Discuss Zs measurements in the Cert column in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net
What would you put.and see if can get correct.what Max Zs would you put in the column for Max measurement for the MCB
Are you testing TT or PME.I would put 1666 for the Rcd measurement & the normal Zs measurements for the MCB’s
PME CheersAre you testing TT or PME.
in your tick box for Max measurement tested.
Well that’s the dilemma & some disagreement here… To be fair I’ve seen both measurements recorded on Certs… personally I prefer the Zs for the MCB, with the 1666 only for the MCB1667 ohms for any circuit protected by a 30mA RCD
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