BS 7288

[Jock from the north]

Without looking in regs have rcd spur units found their way back in book .I've been going through test sheets all day but I'll look after my spag boll.
531.3.4.1 bs7288 only provide additional protection.

 

[littlespark]

There was mention on the forum at the time that they crept back in in the 1st amendment after being missed out in the initial 18th Ed.
It might have even been in a corrigendum (spelling!)

 

[Jock from the north]

There was mention on the forum at the time that they crept back in in the 1st amendment after being missed out in the initial 18th Ed.
It might have even been in a corrigendum (spelling!)

Yeh there def not in initial 18th but are in amm 2 with a note "only provides additional protection" and can be operated by ordinary persons

 

[Rockingit]

Yeh there def not in initial 18th but are in amm 2 with a note "only provides additional protection" and can be operated by ordinary persons

Well…. What else would you want them to be doing anyway?? By virtue of them being a socket outlet, fault protection is by ADS and over current protection by OCPD already.

 

[Jock from the north]

Well…. What else would you want them to be doing anyway?? By virtue of them being a socket outlet, fault protection is by ADS and over current protection by OCPD already.

I understood it meant it couldn’t be relyied on for fault protection where the disconnection times couldn’t be met by ocpd in circuit .

 

[Risteard]

I understood it meant it couldn’t be relyied on for fault protection where the disconnection times couldn’t be met by ocpd in circuit .

Indeed it can't, as an SRCD doesn't protect the supply wiring.

 

[Pretty Mouth]

These can also be FCU RCDs, which could be used to protect fixed wiring. For what ever reason, these can only be additional protection, and can't be used to meet disconnection times in the way that RCDs to BS61008 etc can be. (although the BS1362 fuse in it could be used to meet disconnection times).

 

[Risteard]

These can also be FCU RCDs, which could be used to protect fixed wiring. For what ever reason, these can only be additional protection, and can't be used to meet disconnection times in the way that RCDs to BS61008 etc can be. (although the BS1362 fuse in it could be used to meet disconnection times).

Yes, but again an FCURCD won't protect the cables supplying it. It depends what exactly is meant by the statement in BS 7288.

 

[Pretty Mouth]

Yes, but again an FCURCD won't protect the cables supplying it. It depends what exactly is meant by the statement in BS 7288.

Not sure I follow? You wouldn't normally install an RCD of any type and expect it to protect the supply cables, only those downstream.

 

[Risteard]

Not sure I follow? You wouldn't normally install an RCD of any type and expect it to protect the supply cables, only those downstream.

No, you wouldn't. But my point is that it may be making it clear that those circuit conductors aren't protected, whereas with an RCCB or RCBO upstream they obviously are. Don't forget that not everyone thinks as logically as you do, so that may be where the statement has originated from. Just my opinion.