Is my main socket ring too big?
I don't have any regs or tables on me to calculate what that limit
is due to, but if it's the earth fault loop impedance, then the RCD
effectively overcomes that limit.
I thought it was seriously frowned upon to rely on an RCD for earth fault
impedence problems, unless it was a TT system and the problems were due to
(relatively) high earth rod impedence?
Christian.
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