialy when they do not realy know much about solar!
I do not think simply indicating a stock kit is the answer to your question
Also, an inverter should be very low on the list due to the potential dangers of using multiple 240V Class1 appliances [have 3pin plugs]at the same time.
Best & safest to stick to 12V wherever possible & more efficient use of available power.
It is rather difficult to give All the needed details on a forum such as this.
AS each case will be dependent on many factors such as;
Equipment rating [WATTs]
Expected hrs of use of each per day
Period of "off" mains use [no mains charging]
Possible alternative charging for long spells of bad weather for solar charging
But the basic set up simply consists of:
Solar panels [size dependent on above factors]
Solar regulator, depending on panel arrangement[ 12v or 24V] size req, & available roof space, a simple PWM reg or a MPPT reg
Deep cycle battery, size dependent on daily use requirements, no of days that it may be required to supply without recharging.
but i would suggest that your readers get some of Collyn Rivers Books on the subject.
They are quite comprehensive & are not overly technical[well not to me
l]
Other than that refer them to this or other RV/ Caravan style forums where they can ask questions specific to their reqs & will get plenty of advice, but may have to sort the wheat from the chaff.
PeterQ
-- Edited by oldtrack123 on Monday 20th of October 2014 11:37:21 PM
that is exactly 100% right barb...
there's a lot of handy folk out there that could easily get started with solar charging systems if all the "mystery" and "naysayers" get taken out of it..
in our first van all we had was ONE battery which only charged when plugged into 240v.. so you either had to go to a park or carry a noisy generator.. we could stay a night or two free camping on this one battery which powered our LED lights and 12v TV and booster..
in our next caravan we had
one solar panel
one solar regulator/charger
one 100ah battery
again, this ran our van LED lights, TV & areal booster, and there's also a 12v cigarette socket
to this we upgraded to a bigger panel from 90 to 120 watts
added another 100ah battery
added a 300watt Pure Sine Wave inverter to run the mrs Sleep Apnoea machine and run computers
we also run a Diesel Heater which runs on 12 Volts
so as you can see... we started off with the very Basics to get going and to understand our power usage and what we could actually run on our batteries..
this is the best way... just get the basics and get going.. a lot of handy Nomads and Caravaners have already installed extra batteries into their cars to run portable fridges etc and if they can do this then they can install their own Solar Charging System..
btw... most of my upgraded equipment has been purchased off Ebay and as long as you buy of an Ebayer with a High review score you'll be fine...
everthing I've purchased off ebay all works 100% and I have saved 1000s of dollars
Your information has been great information to pass on to fellow caravanners who are new to solar
Barb
Barb
For some guidance, check out these guys website - they have had simple articles on Solar..
Do a google search for Aussie Batteries & Solar The look at past articles..
Glen
thanks blue easy explained and easy to follow
suenray
this picture will help you visualise how a solar charging unit is set up.. demystify it a bit
as you can see, in this pic they are running the light straight off the solar controller unit..
you do not have to do this, you can run items straight off the battery as long as you run a fuse on the positive side..
inverters will have an internal fuse, usually at the back so that you can just take a cap off, or if its a 12v car inverter with a cigarette lighter plug it'll have a fuse inside the plug..
I run my diesel heater straight off the battery with a fuse in the positive supply power wire...
it couldn't have been simpler. I like simple. I've no idea how it works, but it works and that's all I care about
cheers,
MJ
HI Mary Jane
Yes, if someone wants just a portable panel [ low capacity,] that is OK
Just go out & buy a portable unit from any REPUTABLE seller
Place facing direct into sun & connect to battery move from time to time to ensure it is facing direct into the sun for MAX charging, very simple.
But It would not be considered a Solar system" installed" in a van
I believe that is what the OP was asking about
One point I should make is, all vans with a heavy use of 12V from the van battery should ensure they have a low voltage battery cut out fitted
This protects the battery from over discharging, which leads to short battery life
PeterQ
Hi
The above is no more than a very basic diagram
It lacks essential details for a safe reliable system!
