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Maximum Zs
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<blockquote data-quote="binky" data-source="post: 456275" data-attributes="member: 490"><p> I would work on 1cct like the cooker, get R1+R2 to double check cct, take Zs direct from cables, not through the accessory plate, if Zs is still high repeat at MCB top and bottom of breaker (ie a Ze type test), check all terminals on MCB, main switch and any RCDs are tight. Check busbar is installed correctly. </p><p></p><p>If using a plug-in test lead it is not unusual to get higher readings, plug in and out several times to remove any corrosion, switch on and off several times to clean contacts, then re-test.</p></blockquote><p></p>
[QUOTE="binky, post: 456275, member: 490"] I would work on 1cct like the cooker, get R1+R2 to double check cct, take Zs direct from cables, not through the accessory plate, if Zs is still high repeat at MCB top and bottom of breaker (ie a Ze type test), check all terminals on MCB, main switch and any RCDs are tight. Check busbar is installed correctly. If using a plug-in test lead it is not unusual to get higher readings, plug in and out several times to remove any corrosion, switch on and off several times to clean contacts, then re-test. [/QUOTE]
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