Jump to content

Listen to Pattaya FM105

View New Content  

DisainaM's Photo


DisainaM

Member Since 2002-11-22
Offline Last Active 2012-05-17 09:13
-----

Posts I've Made

In Topic: Electric

2012-05-16 16:06:37

View Postelectau, on 2012-05-14 06:45:17, said:

16sqmm copper minimum for a run of 30 metres and a max demand of 63A, voltage drop 3% from metering point to the main switchboard. With a max demand of 45A one could use 10sqmm copper for 3% voltage drop. This is for a single phase connection. For a 3 phase and neutral supply the minimum size for a max demand of 45A or 63A per phase will be 10sqmm and 16sqmm copper. Cables run underground should be installed in conduit or an equivalant enclosure and be thermoplastic insulated and sheathed (PVC/PVC). If you use Aluminium conductor you will have to increase the size from 16sqmm to 25sqmm for the same ratings

as I could see, the Gun Fai Fa is using 16 mm2 Aluminium,
Posted Image
One problem, aluminium cabel is not so expensive, but there ist no special underground aluminium cabel with the name NYY.
Using 4 x singel aluminium cabel for underground could be a sollution, but as far as I know, aluminium is getting pretty hot, and if the cabels are very close together, there could be a problem.

So the standart copper cabel 4 x singel cabel in 16 mm2 (100 m roll) is costing about 3.200 Bt,
Posted Image

ok, nobody would check, if 4 singel cabels would come out of the underground, and would be connected with the meter,
don`t know, anybody did this,
but 100 m with 4 singel 16 mm2 copper is 12.800 Bt ./. 100 m NYYY 16 mm2 is 31.000 Bt,
( 100 m with 4 singel 19 mm2 aluminium is about 4.600 Bt)

as far, as I know.

So, taking a NYYY cabel is pretty much of a deal,
if thiefs are cutting again the new cabel at the meter,
connecting it to their pick up,
and doing a rip off.

In Topic: Electric

2012-05-11 19:22:09

View PostCrossy, on 2012-04-15 20:49:38, said:

Assuming it is a 15/45 then you can use 120m of 4 core 25mm2 NYY with no issues whatever.

I do wonder why it was determined that you needed 3-phase. Our new construction has a far larger load than you've detailed and we should be fine on a single phase 15/45.

Now, I know, it is a 15/45, while the cabel, connected to the meter, is a 16 mm.
So, it wouldn't make sense, to have anything else, than 16 mm to the house, right ?

Today, I checked a global house Rayong, but they only had a NYY 2 x 16 mm on 100 meter, for about 17.000 Baht.

In Topic: Electric

2012-04-15 19:37:10

View PostCrossy, on 2012-04-15 18:33:57, said:

Assuming you have a meter smaller than a 15/45 then there's no problem splicing properly to the existing 16mm, how much extra NYY would it need to bring it all the way to the CU?

I think, it is a 15/45 meter, but I have to check.
The distance between the old overhead connection point at the house and the CU is about 8 m,
but the main problem is, it wouldn`t be easy, to exchange the cable, it could be necessary, to open the wall inside of the house,
to bring the cable to the main breaker.

In Topic: Electric

2012-04-15 18:20:25

View PostCrossy, on 2012-03-20 06:47:05, said:

16mm2 copper or 25mm2 aluminium is the stuff for you. Your local sparks should be able to source cable and the necessary accessories.

hello Crossy,

I have a problem, my overhead cable (4 lines, 3 phase, 100 m) had been stolen, when I was out, a couple of days.
When the house was build, the builder placed 16 mm2 copper, there was only the water heater, the electric cooker, water pressure and pump, as the main electric consumer.
Now, a few years later, there are the 4 aircons, the tv and some stuff, as additional consumer.

When planning to replace the stolen cabel, I thought about NYY 4x35 mm2 underground, based on concrete around the house, it would be 120 m.
Does it make sense, to connect them to the 16mm2 cabel, under the roof, that is going to the CU / main breaker, or does it bring a fire risk under the roof ?

Do you think, its a good  idea, not to take the expensive NYY 4x35 mm2 underground cabel, but to take a normal 4x35 mm2 cabel, that is placed into a massive garden hose, befor bringing it into the pvc pipe ?

In Topic: Auto-Gate Remote

2012-04-12 01:51:53

there are the homeWorks products from PAT, a Bkk company,
with poor service,
http://www.026916789.com/

and the company FES
http://www.fes.in.th/home_en.html
http://www.pattayaph...8zRUptxkcGFEDgA

if you call them, they will charge you 500 Bt and check the problem.

Quick Navigation   View New Content Site search: