Regulations are a guidance not laws, in the Regs themselves it's stated use common sense.
Like I said above which I hope you read and if you have done any testing and inspection one of the things to note on your certificate if there's a dual supply you need to have to put a yellow sticker of...
Thank you for the reply. I have already taken care of the technical side which your questions are pointing to.
Both conditions above are satisfied.
Both cables are can run alongside each other.
The thermostat cable is shielded so no interference and it is designed fort he job.
My question is can...
Hi 64sp, I am sure this forum is leaving you more confused than when you started.
The illustrious members of this forum with to many answers have a strong Domestic installations bias.
You will need a Commercial electrician to do your job not a Domestic one or one who is experienced in both...
4 separate immersion heaters on one unit.
When you hit the isolator you expect that unit to be off not is there anything else I have to switch off?
It is just bad practice to do that.
Have you ever come accross the yellow label "Caution fed from elsewhere, dual supply" ?
From memory an electrical point should be at least 150mm away from services of any type. 300mm is above the counter as mentioned above.
Blanking is usually enough.
Out of curiosity are you replacing oven and hob from electric to gas, is it two separate units hob and oven or one unit made of oven...
You don't need four radials. One is needed as long as it's able to carry the load of all 4 and that will supply 4 contactors, then each contactor will supply each element.
4 radials would make it dangerous.
From a Regs point of view, is it allowed to run a thermostat cable(bell cable) inside the same outlet as the boiler flex outlet?
In the picture attached the twin and earth does the flex outlet point for the boiler and on the right there's the bell cable doing the thermostat.
My question is...
From your description you have a single phase water heater with 4 individual elements. This should have been more suitable on a three phase supply type of water heater.
But three phase supply is not so common on domestic installations.
The nature of your power supply should have determined what...
Ok, lol. The long answer would be 24V is low voltage no need to run twin and earth or power cable fit to carry up to 600V. Low voltage cable would be enough.