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RCD protection in an IT run office

Former Community Member
Former Community Member
Jolly good morning all,


I am currently carrying out an EICR for an IT based company in their head offices.

Looking at the 12way  3-phase distribution board, I can see there are multiple ‘Office Sockets’ circuits labelled up on 32amp MCB’s and not a single RCD in sight. 

To my knowledge, the use of RCD’s is perhaps not required in this type of environment, but just wanted to check your opinions.


Many thanks you’s and I hope everyone is having a splendid dayV?
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    Well they probably were not required at all when it was installed.

    If they are needed to protect the wiring now depends on the wiring type (armoured, conduits or soft skin like T and E) and how it is routed.

    Also if they are needed to protect the users depends what is plugged into the sockets - if it is equipment that is regularly PAT'd and things are well managed so no risk of any random things that employees bring in from home,  then maybe there is a risk assessment that means the sockets do not need RCD cover.

    Some designs have an RCBO per desk in the floorplate. example  These are less of an issue, the only question then is wiring type.

    If not, perhaps ask to see that RA showing how the absence of RCDS is managed.

    If it does not exist, then either it needs creating, or if it honestly cannot, then RCBOs to be fitted in place of the MCBs.


    Can I ask how long have you been doing inspections ? this is a very common situation.


    Mike.

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  • 0
    Well they probably were not required at all when it was installed.

    If they are needed to protect the wiring now depends on the wiring type (armoured, conduits or soft skin like T and E) and how it is routed.

    Also if they are needed to protect the users depends what is plugged into the sockets - if it is equipment that is regularly PAT'd and things are well managed so no risk of any random things that employees bring in from home,  then maybe there is a risk assessment that means the sockets do not need RCD cover.

    Some designs have an RCBO per desk in the floorplate. example  These are less of an issue, the only question then is wiring type.

    If not, perhaps ask to see that RA showing how the absence of RCDS is managed.

    If it does not exist, then either it needs creating, or if it honestly cannot, then RCBOs to be fitted in place of the MCBs.


    Can I ask how long have you been doing inspections ? this is a very common situation.


    Mike.

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