Periodic inspection

[telectrix]

personally, i'd recommend replacing that CU. never know what hammering it's been subjected to over the years, if the sparks is happy to do it for a ton, then good luck to him. he'll be busy but never rich.

 

[domestelec]

I can't believe it either, I am trying to seek an answer. So far everything I have looked at points to an RCCB and I wish it didn't however I have to be certain before I can sign it off.

 

[GLENNSPARK]

personally, i'd recommend replacing that CU. never know what hammering it's been subjected to over the years, if the sparks is happy to do it for a ton, then good luck to him. he'll be busy but never rich.

why?


if its good for continued service....

 

[telectrix]

i did say recommend, not insist. it may be OK for continued service, but while we can test the RCD/s operation, we have no means of testing MCBs, and a failure of any part in the future would leave a poor sparks searching for replacements, whereas with a new CU, any component can usually be replaced from van stock.

 

[GLENNSPARK]

i did say recommend, not insist. it may be OK for continued service, but while we can test the RCD/s operation, we have no means of testing MCBs, and a failure of any part in the future would leave a poor sparks searching for replacements, whereas with a new CU, any component can usually be replaced from van stock.

well i identify with this tel...
but its all about proving beyond any reasonable doubt that the install was good for continued service at the time the ECR was carried out....

 

[telectrix]

that's my point. how can anyone be sure that those old breakers are still capable of breaking at the correct value of overload.

 

[GLENNSPARK]

that's my point. how can anyone be sure that those old breakers are still capable of breaking at the correct value of overload.

but you could say that for any even recent install where they have been clearing loads of faults..
now, whats the PFC here?...thats the nut of it
wouldn`t you agree Tel....

 

[domestelec]

I again have spent more time today trying to find out more detail and I am getting the same results. BS 4293 is replaced with BS EN 61008 RCCB, Residual current circuit breaker without integral over current protection. On that basis I would have to give them a code 1. Be interesting to hear feedback regarding this decision.

 

[GLENNSPARK]

I again have spent more time today trying to find out more detail and I am getting the same results. BS 4293 is replaced with BS EN 61008 RCCB, Residual current circuit breaker without integral over current protection. On that basis I would have to give them a code 1. Be interesting to hear feedback regarding this decision.

no...
have another look....then get back to us...

 

[GLENNSPARK]

i think what you mean is the characteristics of the older type RCCBs....which in this case would be to BS4293....replaced with BSEN61008....
for RCBOs its 61009 you would be refering to...
and dont forget its 200mS at X1 for an RCD/RCBO to BS4293..
300ms for an RCD/RCBO to BSEN61008/61009...