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OSG Standard Circuits - 3A lighting

Former Community Member
Former Community Member
As we are all using led lamps / fittings now it seems this should be a standard circuit.

3A MCB with 1.0/1.0 cable


Lighting circuits used to be based on 100w incandescent lamp / room at 1800 lumens which is equiv to 20w led.

What are the figures for max distance for a 3A type B using 1.0/1.0 as an addition in table 7.1 page 66 in OSG?
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    Or that there is no good reason to use a B3 MCB; especially since AFAIK, 1 mm² is the smallest size of T&E.
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    Or that there is no good reason to use a B3 MCB; especially since AFAIK, 1 mm² is the smallest size of T&E.
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