My daughter has grown up and left us so the world won't end.If you have a circuit with an immersion and CH and a shower pump on it and something goes short circuit, potentially you'll lose all three.
My daughter has grown up and left us so the world won't end.If you have a circuit with an immersion and CH and a shower pump on it and something goes short circuit, potentially you'll lose all three.
Indeed. In fact, ten 3kW heaters could be plugged into a radial socket circuit if (quite acceptably) that circuit had five double sockets. However, it is the thankless task of the designer to use a crystal ball and make guesses about the 'likely' use of the circuit.In theory, two 3kW heaters could be plugged into a radial double socket...
. Well, the Wiring Regulations are not law, and therefore cannot 'outlaw' anything. However, the IET's On-Site Guide, a companion publication to the Wiring Regulations proper.certainly recommends that an immersion heater has a circuit entirely to itself.So long as it is only theory and the rules don't actively outlaw connecting small loads to the immersion circuit it must surely be the preferred method?
That is not a precedent. The Wiring Regs make specific provision for a single socket to be run off a cooker circuit, and specify modified diversity calculations for the circuit if auch a socket is present.Precedence is that a cooker outlet usually has a 13A socket.
My daughter has grown up and left us so the world won't end.If you have a circuit with an immersion and CH and a shower pump on it and something goes short circuit, potentially you'll lose all three.
Well, the Wiring Regulations are not law, and therefore cannot 'outlaw' anything. However, the IET's On-Site Guide, a companion publication to the Wiring Regulations proper.certainly recommends that an immersion heater has a circuit entirely to itself.
It is your prerogative, as designer, to make such design decisions. The only requirement is that the designer must be able to justify their decisions as being reasonable and safe, and it sounds that you feel you could.Excellent. In 15 years the only time the immersion heater has ever been used is when the central heating has been down for maintenance. Adding the shower pump to the immersion heater circuit it is then.
And what the regulations say is to not put immersion heaters on a ring final circuit.The OSG suggest putting immersions on their own circuit, the regs don't mention it, save for the "new" appendix concerning appliances >2kW.
True.As to location of pump, surely the consideration should not be it's height relative to the DHW cylinder, but relative to the water in the header tank ?
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