N
nadger
We have been doing as little bit of remedial work and indentifying circuits on a new build that the original electrician has been binned from. I wont go on about the things we've found as that is not why im posting.
The owner has a grown up disabled son who likes to be "in to everything", pretty much just as a small boy would be. As the induction hob is easy to turn on by simply holding your finger down on the on sensor, the owner uses the 45a dp switch to isolate the hob everytime he's finished cooking so to stop his son hurting himself.
The problem im looking for help with is this: Most times when turning the 45a dp off, the RCD trips out on the board. We have tested and visually inspected the 6mm T+E supply, re-terminated all connections, replaced the 45a dp switch, even swapped the rcd's over from each side of the board etc etc but the problem still remained. The only error i could find was the original spark had crossed his nuetrals over on the 45a switch. The tripping stops when i removed the hob's flex from the circuit completely, so logic tells me the supply is fine and its the hob causing the problem.
The hob is only a few weeks old so i would be suprised if a top make such as NEFF is faulty. However NEFF are sending out an engineer on Tuesday to check their unit.
If he says its fine then it would appear that the complex electronics in this induction hob are the cause of the nuisance tripping. If this is the problem i am hoping one of you will have come across such an instance previously, and can offer some advice?
Due to the situation with the disabled son the hob must be isolated, what options do i have that will provide local isolation and not trip the rcd out everytime, yet still comply with the regs?
The owner has a grown up disabled son who likes to be "in to everything", pretty much just as a small boy would be. As the induction hob is easy to turn on by simply holding your finger down on the on sensor, the owner uses the 45a dp switch to isolate the hob everytime he's finished cooking so to stop his son hurting himself.
The problem im looking for help with is this: Most times when turning the 45a dp off, the RCD trips out on the board. We have tested and visually inspected the 6mm T+E supply, re-terminated all connections, replaced the 45a dp switch, even swapped the rcd's over from each side of the board etc etc but the problem still remained. The only error i could find was the original spark had crossed his nuetrals over on the 45a switch. The tripping stops when i removed the hob's flex from the circuit completely, so logic tells me the supply is fine and its the hob causing the problem.
The hob is only a few weeks old so i would be suprised if a top make such as NEFF is faulty. However NEFF are sending out an engineer on Tuesday to check their unit.
If he says its fine then it would appear that the complex electronics in this induction hob are the cause of the nuisance tripping. If this is the problem i am hoping one of you will have come across such an instance previously, and can offer some advice?
Due to the situation with the disabled son the hob must be isolated, what options do i have that will provide local isolation and not trip the rcd out everytime, yet still comply with the regs?
