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EddieB

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Guy's can you confirm that if I extend an existing ring main for (one socket) the existing circuit has no RCD protection I can do so without adding RCD protection
 
Your additional work must meet the current regulations thus the best way to do this is fit an RCD, if you have no need to protect your new cables due to their routing or machanical protection then you may be able to get away with having your new socket as an rcd/socket but this isn't really what the regulations are trying to do, you really should be incorporating rcd to the circuit as an whole.
 
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Guy's can you confirm that if I extend an existing ring main for (one socket) the existing circuit has no RCD protection I can do so without adding RCD protection

Any socket circuit or this particular one you are working on ?
Your work has to comply with the regulations as a minimum. As a practising electrician you know the requirements for additional protection using RCDs already, so just apply this knowledge to your install.
 
Thanks for the replies lads
This can become rather costly for the customer, the consumer unit will not accept RCBO's,it's not an issue for one socket as it can be an RCD socket but if you install a couple of sockets or the customer wants a certain type of socket ie brushed Chrome with black inserts etc etc then the only way it can be done at reasonable cost is to install a RCD spur in circuit and then feed the additional sockets from the the spur
 
Thanks for the replies lads
This can become rather costly for the customer, the consumer unit will not accept RCBO's,it's not an issue for one socket as it can be an RCD socket but if you install a couple of sockets or the customer wants a certain type of socket ie brushed Chrome with black inserts etc etc then the only way it can be done at reasonable cost is to install a RCD spur in circuit and then feed the additional sockets from the the spur

Or use a RCD in a small enclosure next to the DB to protect the whole circuit.
 
Or use a RCD in a small enclosure next to the DB to protect the whole circuit.
done that a few times. might be the best option in the OP's case, use existing OCPD to feed the RCD.
 
That's what I figure, the sockets and cable will be protected by the RCD, albeit limited to 13amps by the 1362 in the spur:smile5:
 

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