resolved: MCB on but no power

[rp9]

The left hand incomer is 100mA time delayed.

This replaced a messy old fusebox and took them two days to figure out the house wiring. As mentioned previously, the 3 sockets in the room above the garage all run from different MCBs.

Is there anything I should be concerned about? We're hoping to extend and move the kitchen so will have a chance then to rectify things.

 

[1john]

The only thing to be concerned about is that you have a single point of failure which is that upfront 100mA time delayed RCD, which when trips leaves you with nothing.

I am hoping you had some certification with the installation of the consumer unit, and that you kept it??

 

[pjcomp]

The only thing to be concerned about is that you have a single point of failure which is that upfront 100mA time delayed RCD, which when trips leaves you with nothing.

Not an unusual situation, especially in TT systems which have to be covered by an all-installation RCD.

PJ

 

[ban-all-sheds]

Is there anything I should be concerned about?

Yes - the fact that you have sockets on a 100mA time delayed RCD. They should be on the 30mA one.

 

[rp9]

I am hoping you had some certification with the installation of the consumer unit, and that you kept it??

Good question. Thinking back I'm not sure they ever sent it through, will have to dig out paperwork from that time (we had a lot going on with electrics/new boiler/plastering etc etc.)

 

[1john]

The only thing to be concerned about is that you have a single point of failure which is that upfront 100mA time delayed RCD, which when trips leaves you with nothing.

Not an unusual situation, especially in TT systems which have to be covered by an all-installation RCD.

PJ

Not unusual at all, although does it comply? I have never installed a TT installation like that, it seems crazy, I have always used an individual main switch to henly blocks feeding two smaller consumer units minimum with RCD protection upfront.

 

[ban-all-sheds]

Not unusual at all, although does it comply?

Does it? No.

Did it? Ish. It was always a bit flaky re 314-01-01 and 314-01-02, but 314-01-01 wasn't as explicitly worded as 314.1.

Although if were were honest we'd admit that 314.1 didn't change or add anything, it just made clear the sorts of things people should always have been thinking about anyway.

ane I have never installed a TT installation like that, it seems crazy,

But widely done - it was definitely the accepted default.

 

[1john]

I know it was accepted, i have seen plenty of examples of it, although it isnt right, and it doesnt comply. Quite nice that they reworded that reg actually.