If normal earth leakage detection level is 30mA, this probably is based on average 'dangerous current' ?
But when several offices are fed from a single earth leakage detector, it is not appropriate for one user to bring all parallel users down, by merely adding 5 mA extra leakage, to increase the total from 26mA to 31 mA.
Do earth leakage detectors exists which only react to an INCREASE in earth leakage ?
What are these 'self tuning' ELDs which I read about ?
Thanks for any info.
== Chris Glur.