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  1. SimonUK

    Grading of HRC fuse with MCB

    Thanks for the responses guys, very useful. Scotty, when you say "from a quick glance at the curves" I take it you are referring to the curves in the meshield guide? There may be an option to increase eg the 63A fuse to 100A - this would still protect the cable and put a bit of distance...
  2. SimonUK

    Grading of HRC fuse with MCB

    Hello I am doing a desktop study looking at grading between HRC fuses and downstream MCBs. The upstream fuses tend to be GEC Alstom type 'T' HRC to BS88 and I have obtained data including the 'pre-arcing' values. For the downstream MCBs, I need to make sure that at the particular DB fault...

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