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Use of RCD protection in industrial and commercial installations

Andy
Hello All

We all know the benefits of RCD protection and how the regulations are changing regarding domestics. I am constantly being asked if RCDs are required for normal switched socket circuits in industrial installations apart from the obvious use of RCDs for areas likely to cause a reduction in resistance (sockets that could conceivably be used out side). So are RCDs required for general office circuits, for dedicated IT equipment (computers etc), work areas such as clean dry packing areas and so on.


Given RCDs require testing regularly and the results recorded which causes disruption to production equipment, IT equipment, Data centers etc are RCDs really required especially if they are installed within steel conduit or steel trunking on walls or under floors?


Any advice welcome


Andy
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  • 0

    (How well would an RCD work down stream of a UPS?)



    Humm, depends on how the load side of the UPS is configured - if as a TN system then the RCD operates the same as anywhere else, if an IT system then it doesn't matter since it's safe under single fault conditions anyway.


    Maybe a better question is how would an RCD upstream of a UPS work to protect from electric shock - yes the RCD might trip but if the UPS then immediately reconnects the victim to 230V it's probably not having the intended effect...


       - Andy.
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  • 0

    (How well would an RCD work down stream of a UPS?)



    Humm, depends on how the load side of the UPS is configured - if as a TN system then the RCD operates the same as anywhere else, if an IT system then it doesn't matter since it's safe under single fault conditions anyway.


    Maybe a better question is how would an RCD upstream of a UPS work to protect from electric shock - yes the RCD might trip but if the UPS then immediately reconnects the victim to 230V it's probably not having the intended effect...


       - Andy.
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