Electrical wiring layout

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Hello

We are building an extension and we are missing a ton of other plans and specifications, including electricity. How many power sockets in each room, where, how many light appliance points, where, consumer units and all that, maybe even ethernet wiring at the same time and also co-axial TV points. All these wires have to run somewhere and installed during plastering or even before?

Is there a standard way to specify this ? I will try and speak to an electrician if I find one to ask their opinion but am also asking here for opinions.

Thanks
 
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Hello

We are building an extension and we are missing a ton of other plans and specifications, including electricity.
Plans etc are produced by the person who designs the extension. Who designed yours? Why hasn't he done the job you paid him to do, properly?


How many power sockets in each room, where
How many do you want, and where do you want them?

Best bet is to have the number you want, in the places you want them.

Not sure why you think anybody here would know better than you.


how many light appliance points, where,
Lights usually go on the ceiling and/or walls, but depending on the type of room floor- or table-standing lights may also be appropriate.

Switches go on walls next to doorways.


consumer units and all that,
Typically only one for a house, unless it's large. Presumably you already have one.

Not sure why you think you'd prefer a second one for the extension.


maybe even ethernet wiring at the same time and also co-axial TV points.
Maybe.

Do you want those things?


All these wires have to run somewhere and installed during plastering or even before?
You don't think that "during" might upset the plasterer?


Is there a standard way to specify this ?
Yes.

Better to sit with the electrician and a copy of the plans and talk through it and let him annotate them.


I will try and speak to an electrician if I find one to ask their opinion but am also asking here for opinions.
There's no "if" - you are going to have to use one.
 
OK thanks for the reply.

The work is extensive so all old electrics and most plumbing will be stripped out. New rooms and spaces will be created and many old rooms demolished / changed.

We do not so far have plans as to where all the electrics/plumbing will go. Having read your other thread and your suggestion, looking at the floor plans I could sit down and indicate where I would want, or would imagine I want, power sockets, switches, lights, the consumer unit, even in the kitchen I'd have a good idea where appliances might go, but not 100% certain however. I will have to sit down with the electrician, or "a" electrician regardless who in the end the builders bring in?
 
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We do not so far have plans as to where all the electrics/plumbing will go.
Only you can produce, or provide the necessary input to, those plans.


I will have to sit down with the electrician, or "a" electrician regardless who in the end the builders bring in?
No - you sit down with the electrician who will be doing the electrical work, whether he be "yours" or "the builder's".

Who is project managing all of this?
 
This (non-exhaustive) list may help you concentrate on what might be important to you.
https://www.diynot.com/wiki/Electrics:How-many-sockets-and-circuits-should-I-have

As BAS says, who is Project Managing this? If you are not able to do this, pay someone to do it for you. It will save you money.
You MUST get final never ever to be changed plans of everything that is required.
Your tradespeople can only carry out your requirements.
Do not let them decide for you. That way lies nightmares.

Do not change your mind after work starts. That equates to you opening your wallet and saying "Help Yourself".
 
Who is project managing all of this?

Unfortunately, myself for the time being. I wanted to employ the structural engineer in a supervising capacity, but he has been very busy and hard to reach lately.

Only you can produce, or provide the necessary input to, those plans

Yes, I get that, and I have a pretty good idea where I want things to go, so I think for practical purposes I will simply indicate switches and light/power sockets in a floor plan. I have a pretty good idea for the bedrooms, a good idea for the bathrooms, and for the kitchen I only am sure where the sink goes (under the window) but not so sure about cooker and appliances as we have not designed a kitchen yet.
 
Unfortunately, myself for the time being. I wanted to employ the structural engineer in a supervising capacity, but he has been very busy and hard to reach lately.
But does he have PM skills? Do you?


Yes, I get that, and I have a pretty good idea where I want things to go, so I think for practical purposes I will simply indicate switches and light/power sockets in a floor plan. I have a pretty good idea for the bedrooms, a good idea for the bathrooms, and for the kitchen I only am sure where the sink goes (under the window) but not so sure about cooker and appliances as we have not designed a kitchen yet.
But you will have done the design before any work starts, won't you?
 
But you will have done the design before any work starts, won't you?

I will have to either trust the IKEA designer which I have done already and have a good (but not perfect) idea of where to put things, or get a kitchen designer in from some company that he will also have ideas. I will start looking now then...
 
maybe even ethernet wiring at the same time and also co-axial TV points.

Those items are best left to specialists in those fields not electricians. Many electricians know little about RF.
 
I will have to either trust the IKEA designer which I have done already and have a good (but not perfect) idea of where to put things, or get a kitchen designer in from some company that he will also have ideas. I will start looking now then...
The point is not who you do, or do not trust, or how many different people you ask for design ideas.

The point is to not start building work until you have a design with which you are happy, irrespective of who was responsible for it.

Note this:
Do not change your mind after work starts. That equates to you opening your wallet and saying "Help Yourself".
and the questions about project management. Any project manager will tell you that change control is where you make your profit. Obviously in reality it is very difficult to avoid wanting changes part way through, but you must never need them - any changes must be "It would be nice to...", and then you can decide whether the niceness is worth what the contractors want for them. If you hit an "It is essential that..." then they have you over a barrel.
 

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