Fused spur from an immersion switch?

[jimk996]

Need to put some power to a small wall mounted electric heater that takes will take it's power from a 5 amp fused switch outlet. It's in a flat and the least disruptive way I can see of doing this is by running a 2.5mm T&E cable from the immersion switch to the 5A switch fused spur then connecting the heater to this. The immersion is on its own 16A radial. I can't see anything that may not comply with regs on this but a colleague thinks different. Anyone provide clarification on this?

thanks

 

[Octopus]

Think about the size of the immersion heater tank capacity and afixed heater and look through the BGB

 

[moose]

Just a quick thought the ON Site Guide gives you a nice percentage page for all this Lights, Sockets, Heaters Etc the name has left my brain...

 

[KAS1]

Here we go yet again I thinks

Need to put some power to a small wall mounted electric heater that takes will take it's power from a 5 amp fused switch outlet. It's in a flat and the least disruptive way I can see of doing this is by running a 2.5mm T&E cable from the immersion switch to the 5A switch fused spur then connecting the heater to this. The immersion is on its own 16A radial. I can't see anything that may not comply with regs on this but a colleague thinks different. Anyone provide clarification on this?

thanks

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Or as they say Jesus wept lol

 

[Deleted member 9648]

Need to put some power to a small wall mounted electric heater that takes will take it's power from a 5 amp fused switch outlet. It's in a flat and the least disruptive way I can see of doing this is by running a 2.5mm T&E cable from the immersion switch to the 5A switch fused spur then connecting the heater to this. The immersion is on its own 16A radial. I can't see anything that may not comply with regs on this but a colleague thinks different. Anyone provide clarification on this?

thanks

If the immersion is used as the sole means of hot water...No...ideally it should remain a dedicated radial
If the immersion is not or little used..(standby if boiler fails)...you could do this by using a 20a 2way grid switch as a changeover switch. Wire it so either the I/H or bathroom heater can be used independantly but not at the same time.

 

[Welchyboy]

Immersion elements are usually around 12A so if conditions permit you could upgrade the main fuse to the circuit to 20A

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[KAS1]

Why would he want to upgrade the circuit to 20A

Immersion elements are usually around 12A so if conditions permit you could upgrade the main fuse to the circuit to 20A

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Too late

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Is this what I'm up against !!!!!!!!!!!!!!!!!

 

[Welchyboy]

Well how much is the wall heater? Does allow much from a 16a if there both in use

 

[Deleted member 9648]

Immersion elements are usually around 12A so if conditions permit you could upgrade the main fuse to the circuit to 20A

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You could indeed.....as long as the I/H was on an FCU and not a 20dp sw. Best practice though is for an IH to be a dedicated radial.

 

[KAS1]

You can't be suggesting what I think you are????

 

[Deleted member 9648]

Why would he want to upgrade the circuit to 20A

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Is this what I'm up against !!!!!!!!!!!!!!!!!

You are what we are up against....explain why he couldnt upgrade to 20a?

 

[Welchyboy]

Why would he want to upgrade the circuit to 20A

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Is this what I'm up against !!!!!!!!!!!!!!!!!

What u on about?

 

[KAS1]

I ask again why would he want to upgrade to 20a circuit?

 

[Deleted member 9648]

I ask again why would he want to upgrade to 20a circuit?

because 12a + 5a = 17a which I think you will find is 1a over the 16a mcb rating.
This is just one suggestion of how he could do what he proposes but it seems beyond your comprehension..

 

[KAS1]

Are you suggesting he piggybacks his wall heater off the immersion circuit lol