Power supply to new build house

[Max Brok]

Possibly I have to pay my own power line from meter to my new house, it is about 400 mtrs.

I have seen a few other houses with small steel poles as support for their power line, also a few 100 mtrs.

But they do not have aircon and/or pump and waterheater for shower. Rest is just a refrigirator, freezer and led lights.

I know these power lines are thick and very stiff. Which kind of lines I should buy ( insulation type, copper,aluminium, steel, thickness) for 400 mtrs?

The poles have a distance of about 40 mtrs.

Do I need 60 amps or 45 amps. Waterheater is max. 3600 Watt and aircon about 3000. Pump 400 watt and occasional a electric waterheater for coffee.

What about earth/ground? Am I to far away of a pole with a aerthpin?

 

 

[Crossy]

400m is a pretty long way for a 220V supply, for a 15/45 meter you are looking at 95mm² cable in copper ($$$) or 120mm² in aluminium (a lot cheaper and less likely to wander off in the night). 

 

Cable type would be THW (copper) or THW-A (aluminium), each wire will be about 20mm in diameter.

 

Will the poles be on your property or along a public road? Usually PEA provide the supply to your boundary (where the meter will be located) although you may have to pay for poles and cable. Once on your property it's your problem.

 

In Thailand you provide your own ground, so no issues with earths.

 

Is the house built yet? Is a "construction supply" in place?

 

Your first port of call should be your local PEA office. Take a Thai speaker and an accurate map of where your plot is located (Google maps is your friend) and indicating your boundaries. They should come up with a solution and a suggestion for a contractor who can do the work. This would often be PEA employees moonlighting - our poles are marked "PEA" and were installed by men wearing PEA uniforms, driving a PEA truck (cash payment to the driver, no receipt, gotta love Thailand).

 

EDIT How far away is the nearest transformer? If it's already a goodly distance you may be looking at needing your own transformer too $$$ ????

 

[carlyai]

Could there be another option in putting the cable underground? Could get a local with a backhoe easy enough, and would get rid of the overhead wiring. Maybe the price would not be much more, but don't know.

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[sometimewoodworker]

5 hours ago, carlyai said:

Could there be another option in putting the cable underground?

I think underground you are limited to copper.

[Rimmer]

I had a similar problem, ended up buying concrete HT poles, three 22kva HT lines and a 50kva transformer, PEA said it is outside of their normal distribution area and if you want power you got to install an HT system.  Cost nearly 1m baht over ten years ago.

Then had to run NYY cable underground inside my property from MY transformer to the house.

[thaiguzzi]

Back in 05 when we built this house, the PEA kindly put 2 concrete full size poles in, just for me, and my very own transformer.

Only cost me a cool 145k...........

[bankruatsteve]

Many PEA will not allow underground for mains supply.  Once on your property, up to you.

[farmerjo]

 

I had 150mm x 150mm x 7000mm concrete poles made at local hardware store for 1500 baht each.

Placed one meter back off edge of rural road(incase they widen road later),33 metres apart and minimum of 700mm in ground.I used a post hole digger and added extra cement to the holes.

Minimum required height of pole is 5.50 metres high,i went 6.30 high to allow for overloaded sugar trucks coming out onto the road.

Say(not to spec) a 15/45 meter,50sq aluminium cable,poles and avr if required you will be looking around 110,000 baht. 

If your going to do it,make it look nice so PEA are happy.

Picture of pole size below.

 

[Max Brok]

Thanks all.

I am afraid it will cost me a lot.

[Crossy]

18 minutes ago, Max Brok said:

I am afraid it will cost me a lot.

 

The only way you will really know is to talk to the supply authority.

 

[Max Brok]

1 hour ago, Crossy said:

 

The only way you will really know is to talk to the supply authority.

 

In those 400 mtrs are 2 other connections but they have a thin line, 10 square mm, on wooden poles. Maybe they want to cooperate to go to the PEA. But I know Thai people do not like to pay because they are satisfied with the present situation.

[Crossy]

The important bit is where the other meters are located, that will be the end of PEA responsibilty. It wouldn't hurt to get the reference numbers off the meters too, the more detail you can give PEA the better.

 

[Max Brok]

I understand it very well because you explain superb.

 

Thanks Crossy for the number of issues you helped me in the past. Tomorrow I go to Thailand to build my house during next 3 months. Again a adventurer above 65 of age.

[farmerjo]

The biggest thing i ever thought about was liability when running a cable off the end of the grid.

[tjo o tjim]

Rule of thumb on poles is 600mm embedment plus 10% of the height.