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Discuss A thought about fuses in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

Whilst the cabling is adequately protected at 13A, the vast majority of manufacturers have always specified a 3A fuse to protect the boiler.
As far as I am aware manufacturer,s only seem to get away with this in Ireland and the UK only.In other countries manufacturers are expected to take care of this issue themselves by fusing the appliance internally
 
One issues is if both the permanent and switched lives both need fused. Really someone should slap down on this and say that anything falling in to those categories has to be designed as safe with a 6A MCB.

I've fitted maybe two dozen fans in the last couple of years and all were safe on a 6A circuit.
 
One issues is if both the permanent and switched lives both need fused. Really someone should slap down on this and say that anything falling in to those categories has to be designed as safe with a 6A MCB.

Absolutely. And it shouldn't be difficult to be honest. Let's face it, most fans will be fine on a 6A device - it's just some over cautious manufacturers covering themselves.
 
If you look inside the motor's wire will blow before a 3A fuse, and that won't stop it overheating if locked either locked rotor current is going to be fraction of an amp. So really is is just looking for a weasel way out of any claims...
Thats a very interesting point .It would explain why these very same fans are installed all over the continent and are protected ,not by a 3 or 5 amp fuse ,but by the 16 amp circuit mcb.
 

Reply to A thought about fuses in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

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