wasn_me wrote:

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I have downsized to a 1999 poptop, which I intend to travel in next year. I am assuming the attached photo is of circuit breakers only, as there is no test switch. If this is so can a earth leakage protection device be fitted to the existing set up. 

Would a van of this vintage have dual pole switching on the power points. Is there a simple way to test if it has dual pole switches.

I won't use 240v much but I want the best protection.

Cheers Pete

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HI Pete

Yes, that vintage should have double pole switching on all points& lights

If you ever expect to use a generator ,now would be a good time to fit a RVD[not a RCD]

The units are smaller & will replace the existing CBs[fit into the same area ]

I suggest the" RVD "because unlike a RCD, it will give protection with a generator or inverter plugged into the supply socket

PeterQ

wasn_me wrote:

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Thanks for the reply Peter.

What is the difference between a RCD & RVD. My understanding is an RCD measures current in & current out, & trips if there's a difference, (ie current running through me to earth)

Does an RCD get attached to the existing circuit breakers or does a whole new unit have to be fitted.

Cheers Pete

 

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 Hi

A RCD does not give any protection from shocks to earth or vehicle metal frame etc when using agenerator or inverter plugged into the van power inlet socket.

RVDs do.

NO,it is supplied as a combo RVD/RCD Overload cb

& replaces the existing unit 

PeterQ

Phil C wrote:

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PeterQ, Thats a damn fine point, it means potentialy an electrocution could take place, on a generator, with no protection from the RCD. I wonder if a switchable MEN link in the caravan circuit may be appropriate in this case.

I have an RCD tester and a generator, when the weather clears up a bit and I get some petrol for the genny I will test that and let you know the result, I have had no dealings with RVDs so Im not even sure how to identify them.

I will do the test and post the result for you.

Cheers

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HI Phil

The normal RCD will work IF the generator/inverter is permanently wired in with the correct change over  switching

Switching then provides:

[1] full isolation of both LINES of van  from the mains supply, IF  van is also left connected to the mains & connects BOTH lines of the generator/inverter to the van wiring

  An EN link is established within the van when the switch is in generator/inverter position

 Creating  a switched  E-N link just on it's own is not acceptable[ in the van]

Errors could occur with it being left" on "[bonded ]when conected to MAINS supply 

Australian Standards do not accept such a situation 

If an EN is made at the generator ,the generator SHALL be fitted with a permanent RCD.

IS that an old generator ?

Do you have an old inverter? 

You may find both or either will indicate an internal EN

Due to  several deaths & many accidents such are now banned from sale

But, as you would understand even a isolated power supply can deveope a line to "earth" fault anywhere in the system

IT is then a non RCD protected EN system, just as deadly as non RCD protected MAINS supply 

RVDs are relatively new on the market , development only started about 6years, but are now being widely used in situations were inverters or generators are required

They comprise the actual RVD unit coupled with a RCD /RCBO[ must specify current rating]

 Google RVDs, or  Safelec technology , .

Some state gov depts have taken to them

One state, at least, has had them fitted to ambulances 

PeterQ