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Post Info TOPIC: Maximum power which can be drawn from the extension lead.
Aus-Kiwi


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RE: Maximum power which can be drawn from the extension lead.
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Wasnt anything to to with CB etc its the maths behind working it out . That WILL trip your breaker or overload your circuit . Whatever the breaker is fitted ? Even if its the older 10amp . Dont forget an electric water heater if fitted ? You want to be 5 % under max load for any long term start up current etc . .

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Jaahn


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Hi smile

Well that listing of Australian acceptable limits for high and low voltages is eye-opening. I sometimes had occasion to check voltages in other countries but I see now they were mostly not outside these max/min limits biggrin. I always checked it first if I wanted to do some stick welding. 

However on one exceptional occasion when the governor lost control of a hydo generator the town in PNG had a surge to well into the 300Volts before it tripped out completely. Hmmm a lot of expensive damage done to things that were switched on at the time !! Worse perhaps was the increase in the frequency that accompanied it, up 50% perhaps. hmm

But our system is usually much better regulated than the absolute limits imply. But at the end of a remote supply line it might be another story.no What about SWER in remote areas ???

Jaahn

 



-- Edited by Jaahn on Tuesday 4th of December 2018 11:06:45 AM

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Aus-Kiwi


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Voltage us regulated at tap on tranny . Yes did voltage survey in North Sydney. Varies from PT to open point . They ( try) set voltage in the middle . Also change connections to another phase on single phase .

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Peter_n_Margaret


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Jaahn wrote:

But our system is usually much better regulated than the absolute limits imply.

 

 "usually" is the right word.

A few years ago our 'fridge was making funny noises. I checked the incoming voltage to the house and it was 190V.

I called the power supply company and they did not believe me, but threatened with paying for a new fridge, they came out and investigated. They swapped our supply to another phase and it was then OK for us. No idea about all the other customers using that phase though.

Cheers,

Peter



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The Travelling Dillberries


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Hot Water wrote:
PeterD wrote:

No, 15 A breakers were available. If they are no longer available I am not sure if the number of vans with 16 A ones would be in the majority yet.

 so as per the aussie regs is the van controlled by just 1 x 15 or 16A breaker on the main incoming fixed wiring so that the extension cord is protected in worst case overload? 



-- Edited by Hot Water on Monday 3rd of December 2018 07:54:48 PM

So to answer your questions Hot Water ; doesn't look like anyone else is going to...

YES. just turn your 240 CB off and make sure everything in and outside of the van is dead.

 and YES, if that's the case, you can use it as your 240V main switch.

 

 



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Hot Water


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The Travelling Dillberries wrote:
Hot Water wrote:
PeterD wrote:

No, 15 A breakers were available. If they are no longer available I am not sure if the number of vans with 16 A ones would be in the majority yet.

 so as per the aussie regs is the van controlled by just 1 x 15 or 16A breaker on the main incoming fixed wiring so that the extension cord is protected in worst case overload? 



-- Edited by Hot Water on Monday 3rd of December 2018 07:54:48 PM

So to answer your questions Hot Water ; doesn't look like anyone else is going to...

YES. just turn your 240 CB off and make sure everything in and outside of the van is dead.

 and YES, if that's the case, you can use it as your 240V main switch.

 

thank you Travelling Dillberries, what value CB can i expect to see as the main input line supplying most vans? 10A, 15A, 16A? 

 

 



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The Travelling Dillberries


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Hot Water wrote:
The Travelling Dillberries wrote:
Hot Water wrote:
PeterD wrote:

No, 15 A breakers were available. If they are no longer available I am not sure if the number of vans with 16 A ones would be in the majority yet.

 so as per the aussie regs is the van controlled by just 1 x 15 or 16A breaker on the main incoming fixed wiring so that the extension cord is protected in worst case overload? 



-- Edited by Hot Water on Monday 3rd of December 2018 07:54:48 PM

So to answer your questions Hot Water ; doesn't look like anyone else is going to...

YES. just turn your 240 CB off and make sure everything in and outside of the van is dead.

 and YES, if that's the case, you can use it as your 240V main switch.

 

thank you Travelling Dillberries, what value CB can i expect to see as the main input line supplying most vans? 10A, 15A, 16A? 

 

 

 You would expect to find a 15 or 16Amp . (as previously stated you may find 10A or even 20Amp protecting the C Park socket.)

Should also mention the one in the van (and the one in the CP ) should be 30mA safety CB's, you need to check its operation monthly or every time you are getting ready for a trip. Also check the C Park one trips when you test it, prior to plugging in your lead.



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rockylizard


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Gday...

confuse do people actually check the van park circuit breaker by testing it before plugging in the lead when we get to our site?

Maybe I am way out of step 'safety-wise' ... but I have never done that .. and don't think I know anyone else who has. confuse

Cheers - John



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Aus-Kiwi


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I check the RCD . On CPs power board . What I have bought lately is a surge protector . Too many voltage variations in some camping grounds

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Jaahn


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rockylizard wrote:

Gday...

confuse do people actually check the van park circuit breaker by testing it before plugging in the lead when we get to our site?

Maybe I am way out of step 'safety-wise' ... but I have never done that .. and don't think I know anyone else who has. confuse

Cheers - John

 Hi John smile

Yes I do ! I do it at home with my portable leads with one fitted also. Takes a couple of seconds and "exercises' the device which will help to keep it working as well as checking it does workbiggrin

Jaahn 



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