Discuss Fusing of fans to comply with manufacturers recommended instructions in the Electrical Forum area at ElectriciansForums.net
A lot of lighting manufacturers do exactly that.If manufacturers want a 3a fuse, why don't they bloody well fit one inside the fan. Bloody irritating this!
IMO if there is a 3a fuse on the permanent line then it complies with manufacturers instruction. The switched live is only a trigger, the fan uses the permanent line to operate so a fuse on that line will serve the purpose intended.Manufacturers want there fans fused to 3a on the permanent feed but the switch wire is still on the 6a MCB doing an eicr is a c2 if there is no RCD protection
I assume you mean as it in a bathroom or because the cable is buried in the wall? C3 for both if to a previous edition of the regs ie full supplementary bonding was in place if not C2.
Switch left on is a supply to the timer at a higher rating than the feedIMO if there is a 3a fuse on the permanent line then it complies with manufacturers instruction. The switched live is only a trigger, the fan uses the permanent line to operate so a fuse on that line will serve the purpose intended.
The motor runs on the permanent line though, it wont run at all just on the switch line.Switch left on is a supply to the timer at a higher rating than the feed
Some time back there was an instance of one of these fans causing a fire, presumably it seized. It ended up in court and the manufacturers gettout was that a 3a fuse had not been fitted as per instructions. This despite the fact that we all know a 3a fuse would make no difference.I’m sure this has been said before but
I’ll do it again…
A 3amp fuse on a (usually lighting) circuit that is protected by a 6amp MCB is pointless. The MCB will trip a long time before a 3A fuse will pop.
I’ve a feeling the 3A thing originally came from when the fan may be powered from something like a ring final which has a much higher current rating.
Some time back there was an instance of one of these fans causing a fire, presumably it seized. It ended up in court and the manufacturers gettout was that a 3a fuse had not been fitted as per instructions. This despite the fact that we all know a 3a fuse would make no difference.
Hi - sorry to be a party pooper, but a BS1363 3A fuse is more sensitive to overload than a BS60898 6A mcb. For example, the 3A fuse will always melt at 6A but the mcb will never trip.
View attachment 48822
Just put the respective lighting circuit on a 3a MCB
Reply to Fusing of fans to comply with manufacturers recommended instructions in the Electrical Forum area at ElectriciansForums.net
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