The DNO arrived yesterday and replaced my existing 80 Amp fuse with a new plastic 80Amp fuse. I thought I had a 100A fuse but no 80 Amps it is.
Did you have 80A fuse prior or was it 60A? and the DNO came to check, with the intention of fitting a new fuse carrier with a pre installed upgraded 80A fuse.
Distribution Network Operator – Cut-out Types & Ratings Guidance:
Black Plastic Cut-Out (Circa 1960s to 1990s)
If presented with this type of cut-out the LCT device installer must assume
that the fuse size in the cut-out is 60A. If the installation designer’s
calculations confirms that the customer’s installation total load will not
exceed 60A at any time then there is no need for a DNO assessment and
the install can proceed and an appropriate notification sent to the DNO.
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