Electrickery query

[bigtwin]

So you are missing out the RCD and using a 2.5mm cable with a 13 amp plug on each end. You must be mad. The whole idea of the RCD is to protect the inhabitants of the MH when using 240v electricity. What you should do is connect the house electrics to the proper 240v inlet on the MH. You should also remember that if you use a generator you will be powering the whole MH including fridge and battery charger. I would have thought that the RCD in the house is not happy finding another RCD connected the wrong way round which is what you are doing. You are supplying 240v to the output of the RCD. Just do it correctly before you KILL SOMEONE and it you don't know what you are doing LEAVE IT ALONE ...

Notwithstanding the fact that his intent is inappropriate, you are missing the point of his approach. He was intending to to feed his generator supply to the input of the distribution box, thereby trying to retain the protection afforded by the RCDs to the onboard 240V supplies.

Ian

 

[pappajohn]

Take a short 2.5mmsq lead, put a plug suitable for the generator on one end and a hookup socket on the other end (the same as your hookup lead)
Then plug directly into your hookup point.

If you then want an additional socket in the garage wire it from an existing socket and it will be protected but DON'T use it for the purpose you were trying to, it won't be protected by the breaker.
Sounds contradictory but that's how it is.

 

[pappajohn]

Gennie is to be fixed in garage, exhaust through floor and garage vented, maybe auto start/stop too.

You'll regret that from day one.
The garage will act as a big sound box and amplify the already noisy generator.
The garage will need two or three inches of quality sound insulation just to make it bearable.

My RV had the genny mounted 12" below the 2" thick floor....it was more than audible.

 

[138go]

Notwithstanding the fact that his intent is inappropriate, you are missing the point of his approach. He was intending to to feed his generator supply to the input of the distribution box, thereby trying to retain the protection afforded by the RCDs to the onboard 240V supplies.

Ian

Hmmmmm see where you are now. Got confused with switched sockets etc. Wiring it that way will result in a big bang the day you plug in a 240v EHU with the generator plugged in but not working. Unless you have a switch in there somewhere that switches from one feed to the other.

 

[captainscarlett]

Appreciate that, have had the Gennie running in garage, was quite surprised how tolerable it was. It was intended to run for a few minutes at a time for appliances that are a bit juice hungry, was never intended for prolonged use.
It's not a large generator, Hyundai 2kw silent ish.
Anyway its clear i will have to re-think my installation, thanks again for all the input.

The geezer driving the Humming Hobby

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[peterc10]

Please will you let us all know where and when you will be using this new system, so that I can stay well away.

Usually it is the noise gennies make that I want to avoid, but with you it is the flames ......

 

[captainscarlett]

I’m behind you

 

[Jaws]

Take a short 2.5mmsq lead, put a plug suitable for the generator on one end and a hookup socket on the other end (the same as your hookup lead)
Then plug directly into your hookup point.

If you then want an additional socket in the garage wire it from an existing socket and it will be protected but DON'T use it for the purpose you were trying to, it won't be protected by the breaker.
Sounds contradictory but that's how it is.

That will not do what the OP wants or needs John.
The genny is going to live in the garage.
About the only 100% ( weeellllll 95% at least ) safe way that springs to mind is to do as you have already done, but instead of a socket in the garage use a 13a terminal box and hard wire the genny ..

 

[EuroTrotters]

If you want to add a socket, link to another with a junction box or go via the MCB on the consumer unit of the Motorhome.

If you want to add a generator feed. You will can simply plug that in to the EHU on the outside of the motorhome in stead of shore power.

Alternatively, you can get an automated or manual 2/3 position input switch to choose between power input options.

 

[tonyidle]

I think the simple and safe answer has to be - don't do it. Any arrangement that can under certain circumstances result in a plug with live pins that is going to be used by someone with limited knowledge of mains wiring and its attendant dangers is unacceptable. There are two options: hand the job over to a competent electrician who will need to install appropriate and foolproof changeover arrangements; or simply plug the genny output into the existing EHU point on the outside of the van.

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