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kitchen lighting

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bramblepete | 13:17 Wed 20th Jun 2007 | DIY
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is it cheaper to run 9 spotlights on a 12v transformer system or off the normal 240v mains?
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The transformer is very efficient - over 95%. So you really just need to add up the Watts total of the bulbs to understand the relative use of electricity between the 2 methods.

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