B
b0nes
hi all.
i may be completely wrong but on a tn-c-s system if i was testing at say a lighting point, lighting circuit breaker off but main switch on then i would have continuity between neutral and cpc, right? but then by my reckoning if i were to then open the main switch then the continuity would be broken due to the neutral going open circuit, also right? its just i have read that IR readings could be measured wrong if the neutral for the given circuit is not removed from the neutral bar when testing IR, is this true? and why would this be a problem if the main switch was open?? sorry am just learning and a bit confused....any help/thoughts would be great
i may be completely wrong but on a tn-c-s system if i was testing at say a lighting point, lighting circuit breaker off but main switch on then i would have continuity between neutral and cpc, right? but then by my reckoning if i were to then open the main switch then the continuity would be broken due to the neutral going open circuit, also right? its just i have read that IR readings could be measured wrong if the neutral for the given circuit is not removed from the neutral bar when testing IR, is this true? and why would this be a problem if the main switch was open?? sorry am just learning and a bit confused....any help/thoughts would be great