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    UK Is the main fuse head satisfactory protection for SWA supply cable?

    Nope no fuse or MCB located anywhere apart from of course the 100A main head. I would assume they’ve used the rotary isolator just as a means to connect the SWA cable instead of wiring it directly into the bottom of the DP switch. But I just don’t understand if you’re going through the effort of...
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    UK Is the main fuse head satisfactory protection for SWA supply cable?

    Just for arguments sake as I come across quite a lot of questionable installations in the digital advertising industry. Am I right in saying even if that cable was say 25mm SWA & the main fuse head was 100A it would still need either an MCB to protect that armoured cable or alternatively a...
  3. S

    UK Is the main fuse head satisfactory protection for SWA supply cable?

    The 100A DP switch is pretty standard in these supply feeder pillars. Just a means of isolation for safe maintenance on the installation down the line. The 63A rotary isolator however is the part that seems pointless to me. I imagine it was just used a a point to terminate the SWA cable into...
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    UK Is the main fuse head satisfactory protection for SWA supply cable?

    Commercial/Industrial installation. Summary of installation: Main feeder pillar contains TNCS incoming supply single phase 100A main fuse, 25mm DNO tails, meter, 100A double pole isolator switch, 25mm tails/16mm CPC to 63A rotary isolator, 10mm SWA cable 25m run to digital advertising panel...

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