I need an RCBO for a domestic Wylex Consumer unit approx 15 years old. The only marking on it is NS704 BS5486. Anyone know if there is one available as the cables are too short to extend to a new board?
BS5486 sounds like an old brown board with rewireable fuses.
If that is what you've got then there is no RCBO for that.
You would need to mount and external RCD on the circuit you are modifying.
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