Why bother taking the lights & other 12V loads? from the solar controller load terminals ?
They/ It may just as well be connected to the battery .!
I would hope no one takes that as all that is required
Re"'you do not have to do this, you can run items straight off the battery as long as you run a fuse on the positive side.."
Why do only suggest a fuse in the 12Vt in THAT situation?& not in ALL pos cables connected to the battery??
Also no low voltage cutout for the battery
The correct set up shall have fuses to suit the actual cable rating in ALL positive leads as close as possible to the battery
Failure to do that can lead to fires under heavy cable over loads or short circuits.
Again,I suggest readers take care with any tech info supplied on forums or the internet
While most is posted with good intentions, it may not be correct ,it may not apply to Aus standards .it may leave out crucial points.
Just remember 12V can burn your van down, if it is not done correctly
PeterQ
-- Edited by oldtrack123 on Wednesday 22nd of October 2014 11:41:38 AM
have you ever looked at a solar controllers ports for terminals and how small they are? if so, how many wires do you think you can get in there?
it also depends on the location of the solar controller and battery to the item you want to run...
yes that's what I said.. anything running off the battery should be fused.. what didn't you understand?
im yet to see a solar controller that didn't have low battery voltage cutout on them... even the dirt cheaps ones have them in it.. what kind of junk are you running?
yes... I can see why..
I would use 12v TV etc so no need for inverter.. Unless you have a decent solar system ? Batteries etc . Kiss works best..
Our old converted bus has 3000 watt inverter . It drained batteries big time.. Was much more efficient to start the geny for a few minutes.. Toast and hot water can use the gas .. Besides 12v is way safer.. Just use appropriate cables and fuses ..
-- Edited by Aus-Kiwi on Wednesday 22nd of October 2014 10:06:35 PM
yes indeed.... our TV can run 12v (which is 99% of the time) but can also run with a 240v adaptor when in parks if you want to or the 12v lead fails
3000Watt is massive... just too big and will drain your batteries if left on... I've installed a remote switch on our 300w inverter that's under the bed so its only turned on when needed... like running the mrs Sleep Apnoea machine... other than that we use the inverter to Charge/Run computers or charging phones.. that's why we bought a Pure Sine Wave inverter...
out CVan lights run off our 12v batteries as well which was all installed when being built.. Diesel Heater 12v as well
Yes it had big 6-6v 220 ah batteries 700 watt solar .. Too much draw on batteries ..
Air con was connected .. Changed wiring so it only run off mains or geny..
The hard part explaining to the one who must be obeyed .. Not to use all the high usage appliances at once..
Well I can do it at home !! When trying to explain !!
-- Edited by Aus-Kiwi on Wednesday 22nd of October 2014 10:29:46 PM
Hi
[1]Yes I am well aware of the sizes of solar reg ports /terminals, the size is somewhat dependent t on the solar controllers rating
If they are small & cannot accommadate all the load circuits, they are of little use as a low voltage cutout
Just as in the in the pic you supplied,that low voltage cut will be of litle use
[2]WHAT depends on"the location of the solar controller and battery to the item/s you want to run.". ????
[3]just that that pic showed no fuses, so not a good example of how it should be done, Nor did you give any other info on fusing.[sizes, location etc]AND it is not just what is running off the battery that should be fused!!
[4] It has nothing to do with what I am running.
Is that all your experience is based on? what you have run?????
I am aware of many solar controllers which are incapable of handling the possible loads through their"load" terminals & are useless for low voltage protection. unless other steps are taken.and others that simply do not have a low voltage cutout feature
In fact with the set up you have shown many features of better quality solar controllers would be lost or of little value!
Again I will point out the pic shown is a very basic idea of how the solar works
It certainly does not cover the info required to set up even a basic small solar system into a van,especially if you also have or wish to have mains charging & use all the features of the controller
Care should also always be used with ALL enverters
They can kill just a easily as mains 240V
That subject has been well covered in previous threads.
