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On the subject of pulling the DNO fuse.

alanblaby
There have been a couple of reports here of the DNO confronting electricians who have pulled their fuse.


It's getting closer to home, a work colleague was doing a CU change on a domestic house last week, no isolator fitted, so he pulled the fuse (no seals present).

South Nottinghamshire.


Around 90 minutes later there was a knock on the door, a guy from Western Power was investigating a power loss at the property, reported by the Smart Meter phoning home.

He gave the sparky a talking to, and warned they are getting strict in pursuing people who do it, he said meter fiddling was rife, so any loss of power is checked out asap.
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    For a Zs of 1.3 initially at the consumer unit, would the fault level justify a space suit?



    But you can't know the PFC until after you've measured it - if the high loop impedance was due to a loose connection or corrosion on the outgoing fuse terminal for example the fault current would likely be orders of magnitude higher at the incoming contact.

      - Andy.
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  • 0

    For a Zs of 1.3 initially at the consumer unit, would the fault level justify a space suit?



    But you can't know the PFC until after you've measured it - if the high loop impedance was due to a loose connection or corrosion on the outgoing fuse terminal for example the fault current would likely be orders of magnitude higher at the incoming contact.

      - Andy.
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