Fused spur timer

[Andy™]

sounds good. you can also get 5A fuses easily

 

[steptoe]

well you do have a few fuse sizes between 3a and 13 a to go for depending on power.

 

[Riggy]

Surely you'd select the fuse rating relative to the cable size rather than the load?

If I fed a 3kW heater with 0.5mm flex would you fit a 13A fuse?

 

[steptoe]

well at least he is going to fuse it down to some extent,

like good manners,

good practice goes a long way.

 

[alchemist]

The flex to the towel rail is at least adequate for the power rating of the rail. (If it's not, it would melt in use under no fault conditions)

So fusing to the power rating of the towel rail will cover me for the flex, which is after all what the fuse is protecting.

Everything upstream of the FCU is ring main and protected by the MCB.

I've got some 3A, 5A and 13A fuses - but I don't know the exact rating of the rail yet.

Thanks for all the responses.

---------- AUTO MERGE Post added at 22:50 ---------- Previous post was at 22:41 ----------

Surely you'd select the fuse rating relative to the cable size rather than the load?If I fed a 3kW heater with 0.5mm flex would you fit a 13A fuse?

You wouldn't feed a 3KW heater with 0.5mm flex. 0.5mm flex can only carry 3A, you'd either have blown fuses every time the heater was turned on or melted flex.

 

[Lurch]

Surely you'd select the fuse rating relative to the cable size rather than the load?If I fed a 3kW heater with 0.5mm flex would you fit a 13A fuse?

That's just arguing for arguments sake. Might as well apply the same logic to every thread and assume not one part of the job is right and basically make the forum completely pointless.