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Student & Learning Zone - City & Guilds
R1 + R2 readings
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<blockquote data-quote="SPECIAL LOCATION" data-source="post: 507635" data-attributes="member: 250"><p>Basic rule of thumb is have you changed any circuit parameters?</p><p></p><p>i.e. If you have added some additional wiring to a circuit then you should be testing &amp; issuing a MWC..</p><p></p><p>Whereas like-for-like replacement or accessory upgrade.. e.g. swap dimmer switch for LED compatible item,</p><p></p><p>or change double socket to USB double socket..</p><p></p><p>Then the original wiring is no different to before you did your work..</p><p></p><p>and can be argued that a MWC is unnecessary... </p><p></p><p>But swapping a single pendant for 6 recessed spot lamps has changed the circuit characteristics. </p><p></p><p>However it can also be argued that swapping a pendant &amp; rose, like for like,</p><p></p><p>could have disturbed the earth continuity or polarity to fittings further down the circuit if looped at light..</p><p></p><p>So if you don't test and/or document your tests, how do you prove it is all still working safely after you have left?</p><p></p><p> Guinness</p></blockquote><p></p>
[QUOTE="SPECIAL LOCATION, post: 507635, member: 250"] Basic rule of thumb is have you changed any circuit parameters? i.e. If you have added some additional wiring to a circuit then you should be testing & issuing a MWC.. Whereas like-for-like replacement or accessory upgrade.. e.g. swap dimmer switch for LED compatible item, or change double socket to USB double socket.. Then the original wiring is no different to before you did your work.. and can be argued that a MWC is unnecessary... But swapping a single pendant for 6 recessed spot lamps has changed the circuit characteristics. However it can also be argued that swapping a pendant & rose, like for like, could have disturbed the earth continuity or polarity to fittings further down the circuit if looped at light.. So if you don't test and/or document your tests, how do you prove it is all still working safely after you have left? Guinness [/QUOTE]
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Student & Learning Zone - City & Guilds
R1 + R2 readings
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