Fused spur from an immersion switch?

J

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
 
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...
 
Here we go yet again I thinks
jimk996 said:
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
Click to expand...

- - - Updated - - -

Or as they say Jesus wept lol
 
jimk996 said:
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
Click to expand...
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.
 
Last edited by a moderator:
Immersion elements are usually around 12A so if conditions permit you could upgrade the main fuse to the circuit to 20A

- - - Updated - - -
 
Why would he want to upgrade the circuit to 20A
Welchyboy said:
Immersion elements are usually around 12A so if conditions permit you could upgrade the main fuse to the circuit to 20A

- - - Updated - - -

Too late
Click to expand...

- - - Updated - - -

Is this what I'm up against !!!!!!!!!!!!!!!!!
 
Welchyboy said:
Immersion elements are usually around 12A so if conditions permit you could upgrade the main fuse to the circuit to 20A

- - - Updated - - -
Click to expand...

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 said:
I ask again why would he want to upgrade to 20a circuit?
Click to expand...

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..
 
For ****s sake dedicated circuits don't count for anything anymore are you thick
wirepuller said:
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..
Click to expand...
 
KAS1 said:
For ****s sake dedicated circuits don't count for anything anymore are you thick
Click to expand...

If you read all my replies on here I think you will find I've recommended a dedicated circuit all along....but if cable ratings and load allow there is no reason why he cant use the IH circuit for what he intends. In fact I have given a practical means for the circuit being dedicated to either the IH or wall heater.
Insults will get you a ban BTW.
 
I take it you've never installed in a real world scenario

wait till you've finished your 5 weeks in that plywood bay and then come back on here!

troll alert!
 
I just had to re-read the question to make sure I had read it correctly and yes I have, now come on lads, think about what you are suggesting, the immersion heater is a dedicated circuit is it not?
 
****ing bodgers that's all I can say you do it if you must but don't advise others
Welchyboy said:
I take it you've never installed in a real world scenario

wait till you've finished your 5 weeks in that plywood bay and then come back on here!

troll alert!
Click to expand...
 
KAS1 said:
I just had to re-read the question to make sure I had read it correctly and yes I have, now come on lads, think about what you are suggesting, the immersion heater is a dedicated circuit is it not?
Click to expand...

Explain the reason why that is set in stone in your world.

- - - Updated - - -

KAS1 said:
****ing bodgers that's all I can say you do it if you must but don't advise others
Click to expand...

Please give a technical explanation to back up your assertion.
 
QUOTE=wirepuller;688437]I'm still waiting for your technical explanation of why any of the proposed solutions are unacceptable.[/QUOTE]

It seems you are to wait a while yet,it's getting tiresome this waiting game lol
 
I really hope the admins / mod's don't see this...providing my entertainment for the night.

Wirepuller you've got ure hands full here buddy lol!
 
KAS1 said:
So why not put immersion heaters on the ring main?
Click to expand...

The whole idea of a RFC is for portable and transient loads....an immersion heater is a fixed load over 2KW for which the regs recommend...(note recommend) a radial. An immersion heater therefore should be on a radial.....but not all radials have to be dedicated to one load.
 
KAS1 said:
Have you any idea why immersion heaters are allocated their own circuit?
Click to expand...

Have you?....I'm still waiting for you to provide a plausible technical explanation as to why a 12a IH and a 5a heater cant be on a 20a radial assuming cable sizes are adequate.
Please explain why an IH MUST be completely dedicated.
 
Well KAS! has presumably gone to write up his techo explanation and I'm bored....nite all.:waving:
 
markc123 said:
we need a bouncer, sintra on the prowl lol
Click to expand...


Guys, I thought it might raise a few answers this one... me & my colleague had a more democratic debate but I respect your honest opinions and can understand KAS1's passion but think we should tone it down?
 

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Fused spur from an immersion switch?
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