1.5 mm T&E on a B32 MCB

[GBDamo]

Not working on this circuit but not sure what to do. The circuit appears to only supply an unused FCU which I'd like to disconnect in the CU but as it has nothing to do with the work I'm doing I cannot spend too much time investigating the full circuit.

I have isolated the MCB overnight and asked the customer to have a look round to see if anything else is fed from it with the intention of disconnecting it in the morning.

Is this the best way forward, can't bring myself to ignore it so would like to leave it as safe as possible without incurring hours of extra work I don't have the time to do.

 

[Strima]

If it powers nothing then, with the customers permission, remove it.

 

[Pete999]

If it powers nothing then, with the customers permission, remove it.

Or change it for a 6Amp cb

 

[GBDamo]

Pete, Changing the MCB brings the circuit under my responsibility and I simply don't have the time to T&I it, I don't have a 6amp either.

Just checking that disconnecting it doesn't have any hidden consequences I haven't thought of.

 

[Pete999]

Pete, Changing the MCB brings the circuit under my responsibility and I simply don't have the time to T&I it, I don't have a 6amp either.

Just checking that disconnecting it doesn't have any hidden consequences I haven't thought of.

What exactly were you there to do?

 

[Octopus]

Not working on this circuit but not sure what to do.

Comment on the certificate for the work you are doing and move on to the next job

 

[Leesparkykent]

1.5 is the minimum for a power circuit, if the only thing connected is a fused spur then it can't pull no more than 13A. If the installation method permits adequate CCC and the CSA is adeqate for fault current/thermal constraints under fault conditions then technically there is nothing wrong with it.

 

[ipf]

1.5 is the minimum for a power circuit, if the only thing connected is a fused spur then it can't pull no more than 13A. If the installation method permits adequate CCC and the CSA is adeqate for fault current/thermal constraints under fault conditions then technically there is nothing wrong with it.

True.....but he'll have to check....and that's gonna take time, man.

 

[Pete999]

True.....but he'll have to check....and that's gonna take time, man.

I agree but we don't know what the OP was tasked with in the first place, If he were to remove the OCPD would that need a MNWC?

 

[GBDamo]

1.5 is the minimum for a power circuit, if the only thing connected is a fused spur then it can't pull no more than 13A. If the installation method permits adequate CCC and the CSA is adeqate for fault current/thermal constraints under fault conditions then technically there is nothing wrong with it.

What exactly were you there to do?

replacing like for like, just thought I'd do a quick Ze, IR and check the RCD and noticed the the 1.5 in the B32.