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Old 14th Apr 2020, 10:13 am   #15
Herald1360
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Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,527
Default Re: Very Old (Immersion Heater?) Switch

ISTR 6kW with a fairly fine sprinkler head was common for early electric showers so 26A.

20A fuse rating sounds about right for protection of a 2.5sqmm radial circuit.
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