Inverter

mischief · Veteran Member

Inverter

Peter_n_Margaret · Guru

Why?
Cheers,
Peter

PeterD · Guru

I do not understand what you are up to. Please reword your question, preferably not using telegram type wording.

mischief · Veteran Member

I put in another system ,separate to existing, just to run 240v for items not exceeding 2000w .basically was not interested in disturbing existing setup. Am reluctant to use genset except in extreme weather. Big plus two in crowded camps. No noise.

Peter_n_Margaret · Guru

I see no advantage in two small systems compared to one larger one.
Cheers,
Peter

mischief · Veteran Member

Why so negative,, one system is 800w the other is 700w that's not small. It was more practicable to add another system than to rehash it ,including upgrading wiring. Maybe not conventional but has some advantages I added on without disrupting what worked,

PeterD · Guru

Do you have another set of batteries on the solar array or are you expecting to be able to run your inverter from the solar panels? If it is the second one, I don't think you will be very successful.

Peter_n_Margaret · Guru

mischief wrote:
Your thoughts. .

You asked. But you did not want to hear them?

Cheers,

Peter

Esperian · Senior Member

I have installed 900W solar on my motor-home roof, feeding power to 440 Amph battery bank onboard. That feeds power to my 3000W inverter, which feeds 240V to all my appliances. Normally I use one 240V 129L capacity fridge from Aldi, and just some 4 month ago I added a 75L "Taurus" fridge/freezer, used permanently as a freezer after setting its temperature to 5 -C deg. The freezer is 12/24VAC and 240VDC but I use it only on 240 mode using using the 240VAC adapter. I run on this system my laptop, and fan when is hot, all day, and sometime even up to 10-11PM at night, except of fun in the night as is not needed at that time. So far I never run out of power.

To make sure all will be OK, I bought two 300W extra solar panels. These are the new type Solar blanket type. After folding they use very little space and work perfect. I never needed to add more than only one of those, usually when there were several cloudy or part cloudy days, with no much sun. I have a generator with a 20L can of fuel for back-up, and there was only one time I have had to use it to pop-up my battery bank after few rainy day in the row. But since then, I never had to use it again. But I don't like to use any fuel for power, if i can help it, so I bought over internet, (at Alibaba) one 280Amph, lifepo4 type lithium battery-set (4cell/12V each), which I put together myself out of those 4 cells, and I set it into the battery box, bought for 65 AUD. This I'll use most of the time as a spare, portable emergency set, loaded most of the time by the 2 solar blankets, or any other source of 240W available. In such case, using for the lithium battery charger. So far, all this works for me just perfect. And. The battery bank I use is 4*110Amph Lead Crystal batteries.

Esperian · Senior Member

I have installed 900W solar on my motor-home roof, feeding power to 440 Amph battery bank onboard. That feeds power to my 3000W inverter, which feeds 240V to all my appliances. Normally I use one 240V 129L capacity fridge from Aldi, and just some 4 month ago I added a 75L "Taurus" fridge/freezer, used permanently as a freezer after setting its temperature to 5 -C deg. The freezer is 12/24VAC and 240VDC but I use it only on 240 mode using using the 240VAC adapter. I run on this system my laptop, and fan when is hot, all day, and sometime even up to 10-11PM at night, except of fun in the night as is not needed at that time. So far I never run out of power.

To make sure all will be OK, I bought two 300W extra solar panels. These are the new type Solar blanket type. After folding they use very little space and work perfect. I never needed to add more than only one of those, usually when there were several cloudy or part cloudy days, with no much sun. I have a generator with a 20L can of fuel for back-up, and there was only one time I have had to use it to pop-up my battery bank after few rainy day in the row. But since then, I never had to use it again. But I don't like to use any fuel for power, if i can help it, so I bought over internet, (at Alibaba) one 280Amph, lifepo4 type lithium battery-set (4cell/12V each), which I put together myself out of those 4 cells, and I set it into the battery box, bought for 65 AUD. This I'll use most of the time as a spare, portable emergency set, loaded most of the time by the 2 solar blankets, or any other source of 240W available. In such case, using for the lithium battery charger. So far, all this works for me just perfect. And. The battery bank I use is 4*110Amph Lead Crystal batteries.

mischief · Veteran Member

Yes Peter, the 240v set up is to a 200ah lithium. As I said b/4 my demand on this system is only about 2000w. Mostly will be used for short periods.

Dick0 · Guru

Hi mischief,

Not wanting to sound negative in any way but your setup does not seem logical and I have never heard of such a split array. It obviously sounds right to you and that is ok.

I would have consolidated the solar array and input, used one appropriate and reputable brand MPPT solar controller and one bank of batteries.

That to me appears to be the most efficient system.

Being my opinion, as you have requested.

Perhaps you could elaborate in more detail exactly how many panels are in the total array and how they are currently set up, the type of solar controller(s) you are using and the total number of batteries in the setup.

kgarnett · Senior Member

Nothing wrong with some redundancy!

Peter_n_Margaret · Guru

You can get the redundancy and a better total system by having 2 controllers feeding one battery bank.
Cheers,
Peter