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Discuss Filling in switch fuses on a certificate in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net

It's not my idea of doing things...…..need a single phase supply so pick up from a local 3 phase circuit point. It should have a separate supply as a single phase circuit....BUT, which regulation gives non compliance?
As regards the DB, it's been taken from a final sub circuit so what is the difference between that and a fixed fused spur.
I wouldn't treat it as separate DB with it's own schedule but make a note on the cert.
Edit. What about rcd with the socket?
 
Last edited:
when and why ?
Isn't that what we do with a DB??? To ensure protective devices will operate within required times???? Fuses are the same??
It's not my idea of doing things...…..need a single phase supply so pick up from a local 3 phase circuit point. It should have a separate supply as a single phase circuit....BUT, which regulation gives non compliance?
As regards the DB, it's been taken from a final sub circuit so what is the difference to that and a fixed fused spur.
I wouldn't treat it as separate DB with it's own schedule but make a note on the cert.[/QUOTE
It's not my idea of doing things...…..need a single phase supply so pick up from a local 3 phase circuit point. It should have a separate supply as a single phase circuit....BUT, which regulation gives non compliance?
As regards the DB, it's been taken from a final sub circuit so what is the difference to that and a fixed fused spur.
I wouldn't treat it as separate DB with it's own schedule but make a note on the cert.
Thankyou
 
Long week
What if 40amp supply to a switch fuse. 63amp fuses in switch fuse.
It's not my idea of doing things...…..need a single phase supply so pick up from a local 3 phase circuit point. It should have a separate supply as a single phase circuit....BUT, which regulation gives non compliance?
As regards the DB, it's been taken from a final sub circuit so what is the difference between that and a fixed fused spur.
I wouldn't treat it as separate DB with it's own schedule but make a note on the cert.
Edit. What about rcd with the socket?
It's not my idea of doing things...…..need a single phase supply so pick up from a local 3 phase circuit point. It should have a separate supply as a single phase circuit....BUT, which regulation gives non compliance?
As regards the DB, it's been taken from a final sub circuit so what is the difference between that and a fixed fused spur.
I wouldn't treat it as separate DB with it's own schedule but make a note on the cert.
Edit. What about rcd with the socket?
Already coded
 
If I have understood correctly and the circuit is fed from a 32A MCB, then surely the 32A fuses are redundant as they dont add any aditional protection, and I would have thought the MCB would always operate first (unless maybe its a D curve?)
 

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