One RCD has tripped in fusebox

[freedomsoon1]

Hi,
Fuse box is 3 years old, it has 2 rcd's and one has tripped. We have checked the fuses in the wall sockets and all ok. Is it possible to take out the rcd which won't reset and buy another one to replace it. If so how do you take the rcd out of the fuse box, do you just pull it out or is it wired in. Do rcd's have a fuse in them, if so could this be the problem. Any help on this would be appreciated.
Thanks

 

[bernardgreen]

It is 99.9% certain that you have a fault that the RCD has detected and then operated to protect you and the house from any danger that the fault will create.

It will not be resetable until the fault has been found and removed or repaired.

This could be a defective appliance, unplug ( pull the plug, not just switch off ) all appliances on affected sockets and see if the RCD will reset. If so plug appliances back in one at a time with about half an hour between each one to allow the fault to have time to affect the RCD ( not all faults in appliances appear immediately ). If you find a faulty appliance change it or get it repaired. If no faulty appliances then it is a wiring problem and you do need to get a reputable electrician in to test the wiring.

Your comments about changing the RCD show you do not understand how RCDs are fitted, ( quite normal, most people don't ) which suggests you need to employ a reputable electrician to do anything more than appliance checking.

 

[wingcoax]

Try opening all mcb's on that side, reset the rcd and then one by one reset the mcb's. As bernard says "it will only be one circuit"

 

[PrenticeBoyofDerry]

As above bernardgreen has pointed out the likely reason behind the RCD tripping and not resetting is a faulty appliance that is on load, most appliances can be unplugged some are fixed an should be isolated providing it is a two pole isolator or disconnected from circuit.
It is a process of elimination and I would open all MCBs then one by one close and try rest RCD then once a faulty circuit has been found, remove from circuit one by one each appliance until the RCD resets.
What circuits does this RCD protect? It could also be related to IP problems with outside lighting or equipment.
Has any work been done in the property recently that could have caused damage to cables, even removing, refitting/replacing accessories such as socket. switches, lights etc?
Any moisture got to cable terminals?

 

[vibrobullit407]

Will the RCD reset when the consumer unit main switch is isolated? More likely a fault as occurred as stated above.

Get an electrician in to confirm and rectify the fault as (no offence) you do not seem to have the know how to carry out the work required!

 

[vibrobullit407]

Try opening all mcb's on that side, reset the rcd and then one by one reset the mcb's. As bernard says "it will only be one circuit"

Could be a neutral earth fault meaning that isolating the lines may not identify the circuit.

Have you hung any pictures on the walls as it is very common for people to nail through a cable this way.

 

[Chri5]

Irons!

When the rcd tripped what were you doing? Was the kettle or iron being used?

 

[freedomsoon1]

Hi,

Thank you for all your replies and help. I have taken advice from this forum and shut off all the MCB'S and then opened each one as requested. This showed that the fault was in the fuse box in the garage which had blown for some reason. I have lived in the house for 16 years and have never had to go into this box before. I have ordered a new fuse and hopefully all will beok. I have turned off the fuse box in the garage and the rcd will set again.
Thanks for all your comments.

 

[riveralt]

Hi,

Thank you for all your replies and help. I have taken advice from this forum and shut off all the MCB'S and then opened each one as requested. This showed that the fault was in the fuse box in the garage which had blown for some reason.

What type of fusebox is this?
What type of circuit does it control?

I have lived in the house for 16 years and have never had to go into this box before. I have ordered a new fuse and hopefully all will beok. I have turned off the fuse box in the garage and the rcd will set again.
Thanks for all your comments.

Depending on the 'fuse' it is more likely to be a wiring issue than a broken fuse.

 

[PrenticeBoyofDerry]

Hi,
I have taken advice from this forum and shut off all the MCB'S and then opened each one as requested. This showed that the fault was in the fuse box in the garage which had blown for some reason.I have ordered a new fuse and hopefully all will be ok. I have turned off the fuse box in the garage and the rcd will set again.

Now you found the faulty circuit. Does the RCD reset, with the MCB for the garage distribution circuit between garage and consumer unit on?
Also if you energised the garage fuse box without the fuse in place does the RCD still stay on?
It's unlikely that the fuse breaking in garage would prevent the RCD from being reset. Likely to be a fault within the circuit still!