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BS 7671 Section 521.8.3

Former Community Member
Former Community Member

Section 521.8.3 of BS7671 states: Where two or more circuits are terminated in a single junction box this shall comply with BS EN 60670-22. My question is what if several circuits will terminate in a single wiring device back box which are usually  manufactured to comply with   BS EN 60670-1.

  • 0

    I would say, however, that the 13th Edition definition, as well as the current definition, are not a circuit without the source of supply. 

    None of these definitions make technically correct sense in terms of the “electrical science”.

  • 0

    I agree that there seems to have been a drift in the language over the years - originally a circuit was the entire loop, starting at the source of voltage, so conceptually you had many overlapping circuits - the lighting circuit started at the substation, passed over the DNO's wires, through the meter, out through way 6 of the CU and the lighting cables to the furthest light. The shower circuit shared the same path until way 1. The bit after the CU fuse was designated a ‘sub-circuit’.

    Somewhere along the lines we dropped the ‘sub-’ bit from the name, so now when we refer to a circuit we're really just referring to a sub-circuit.

    I don't see the term way catching on instead of (sub-)circuit though - ‘the upstairs lighting way’? No-one will know what I'm talking about… (I know, what's new there you say…)

       - Andy.

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