volt drops

Joined
7 Jun 2007
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Lancashire
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United Kingdom
just tyring to look up what the maximum volt drops are, having a bit of a problem. i found that lighting circuits is 3% but thats all i can find can any one show me a good website that shows all circuit % thanks for any help
 
For the 17th edition of BS7671 the maximum permissable voltage drop for a lighting circuit on the consumers side of the installation is 3%.
For power circuits it is 5%.
This comes from appendix 12
 

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