Wiring in a combo boiler

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I'm doing the wiring in a new build to be Part P tested afterwards.
We're having a Baxi combo boiler installed. The wiring says it needs to be
"3amp 230v 50Hz supply control using cable of 3 core .75mm 3183Y multiple flexible type"
Plan is to run a separate supply off the consumer unit to a switched socket with a 3amp fuse, standard circuit cable to the socket then cable to the boiler.
Does that sound right, or am I missing something?
 
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You can do that or use a spurred Fuse connection unit preferably with a switch, there is no need to have a radial circuit just to feed the boiler
 
I'm doing the wiring in a new build to be Part P tested afterwards.
It doesn't work like that.
If any of your work is notifiable to the Building Control; new circuits are, then
that must be done before the work commences and they will decide if you are deemed competent,
OR
you could employ a registered electrician who is willing to supervise your work throughout - or do it himself, of course.

We're having a Baxi combo boiler installed. The wiring says it needs to be
"3amp 230v 50Hz supply control using cable of 3 core .75mm 3183Y multiple flexible type"
Ok.
Virtually any flex will do.

Plan is to run a separate supply off the consumer unit to a switched socket with a 3amp fuse, standard circuit cable to the socket then cable to the boiler.
Yes, if that's what you want.
Whether the socket is switched or not is irrelevant.
The fuse will be in the plug.
Or you could use a Fused Connector Unit.
 
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No such thing as a Part P test. Part P is a building regulation, nothing else.
 
As well as the supply, be it a socket or a FCU, it is likely you will also need some control cables, one of the Parts of Building control covers energy and today a boiler needs to be configured so you can select what areas it heats, be it motorised valves, or electronic TRV heads which are really motorised valves, there will need to be some control.

The easy way is fit Honeywell EvoHome which has been out for a good few years and is known to work well, but expensive, there are many other methods, Hive, Nest, Tado and many more make systems so you can control each room.

Most use wifi to connect, but there will likely be some hard wired connection into the boiler, be it 230 volt 24 volt or varying voltage to the boilers ebus there will likely be more than just the mains supply to the boiler.

If it was not a new build then it could use the return water temperature of the boiler, it still may be allowed? you may get away using stand alone programmable TRV heads, but clearly you need to find out what will be passed by the building inspector before you wire up. Also make sure the building inspector knows what work is being done by non scheme members, you can DIY, but you must have said that when first filling in the forms.
 

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