Consumer unit rcb+fuse

Dorwyn

Dorwyn

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I've just replaced the habitation battery which is now good but the mains hook up does not work. The rcd tripped when mains reconnected, don't know why, didn't go near the mains system. Reset the rcd but still mains does not work. There does not seem to be a separate fuse unit that I can see (it's difficult to see the unit), but it is quite a simple unit with just one circuit. Should there be a fuse or is it just the trip mechanism?
 
Where is the feed comming from, it has probably tripped the supply
 
If it hasn't tripped the hookup post or house supply it may be the breaker.
Some need pushing all the way OFF from the trip position then pushing ON.
 
MichaelT said:
May be a dodgy lead
Click to expand...
Might be a dodgy electrician ...

Seriously - hope you sort it asap !

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Have you shorted out the charger? Only real logical connection between the DC battery and the AC side the AC - DC converter!
 
tacr2man said:
Did you fit the hab battery in the right way round ie neg to earth . ?
Click to expand...
Yes, that's all working just fine.
MichaelT said:
May be a dodgy lead
Click to expand...
I've got another lead so I can check that when I get home. But it was working fine until after the battery change. I've checked the fuse on the lead (it's connected to the house via an outside 3 pin box + converter lead}.
pappajohn said:
If it hasn't tripped the hookup post or house supply it may be the breaker.
Some need pushing all the way OFF from the trip position then pushing ON.
Click to expand...
It's just on/off. Will double check this though
eddievanbitz said:
Have you shorted out the charger? Only real logical connection between the DC battery and the AC side the AC - DC converter!
Click to expand...
That's a possibility I suppose, but I can't see how, the battery was an exact replacement, I kept the positive isolated from the earth side while disconnected, reconnected the positive first, then reconnected the neg. I've no idea where the charger is, I suppose it must be in the power box under the seat. I'll double check the fuses but am not sure that there is a fuse on the power box. Trouble is, the owners manual is just a generic thing, not specific to my van and the power panel shown is not the one on my van.
 
There should be a fuse between the battery and the charger. You could pull that out to isolate the charger from the battery.

Maybe the 'rcd' you mention is a combined rcd and mcb, in other words an rcbo. They are often fitted on MHs nowadays. If so, you don't know if the fault is an overcurrent (eg. a short) or earth leakage (eg water in the plug). It may be just an unlikely coincidence.
 
autorouter said:
There should be a fuse between the battery and the charger. You could pull that out to isolate the charger from the battery.

Maybe the 'rcd' you mention is a combined rcd and mcb, in other words an rcbo. They are often fitted on MHs nowadays. If so, you don't know if the fault is an overcurrent (eg. a short) or earth leakage (eg water in the plug). It may be just an unlikely coincidence.
Click to expand...
I've looked at the owners manual again, there is no fuse listed for the charger on the fuse panel, so it could be a shared fuse, but all else seems to be working, so no fuse blown. Unless it's an inline fuse, perhaps.

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Dorwyn said:
Yes, that's all working just fine.

I've got another lead so I can check that when I get home. But it was working fine until after the battery change. I've checked the fuse on the lead (it's connected to the house via an outside 3 pin box + converter lead}.

It's just on/off. Will double check this though

That's a possibility I suppose, but I can't see how, the battery was an exact replacement, I kept the positive isolated from the earth side while disconnected, reconnected the positive first, then reconnected the neg. I've no idea where the charger is, I suppose it must be in the power box under the seat. I'll double check the fuses but am not sure that there is a fuse on the power box. Trouble is, the owners manual is just a generic thing, not specific to my van and the power panel shown is not the one on my van.
Click to expand...
Pull the kettle lead out of the back of the "power box" and re test the breaker, if it still trips it isn't that. If it resets fine, plug the power box back in and see if it trips out, you'll then have your answer.
 
OK, I'll try that later (possibly Sunday, when I get back)
 
Thinking slightly out of the box...............

Some years ago I lost half of my 240v system and it took a (useless!) "technician" three days to find I had caught one of the connector plugs under the seat, which in our van is close to the battery box, and partly disconnected it.

Just an idea! Sometimes it's the simple things.........................
 
Dorwyn said:
I've looked at the owners manual again, there is no fuse listed for the charger on the fuse panel, so it could be a shared fuse, but all else seems to be working, so no fuse blown. Unless it's an inline fuse, perhaps.
Click to expand...
If the charger is a 'stand alone' unit, hidden in a cupboard, under the wardrobe floor or behind a low level drawer etc, the fuse may well be in the charger casing.
Obviously, if the charger is part of the electronic control centre this won't apply.
 
Use a mega to test the circuit, between live and earth, if there is a short you will be able isolate different circuits to find where the problem is. Try the mains lead to start and carry on from there.

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Charlie9038 said:
Use a mega to test the circuit, between live and earth, if there is a short you will be able isolate different circuits to find where the problem is. Try the mains lead to start and carry on from there.
Click to expand...
Everyone has a MEGA in their bits and pieces drawer.
Most people here wouldn't know what it was or how to use it.
 
I've had my fingers on the probes when i've hit the test button in the past.
500v wakes you up ?

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