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Student & Learning Zone - City & Guilds
Voltage Drop
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<blockquote data-quote="Traineeboy" data-source="post: 501782" data-attributes="member: 32807"><p>I understand that in a domestic dwelling single phase you are allowed 5 % power and 3 % lighting voltage drop. </p><p></p><p>Just some questions I wanting to clarify .....</p><p></p><p>1. I assume that voltage drop is from the main incomer not the distribution board the circuit is coming from. </p><p></p><p>2. If you had to wire a lighting circuit in 2.5 mm2 cable due to voltage drop but then at the switch go off to the light in 1.5 mm2 ( to fit the conductors into the light) would be OK ? Remember the reason for the larger cable isn't because of CCC or other reasons but purely because of the voltage drop. This would obviously be wiring at the switch not loop method. </p></blockquote><p></p>
[QUOTE="Traineeboy, post: 501782, member: 32807"] I understand that in a domestic dwelling single phase you are allowed 5 % power and 3 % lighting voltage drop. Just some questions I wanting to clarify ..... 1. I assume that voltage drop is from the main incomer not the distribution board the circuit is coming from. 2. If you had to wire a lighting circuit in 2.5 mm2 cable due to voltage drop but then at the switch go off to the light in 1.5 mm2 ( to fit the conductors into the light) would be OK ? Remember the reason for the larger cable isn't because of CCC or other reasons but purely because of the voltage drop. This would obviously be wiring at the switch not loop method. [/QUOTE]
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