External garage electricity wrongly connected to neighbours supply

ericmark · 2026-01-17T15:56:05+0000

Working with this

as the volts increase, so does the mA leakage, at 4 volts within limits, at 12 volts near the edge, and by 15 volts tripped.

JohnW2 · 2026-01-17T16:02:13+0000

ericmark said:
Working with this ...... as the volts increase, so does the mA leakage, at 4 volts within limits, at 12 volts near the edge, and by 15 volts tripped.

Yes, but only because you have introduced a 500Ω N-E fault.

As I've written, if there were any loads on the installation, introducing such a fault path would cause the RCD to trip even if the N-E voltage were zero.

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External garage electricity wrongly connected to neighbours supply

ericmark

JohnW2

DIYnot Local

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