Called out to fault on RCD tripping maybe twice in a month for sometime.
Did all the tests & found RCD was faulty, Refitted a new Rcd Type A which made matters worst.
So refitted original RCD Type AC for the time being.
Insulation Resistance measurements were 20 M ohms.
Ring continuity fine too.
Testing proved difficult because of RCD tripping even with my Socket Tester, then everything went back to normal, power back on & days later still on.
Obviously Client not happy & believe’s ive done something.
The DB is a Stack DB,Crabtree Starbreaker all cabling brand new.
Its Split between Top & Bottom Main Switch mcb’s
Bottom RCD 30ma 80amp supplying 5 Ring Mains & 3 other Radial circuits MCB’s
i think I narrowered it down to-the kitchen/dining RM & UNPLUGGED all equipment but doing this the RCD still tripped.
Fingers crossed no call outs over Xmas… returning after hols … Any ideas fellow Sparkies
Did all the tests & found RCD was faulty, Refitted a new Rcd Type A which made matters worst.
So refitted original RCD Type AC for the time being.
Insulation Resistance measurements were 20 M ohms.
Ring continuity fine too.
Testing proved difficult because of RCD tripping even with my Socket Tester, then everything went back to normal, power back on & days later still on.
Obviously Client not happy & believe’s ive done something.
The DB is a Stack DB,Crabtree Starbreaker all cabling brand new.
Its Split between Top & Bottom Main Switch mcb’s
Bottom RCD 30ma 80amp supplying 5 Ring Mains & 3 other Radial circuits MCB’s
i think I narrowered it down to-the kitchen/dining RM & UNPLUGGED all equipment but doing this the RCD still tripped.
Fingers crossed no call outs over Xmas… returning after hols … Any ideas fellow Sparkies
