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<blockquote data-quote="Nicky Tesla" data-source="post: 24080" data-attributes="member: 445"><p>Its nowt to do with Zs, EG an immersion heater is switched on, you measure the voltage at the CU and then at the imm heater, then check if the voltage has dropped less than 9.6v i think. But on a ring cct, wot is to be plugged in, Who Knows?</p></blockquote><p></p>
[QUOTE="Nicky Tesla, post: 24080, member: 445"] Its nowt to do with Zs, EG an immersion heater is switched on, you measure the voltage at the CU and then at the imm heater, then check if the voltage has dropped less than 9.6v i think. But on a ring cct, wot is to be plugged in, Who Knows? [/QUOTE]
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