Fused spur for storage heater

[MartinH]

Hi, If a storage heater has its own dedicated supply from an RCBO on the CU does it also need a fused spur? Thanks, Martin.

 

[mainline]

Hi, If a storage heater has its own dedicated supply from an RCBO on the CU does it also need a fused spur? Thanks, Martin.

As long as the rcbo is of the correct current rating then no.
A 20amp isolation switch instead of the fused spur in that case.

 

[MartinH]

Thank you

 

[Jock from the north]

Hi, if the storage heater has a duel supply then normally the convector side ie 24hrs supply should be fused to 13 amps as its normaly 2kw depending on size of heater .off peak side should be a 20 amp dp switch fed from 16 amp mcb /.rcbo fusing down the off peak side will eventually overheat the fuse /switch.same as 3 kw immersions

 

[westward10]

Bad idea to run an immersion through a fused spur especially with the dire quality of accessories available today regardless of the manufacturer.

 

[James]

Bad idea to run an immersion through a fused spur especially with the dire quality of accessories available today regardless of the manufacturer.

I agree but,
Its a real shame that we have to advise people that running any device at its rated current for long periods of time is likley to break it.

how do you think ford would get on if they recommended that you don't run there family car at 70Mph for long periods of time as it may overheat and fail prematurely!!

 

[Jock from the north]

Bad idea to run an immersion through a fused spur especially with the dire quality of accessories available today regardless of the manufacturer.

on a side note to that i remember connecting up a 3kw immersion a good few years ago when the manufactures stated a 13 amp switched fuse must be used .i didnt .you can hold your finger on the fuse holder and feel it heating lol

 

[PirateKing]

Hi, If a storage heater has its own dedicated supply from an RCBO on the CU does it also need a fused spur? Thanks, Martin.

If you mean the spur of a dual supply LOT20 storage heater then save the messy wall chasing for the spur and convert the E7 box over to 24hrs instead and use the single supply option for the heater. Theses LOT20 heaters have timers which you need to set to the whole house supply E7 switching times. Then they have timers when to let the heat out. I am very pleased with my new ones.