Discuss 110 metre submain for 4/5 bed new build? in the Electrical Forum area at ElectriciansForums.net

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I just got an email from the guy. This is the only info i have. I know nothing about whats on site whatsoever so can't comment further .It reads as follows;


I need to put in 5 supplies. One each for the 3 units - these will all be say 3 bed, and no electric heating or showers. They each have a cable run of 75 metres.
One run needs to go to the house - this will be about 110metres, and it will be a 4/5bed house.
The other one needs to go to the sewage treatment plant, which is again about 120 metres, but only needs to run a 200 Watt pump.
Everything single phase.

Why would this be preferable to getting the board in to give new supplies?
 
close, but VD for lighting is 3%, so i'd err on the side of caution. better to install a slightly oversized cable than have to dig out and replace an undersised one.

i got 70mm based on 80A demand.

5.6V drop.

Just a guess at 50mm, close though damn!!!LOL
 
I just got an email from the guy. This is the only info i have. I know nothing about whats on site whatsoever so can't comment further .It reads as follows;


I need to put in 5 supplies. One each for the 3 units - these will all be say 3 bed, and no electric heating or showers. They each have a cable run of 75 metres.
One run needs to go to the house - this will be about 110metres, and it will be a 4/5bed house.
The other one needs to go to the sewage treatment plant, which is again about 120 metres, but only needs to run a 200 Watt pump.
Everything single phase.

Why would this be preferable to getting the board in to give new supplies?

you need a site meeting mate and deisgn it correctly, also submains are cheaper than paying the dno
 
For the big cables, ask the DNO for a quote if you agree to dig the trench for them, or use a contractor they normally use such as Murphy or similar.
 

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