Hi everyone
Ive been helping out with some testing on a job on at moment. Today noticed a plug from a fan was overheating and melting socket. This appliance is plugged into rcd protected sockets which are fed from electrak run underneath floor. At moment everything points to faulty appliance although was informed this had been recently pat tested although there was no sticker on it. I tested sockets and confirmed only 230v present. MCCB rating is 32A and wiring is 6mm both phase CPC. This did get me thinking though that in circirmstances where electrak or for that matter any other circuit is incorrectly wired and a phase (say L1) from one circuit is incorrectly cross connected into another circuit fed from (say L2) thus creating 400v on circuit 2 at what point in testing process should this show up. If R1 + R2 results seem quite satisfactory with the length of cable that you have been advised is wired in. I cant see how an IR detects this and to be honest I'm not sure if ZS test does either (would appreciate if anyone can clarify this) . Thanks
.
Ive been helping out with some testing on a job on at moment. Today noticed a plug from a fan was overheating and melting socket. This appliance is plugged into rcd protected sockets which are fed from electrak run underneath floor. At moment everything points to faulty appliance although was informed this had been recently pat tested although there was no sticker on it. I tested sockets and confirmed only 230v present. MCCB rating is 32A and wiring is 6mm both phase CPC. This did get me thinking though that in circirmstances where electrak or for that matter any other circuit is incorrectly wired and a phase (say L1) from one circuit is incorrectly cross connected into another circuit fed from (say L2) thus creating 400v on circuit 2 at what point in testing process should this show up. If R1 + R2 results seem quite satisfactory with the length of cable that you have been advised is wired in. I cant see how an IR detects this and to be honest I'm not sure if ZS test does either (would appreciate if anyone can clarify this) . Thanks
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