PeterQ
-- Edited by oldtrack123 on Wednesday 22nd of October 2014 11:18:20 PM
Yes
it appear so, when half ****ed info is posted
Nothing worse , IMHO, than info that could lead the less knowledgeable up the garden path.
But if some are not interested or find it too deep, they do have a simple option
JUST DO NOT READ IT
Peter D & Old bob summed it up & said early in this thread, it is not so simple
Blue also seems to have a problem even knowing what he sells
http://www.ebay.com.au/itm/120-watt-Flexible-Caravan-Solar-Charging-System-with-300watt-Inverter-and-/221581121738
Read this & there is more ,you will also see where the pic came from
"WM SOLAR CHARGE CONTROLLER
PWM solar charge controller PWM10-60: Compared with normal solar charge controller, this MPPT controller could increase efficiency by 10%-30%.
. This controller can charge and discharge at the same time.
. This PWM controller has perfect SOC function, control charge current, and supply power to the loads.
-
-- Edited by oldtrack123 on Thursday 23rd of October 2014 12:33:38 AM
yes... oldcoot goes from forum to forum stalking people trying to ONE UP everyone
I think its time for the administrators to get rid of these stalkers who seem to be hell bent on being rude and aggressive...
This will only happen if all charge to the battery is through the controller, & all load from the battery is drawn from the controller. SOC is a mathematical calculation, not a direct reading from the battery.
Cheers Pete
Personal attacks are also frowned upon Blue..
Hi All,
Just a reminder to keep posts respectful and friendly. We would like to keep our forum a positive place, and, although we understand that people may have different points of view, we do not allow personal attacks.
Also, another reminder that although we do have many knowledgeable members offering technical advice, people should consult qualified technicians to ensure that their rigs comply with all safety regulations.
HI Pete
Yes, that is one of the point & why the circuit is wrong
We are told the terminal ports are to small to take all the load cables.
That means the SOC function is useless in many cases!
IT also means the low voltage cut out is useless in similar situations
But we also have the problem as to WHAT TYPE of reg it realy is
Is it a PWM ,OR a MPPT?
Surely that is simply enough to get right
IF the details in the advertising are not correct ,that should leave doubts in people's minds about other info from that source
Again I will repeat the Message regarding Ebay, in particular regarding electricals
Many are $2 cos with no real experience or knowledge of the products they sell .
They fold up quickly if something goes wrong leaving the buyer holding the problem
It is happenning every day.
I AM NOT SAYING that this is or could be the case with this particular seller.
I would suggest to always deal with well established sellers or seek info [other than the satifaction rating attached to ANY sellers site] from those who have actualy dealt with the seller over a reasonable period.
A simple way to do this is ask on any forum & request those who have had dealings, GOOD or BAD, to pm their experiences
Also be carefull if the price & the product looks too good to be true!!
If you follow recall posts you will see how often THAT is true.
PeterQ
I will correct you. It clearly states "those that do not understand solar" etc. I didn't/don't understand it. But I'm using it and it works.
HI Mary Jane
Of course YOUR system works
It is a portable unit
They do the simple job of just charging the battery
[Quote}"for folding 120w). Read the instructions, plugged the panels in and within hours my battery (100ah) is topped up. I charge
iphone and ipad, watch tv and listen to music, lights, diesel heater, water pump etc."[end quote]
Your panel, at the best, will put in around you 25<30Ahrs per day in GOOD BRIGHT SUN
Not even enough to run a single compresor fridge[ Engel or Waeco]day after day.
But If it suits your need that is OK
I do not think that is what the OP was asking about.
That is totaly different to a good permanent system with multiple panels[more power] designed to suit the user's total requirements, with long term off mains camping.
Even if one cannot go the full hog, they still should consider their future requirements, so that they do not throw money down the drain,due to incompatable panels, regulator undersized, etc. when they decide to encrease charge capacity.
Your's does not have the features, with battery monitoring, low voltage cut out, SOC indication, etc
Do you have a low voltage cutout installed??
PeterQ
-- Edited by oldtrack123 on Friday 24th of October 2014 11:24:05 PM