Dedicated circuit for immersion heater

[Ian1972]

Hi, I know it's best practice to run an immersion on a dedicated circuit but am I OK with the following

A new heat pump is being fitted and it has a wiring centre in the airing cupboard next to the cylinder, the wiring centre requires a 3A switched spur to power the circuit board a diverter valve and a small contactor for the immersion heater, there is a comms cable from the outside heat pump that tells the wiring centre to control the diverter valve (heating or hot water)and once a week turns on the immersion heater contactor to disinfect the cylinder "legionella cycle"

My question is can I use the immersion heater supply cable to power both with a 20A DP switch for the immersion and 13A switched spur (3A fuse fitted) for the wiring centre or do I need to run a new supply or spur of a local ring for the switched spur

Thanks in advance

 

[mattg4321]

Why would you not be able to?

 

[buzzlightyear]

My question is can I use the immersion heater supply cable to power both with a 20A DP switch for the immersion and 13A switched spur (3A fuse fitted) for the wiring centre or do I need to run a new supply or spur of a local ring for the switched spur

Loading on that lot.

 

[Ian1972]

Loading on that lot.

The loading isn't an issue 13 amps for the immersion and the wiring centre takes less than 1 Amp only 14 amps on a 16A mcb

 

[buzzlightyear]

The loading isn't an issue 13 amps for the immersion and the wiring centre takes less than 1 Amp only 14 amps on a 16A mcb

If you know what you are doing why ask the question in the beginning.

 

[littlespark]

You’ve not got an “immersion heater supply cable”

You’ve got a radial circuit.

What you put on the end of it is up to you…. As long as the circuit is suitable for the load.
(OCPD, cable size, installation method)

 

[Ian1972]

If you know what you are doing why ask the question in the beginning.

Because the Daikin engineer has said that the immersion has to be on a dedicated circuit and I can't piggyback the control panel off the same cable

 

[cliffed]

If it’s not possible to supply elsewhere then connect to the IH circuit, keep him happy label it… after all its a radial circuit dedicated for both now