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Recommended checks before CU change

Former Community Member
Former Community Member
As most of you know I’ve only been qualified for just over a year and I’ve got a quote to do for a cu upgrade.


I know I’m nowhere experienced enough to do EICR’s yet, but what would you guys recommend I check/test before doing the cu upgrade and should I do these checks/tests at the quote stage?
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    God no, well no more than hundreds of the things up and down the land, actually that looks like a good one to me , no dripping tar, no water damage to back board, no bits missing, a clear earth tail that looks official and may actually do something.. The only need to get anything more serious done than the seals removed is if the measured Zs is too high related to the main fuse.

    The observation is that we are expected to rush round inspecting and measuring and putting stickers on for retests on a regular basis, and the corresponding DNO risk management in some areas looks like, "call us if it starts to smoke'. There is a bit of a cultural gap.
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    God no, well no more than hundreds of the things up and down the land, actually that looks like a good one to me , no dripping tar, no water damage to back board, no bits missing, a clear earth tail that looks official and may actually do something.. The only need to get anything more serious done than the seals removed is if the measured Zs is too high related to the main fuse.

    The observation is that we are expected to rush round inspecting and measuring and putting stickers on for retests on a regular basis, and the corresponding DNO risk management in some areas looks like, "call us if it starts to smoke'. There is a bit of a cultural gap.
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