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Do-It-Yourself (DIY) Question & Answer Forum
Why is volt drop so important?
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<blockquote data-quote="davetheglitz" data-source="post: 57948" data-attributes="member: 173"><p>I reckon I lost a job last week supplying an outbuilding. To allow for volt drop I had to run two SWA cables - one for lighting to allow for volt drop and a separate one for power (a bit more generous). As always I try to get to the reasoning behind the regs - but to my mind one cable would have done the job. The cable would have been adequately protected by the supply fusing. Given the huge variety of supply voltages does the volt drop matter that much? Why is lighting volt drop so critical? Understand for a new building - but an outbuilding for occasional use? I'm sure they are now running on completely inadequate extension leads covered in plastic bags - but I could have given them something within budget that was safe - if not directly to regs. Can someone help me with the reasoning?</p></blockquote><p></p>
[QUOTE="davetheglitz, post: 57948, member: 173"] I reckon I lost a job last week supplying an outbuilding. To allow for volt drop I had to run two SWA cables - one for lighting to allow for volt drop and a separate one for power (a bit more generous). As always I try to get to the reasoning behind the regs - but to my mind one cable would have done the job. The cable would have been adequately protected by the supply fusing. Given the huge variety of supply voltages does the volt drop matter that much? Why is lighting volt drop so critical? Understand for a new building - but an outbuilding for occasional use? I'm sure they are now running on completely inadequate extension leads covered in plastic bags - but I could have given them something within budget that was safe - if not directly to regs. Can someone help me with the reasoning? [/QUOTE]
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Why is volt drop so important?
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