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Dear dingbat

I am still learning hence why I am still asking.

In which case, well done and please accept my apology for barging in.

(But, as you've no doubt noticed by now, it is by no means unusual for trading electricians to ask such basic questions.)

As you're learning, have a read of the introduction to Chapter 41 of BS 7671 on pages 44-45, then carry on to read section 411. All should then be clear.
 

DIYnot Local

Staff member

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