Does anyone roughly know how much to replace a consumer unit? No need to rewire if testing proves alright
No but if it's plastic and passes the testing replace it anyway before it burns your house down.
(See Amendment No. 3 to BS 7671 - Regulation 421.1.201 - which says any new unit should be made with steel or another non-combustible material).
@musa started
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Does anyone roughly know how much to replace a consumer unit? No need to rewire if testing proves alright