K
Discuss IR Tests & Fault Finding in the UK Electrical Forum area at ElectriciansForums.net
Hi fellow electricians,
I'll get straight to the point.
How low do the readings for an IR test need to be on 250V or 500V scale before a 30mA RCD or 32A MCB trips when the circuit is live and in operation and where would I find that information? I know it will trip straight away with a dead short but if I get 50M ohms for example on the dead test and then liven the circuit up is it likely to trip after a certain period of time?
Also why does the RCD or MCB not trip straight away? What factors affect the circuit to the point that the RCD or MCB decides it's time to trip if there is not a dead short and there is no faulty appliance?
Finally, can someone confirm that the best way to find the furthest point on a ring in which to split the circuit in half is the socket with the highest Zs.
All contributions are appreciated
Many thanks
I'm intrigued. Your website offers a complete range of services including fault-finding, installations, testing, the whole 9 yards. Is this your company? Daz
Well done Fatha, you get today's award for ancient thread resurrection
Holy resurrection batman.
I thought we had to wait 'till tommorow for that!!!
my comments in red.
one of my fav. tracks. i want it played at my funeral.
You'll have to die first!
Old lass next door to me had Bat Out of Hell for hers!
Probably closer to 9Ω (0.009MΩ)
Reply to IR Tests & Fault Finding in the UK Electrical Forum area at ElectriciansForums.net
We get it, advertisements are annoying!
Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.