it earthing

  1. eveares

    Regulation 710.411.6 (Group 2 Medical Locations)

    Just been reading my copy of BS7671 in my spare time, regulation 710.411.6 says that an IT earthing system with a IMD must be used for group 2 medical locations. Does that mean that expect for devices covered by reg 710.411.4 in group 2 locations, all medical devices must and always be fed from...
    • eveares
    • Thread
    • earth earthing group 2 hostpital it earthing medical rcd
    • Replies: 2
    • Forum: Electrics UK
  2. eveares

    What do the regs say about sockets fed from portable UPS being RCD Protected?

    Just wondering what BS7671 says about fixed sockets being RCD protected when being fed from a portable UPS (i.e. removable rack type UPS) when the the UPS is operating on battery mode and the Line & Neutral conductors are isolated from Earth. (Effectively a Isolated Terra based earthing system.)...
    • eveares
    • Thread
    • battery backup earth fault floating earth isolated it earthing rcd socket tt earthing ups
    • Replies: 40
    • Forum: Electrics UK
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