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Do-It-Yourself (DIY) Question & Answer Forum
Feeding cable through insulation
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<blockquote data-quote="DIY GUY" data-source="post: 530007" data-attributes="member: 29427"><p>At my consumer unit my downstairs lighting circuit is ran from a 6amp breaker RCD protected. It runs 7 low wattage led lights atm and I want to add 5 more low wattage led lights. So 12 lights total will be ran from lighting breaker. 6amps can handle 1440watts. If I’m to derate by 50% as some cables will be in insulation or in conduct in insulation this would drop the wattage to 720watts? 12 lights led lights at say 5watts each would be 60watts = 0.25amps. Do these calculations seem correct in what I’m saying in which case I’m perfectly safe to run my few cables behind the insulated wall? </p><p></p><p>Any help would be great.</p></blockquote><p></p>
[QUOTE="DIY GUY, post: 530007, member: 29427"] At my consumer unit my downstairs lighting circuit is ran from a 6amp breaker RCD protected. It runs 7 low wattage led lights atm and I want to add 5 more low wattage led lights. So 12 lights total will be ran from lighting breaker. 6amps can handle 1440watts. If I’m to derate by 50% as some cables will be in insulation or in conduct in insulation this would drop the wattage to 720watts? 12 lights led lights at say 5watts each would be 60watts = 0.25amps. Do these calculations seem correct in what I’m saying in which case I’m perfectly safe to run my few cables behind the insulated wall? Any help would be great. [/QUOTE]
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Feeding cable through insulation
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