View the thread, titled "Fused spur from an immersion switch?" which is posted in Electrical Wiring, Theories and Regulations on Electricians Forums.

So why not put immersion heaters on the ring main?

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.
 
Have you any idea why immersion heaters are allocated their own circuit?

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:
 
we need a bouncer, sintra on the prowl lol


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?
 
Sounds good to me
2.5 T+E
change MCB to 20A CHECK MAX Zs
2 items on 1 radial NICE
is heater in bathroom RCD protection ?
NO WORSE THAN 4 DOUBLE SOCKETS ON A 20A 2.5 RADIAL
 
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.


Wirepuller ... this wouldn't comply regarding the 2way switch method as it would fall foul of 554.3.3 unless you were to have a double pole switch also which you failed to make clear in your suggestion.
 
Hi Inverter, heater in living area but thanks for that input.... as all comments are thanked
 
This thread is another good example why the plain english society needs to proof read the next edition of the regs.

Immersions on dedicated radial
 

Reply to the thread, titled "Fused spur from an immersion switch?" which is posted in Electrical Wiring, Theories and Regulations on Electricians Forums.

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