Thai Dhupp and Princess Joy's Thai House Build

[Neverna]

the tranformer is 1-phase (obviously 50 kVA)

ThaiDupp says it's the third one in on his spec sheet, so it's 30 kVA.

30kVA. Approx 130A. I think.

The spec sheet says the low voltage side (output) is rated at 65.22 amps.

[Neverna]

The spec sheet says the low voltage side (output) is rated at 65.22 amps.

^ But that is at 460v. The Thai voltage will be at or near 230 volts, which works out at 130 amps - as Maanaam posted.

[Airportwo]

Indeed, I think you can run every conceivable electrical appliance throughout the property simultaneously with no problem.

I'm no electrician - but, wouldn't the cables going into the house need to be rated high enough to carry a high (very!) that this would be, totally unnecessary I know but seems they would be the weak point?

[Thai Dhupp]

I'm no electrician - but, wouldn't the cables going into the house need to be rated high enough to carry a high (very!) that this would be, totally unnecessary I know but seems they would be the weak point?

The PEA are laying the cable into the house and everything's on a 5 year warranty (incl that transformer) so I would hope they will 'balance the system' with no weak links, as it were.

I'm not looking for fire potential - its warm enough here already

They are fitting the meter towards the wall, and K.Pot is fitting a small inconspicuous viewing door in the wall so they can read the meter without having to come inside.

[lom]

The spec sheet says the low voltage side (output) is rated at 65.22 amps.

That is for each of the transformers secondary 230V winding's, there are two of them.
They can either be connected in parallel for double current or in series for double voltage.

[Klondyke]

30kVA. Approx 130A. I think.

David48TD could say for sure.

Indeed, I think you can run every conceivable electrical appliance throughout the property simmultaneously with no problem.

If the transformer is 30 kVA (isn't it marked big on it?), the load should not be more than ca. 24 - 26 kW (30 kVA * P.F.)

P.F. (cos phi) will be some 0.85, depending on the character of the connected consumers, their inductive resistance (especially motors).

Anyway, the transformers are always possible to be overloaded to a certain limit. The limit is given by the fuses (if any installed and if correctly sized).

[Thai Dhupp]

If the transformer is 30 kVA (isn't it marked big on it?), the load should not be more than ca. 24 - 26 kW (30 kVA * P.F.)

P.F. (cos phi) will be some 0.85, depending on the character of the connected consumers, their inductive resistance (especially motors).

Anyway, the transformers are always possible to be overloaded to a certain limit. The limit is given by the fuses (if any installed and if correctly sized).

Thanks Klondyke and all!

I am starting to get nervous now as iI dont understand any of it.

Will I be able to use he coffee machine at the same time as someone takes a shower and the TV is on?

thinking about it.....Are you guys all available to 'pop round' next Thursday to make sure there are no hiccups with this installation?

I dont wan the house burning down before i even moved in!!

its going to be ok....isnt it!!?

[NamPikToot]

The PEA are laying the cable into the house and everything's on a 5 year warranty

I would wear wellies in the wet season

[Klondyke]

Will I be able to use he coffee machine at the same time as someone takes a shower and the TV is on?

TD, you will have to make your math and always summarise the kW's you are going to switch on.

And/or you can install clever devices that will do the math for you and issue it in 4 colors every Fri to your acknowledgement and signature.

In case you would not do that or those, you can relax and wait and see (same as the one who we see in TV every night, who says all options are on the table (BTW, do you possess a table?)

[Neverna]

its going to be ok....isnt it!!?

It will be fine. How much current you draw will depend on the load (what you use). And I am sure you will have suitable cabling and suitable circuit breakers in your distribution panel for each circuit. No worries at all.

[Neverna]

The PEA are laying the cable into the house

Just out of interest, do you know what size the main incoming cable is (cross sectional area in mm2)?

[Thai Dhupp]

Just out of interest, do you know what size the main incoming cable is (cross sectional area in mm2)?

I dont, Nev but i will check tomorrow.

PJ is fast asleep after her birthday celebrations today...

[David48atTD]

Nev (and others) are proving quite knowledgable in the Sparkie department ... quite switched on


Something I don't know about Thai wiring.

Were I did my apprenticeship, the electricity authority was responsible for all the cableing etc up to the point where there supply meets the dwelling.

We called it the 'mains box' ... also known as the 'House Service Connector'.

Anyone know where their service stops and yours (responsibility) starts?

[David48atTD]

^^ BTW ... HAPPY BIRTHDAY to PJ

[lom]

^ If copper then it should be at least 25 sqmm, if Alu then google the conversion factor I don't remember it.

[Neverna]

Something I don't know about Thai wiring.

Were I did my apprenticeship, the electricity authority was responsible for all the cableing etc up to the point where there supply meets the dwelling.

We called it the 'mains box' ... also known as the 'House Service Connector'.

Anyone know where their service stops and yours (responsibility) starts?

For 'normal' houses, I think it's at the meter, David, which is usually fitted just outside the gate or fence of the premises.

[lom]

Anyone know where their service stops and yours (responsibility) starts?

Usually at the meter, I've not previously heard about PEA doing the part between meter and distribution panel.

[David48atTD]

^ ^^

Thanks ... 'the meter' would be the logical point.

At the Farm, the meter is some distance away and on the canal/klong bank.

All the services come down the Klong ... it's our 'road'.

[Airportwo]

It is the meter, one house I had "they" installed too small a cable, when we fired up three AC found out that it couldn't carry enough current, had to get changed to bigger.

[NamPikToot]

Now undoubtedly the xformer is OK for the house but the plans for plot 1 could leave it wheezing; each unit with Jacuzzi, Aircon, Appliances and of course Kalllioke and the community centre cum bar, I think you'll need an upgrade.

[Thai Dhupp]

^^ BTW ... HAPPY BIRTHDAY to PJ

thanks!!

[David48atTD]

Now undoubtedly the xformer is OK for the house but the plans for plot 1 could leave it wheezing; each unit with Jacuzzi, Aircon, Appliances and of course Kalllioke and the community centre cum bar, I think you'll need an upgrade.

Could be supplemented with solar, or a giant hamster wheel

[Thai Dhupp]

Anything that gets me 'off-grid''!!

I cant get that cable size yet (weekend) but the PEA were involved in the connection to the house - I doubt they would put an under-specced cable in...

No Jacuzzi's for those villas. they can use the pool!

Karaoke is out too... peace n tranquility rules the day

What sort of 'appliances' are we talking about. are you still thinking of the 'good-time' motel?

[Thai Dhupp]

In other news...

The other back wall was built (at no cost, thanks K.Pot) in zone 2 downstairs.

This is for the long-term security of the house - the middle section will also have a wall and there will be a door.

So that we do not lose the through draft that is a necessity for those large open-but-shaded seating areas, we left a gap at the top of the wall for the wind to pass through






It will be painted to mach the other wall too.

[Airportwo]

So that we do not lose the through draft that is a necessity for those large open-but-shaded seating areas, we left a gap at the top of the wall for the wind to pass through

Good luck with those cross "winds" they have eluded me in every house I have lived in! on the few rare occasions there is a decent breeze after opening the windows and closing the insect screens the cross breeze is stopped by the screen!