I have to get a three phase supply to my house the nearest supply is around 150-200 Mtrs. Does anyone no an estimate on price to have this done ?? For the supply and box ?? Any advice would be welcome

We payed 20.000 Bahts for one new pole. Suppose 40-50 m per pole your costs will be around 100.000 Bahts.

We payed 20.000 Bahts for one new pole. Suppose 40-50 m per pole your costs will be around 100.000 Bahts.

just had 3 poles 2 meters and wiring done this week 32850baht estimated 15-20 days for compleation ,done in 9 days

Using 3 phase power especially in a residence, can be dodge unless proper precautions are taken.

We have a problem here on the island not only with brown outs and power loss, but loss of a phase.

Phase loss can burn out motors very fast unless protection devices are installed. The Brown Out (Low Voltage) problem is because there are to many customers connected to one transformer or the wire from your house to the transformer is to small or overloaded, this problem is being addressed slowly by PEA. I will not go in to the details except to say it is a real problem for computers and for your refrigerator. A/C units have anti-recycle timers built into them and are mostly immune from the recycle problems.

The house you described should operate on a 45A single phase meter (yes they have them) you should have a demand load done on your house, but in general, unless everything in the house is running at the same time and starts at one time there should be no problem, the single phase load should be less than 30-40 amps, (average).

A single phase pump is best for a home pool, don't let them tell you 3 phase is cheaper to operate, it is NOT, a watt is a watt and the meter measures watts weather 1 or 3 phase you pay for power used (watts) or as the meter reads Kilo-watts, 1wattX1000=1kw

Don't for get to use energy saving bulbs and the new LED bulbs, Add a Protector to your frig, if you have captive hot water heaters keep the temperature below 40 C.

Keep your A/C filters clean, raise the temperature a degree or two, one degree can save you 8 % on electrical usage.Keep windows and doors closed when the A/C is in use.

Fans can be a real energy saver and can assist the A/C in air distribution.

I will not go in to the details except to say it is a real problem for computers and for your refrigerator

been looking for yonks for someone who knows about this stuff , please help me to help my computer , is a step up transformer the answer ?

Using 3 phase power especially in a residence, can be dodge unless proper precautions are taken.

We have a problem here on the island not only with brown outs and power loss, but loss of a phase.

Phase loss can burn out motors very fast unless protection devices are installed. The Brown Out (Low Voltage) problem is because there are to many customers connected to one transformer or the wire from your house to the transformer is to small or overloaded, this problem is being addressed slowly by PEA. I will not go in to the details except to say it is a real problem for computers and for your refrigerator. A/C units have anti-recycle timers built into them and are mostly immune from the recycle problems.

The house you described should operate on a 45A single phase meter (yes they have them) you should have a demand load done on your house, but in general, unless everything in the house is running at the same time and starts at one time there should be no problem, the single phase load should be less than 30-40 amps, (average).

A single phase pump is best for a home pool, don't let them tell you 3 phase is cheaper to operate, it is NOT, a watt is a watt and the meter measures watts weather 1 or 3 phase you pay for power used (watts) or as the meter reads Kilo-watts, 1wattX1000=1kw

Don't for get to use energy saving bulbs and the new LED bulbs, Add a Protector to your frig, if you have captive hot water heaters keep the temperature below 40 C.

Keep your A/C filters clean, raise the temperature a degree or two, one degree can save you 8 % on electrical usage.Keep windows and doors closed when the A/C is in use.

Fans can be a real energy saver and can assist the A/C in air distribution.

Thanks for your reply

I also have resevations about taking 3 phase electricity so close to my house. Im going to try and run single phase and im hoping i don't need 3 phase im just enquiring about costs if i

need too ? I cant calculate my full house load test at the moment as i am still buying the elctrical goods what i am trying to get is a daikin multi invertor aircon system this should prove more efficient as i have four aircon units and this can be run by one compressor also the halogen lights should help too. Any idea where i would get info on load test calculations from on the net ?? Im a bit confused about the water heaters too. Here in Thailand they have instaneous water heaters Can theses water heaters have pressurised water pump through them ???

The only thing 3-Phase power makes sense for is motors, typically anything over about 500W. The benefit is that you get more torque and less stress on the bearings. You wouldn't usually install 3-phase power unless you had motors over about 5kW, and 3-phase motor loads were about 30% of your total electrical load.

There are a lot of downsides to having 380V power in a house. For starters, arcs are self-sustaining at that voltage, meaning it is much easier to have an electrical fire. Most electricians locally really shouldn't be playing with 380V power-- they just don't have the skills. You can't just randomly mix phase and neutral wires with a three phase system!

As for protecting a computer or refrigerator from undervoltage, the best approach is using an automatic tap changer, which will boost the voltage when it dips. Best to keep them just on critical loads, and let the lights dim if they have to. (Only put one on a computer if you have a UPS; it's just to help reduce the time the UPS spends on battery.)

As for protecting a computer or refrigerator from undervoltage, the best approach is using an automatic tap changer, which will boost the voltage when it dips. Best to keep them just on critical loads, and let the lights dim if they have to. (Only put one on a computer if you have a UPS; it's just to help reduce the time the UPS spends on battery.)

ups couldn't hack it ,

it's boarder line so under light loads the comp is fine , problem sure raises it's head when the computer is asked to do some heavy duty number crunching

overtime this heavy multitasking along with under supply beats the battery recharge capabilities ....................

There are a lot of downsides to having 380V power in a house. For starters, arcs are self-sustaining at that voltage, meaning it is much easier to have an electrical fire.

three-phase in the house does not mean you have any points with 380 volts, i.e. no such things like arcs. all what you have are three lines each 220-240 volts.

a three-phase connection has the advantages that

-you evenly distribute the load of your electric consumers over the three phases

-if one phase goes (happens quite often in my area) two other phases remain

on top of that some homes with a high consumption make a three-phase connection mandatory as nowhere in the world single phase connections -being able to carry a load in excess of 100 amps- (like my home) are installed.