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<blockquote data-quote="Barx" data-source="post: 539979" data-attributes="member: 121"><p>Test before the RCD? What is the Ze reading. 20 amps could be a reasonable reading on a TT. Hence the requirement for upfront RCD on TT systems as the fault current won't always be high enough to trip / blow fault protection.</p><p>If you're doing a Zdb / Zs reading, going to have to be on lo current.</p></blockquote><p></p>
[QUOTE="Barx, post: 539979, member: 121"] Test before the RCD? What is the Ze reading. 20 amps could be a reasonable reading on a TT. Hence the requirement for upfront RCD on TT systems as the fault current won't always be high enough to trip / blow fault protection. If you're doing a Zdb / Zs reading, going to have to be on lo current. [/QUOTE]
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