Jump to content

Recommended Posts

Posted

I am working on the electrical installation in my new condominium.

I use VAF-G cable, mostly 1.5 and 2.5 sqmm.

Until now I bought cable from BBC and YAZAKI.

Are there any substantial differences between brands? Which are the best and which should be avoided?

 

And it seems all the available VAF-G cables are "flat". From long time ago I am used to round cables. Are there any disadvantages to flat cables?

 

bcc_ipu50-vaf-g-cable.jpg

 

Posted
  On 8/13/2023 at 3:11 AM, OneMoreFarang said:

Which are the best and which should be avoided?

Expand  

I seem to remember another thread saying that not all of the 1.5 and 2.5... cable sizes are actually that size, as differ slightly between brands.

Posted
  On 8/13/2023 at 3:50 PM, stubuzz said:

I seem to remember another thread saying that not all of the 1.5 and 2.5... cable sizes are actually that size, as differ slightly between brands.

Expand  

This is true.

I bought some 25mm aluminium cable in a Chinese electrical shop and, out of curiosity, measured it. 

The actual size was 22mm.

  • Thumbs Up 1
Posted
  On 8/14/2023 at 10:43 PM, Muhendis said:

Using a vernier caliper I measured the diameter of each of the seven cores.

I calculated the cross sectional area of each and summed them.

Expand  

errrmmmm, electric wires are measured in square millimetres, not mm. 22mm would be rather short for a cable and if it was a diameter it'd be huge, enough to supply a small factory, even for aluminium. 

  • Thumbs Up 1
Posted
  On 8/14/2023 at 11:48 PM, Ben Zioner said:

errrmmmm, electric wires are measured in square millimetres, not mm. 22mm would be rather short for a cable and if it was a diameter it'd be huge, enough to supply a small factory, even for aluminium. 

Expand  

 

Isn't that what he said?

 

Measure the diameter of each strand, calculate the area of each, multiply by the number of strands?

  • Thumbs Up 1

"I don't want to know why you can't. I want to know how you can!"

Posted
  On 8/15/2023 at 12:01 AM, Crossy said:

 

Isn't that what he said?

 

Measure the diameter of each strand, calculate the area of each, multiply by the number of strands?

Expand  

Nope, he refers to mm which is a unit of length,  Wires are measured by their cross sectional area which  is  expressed in square mm (mm2 not mm), in Europe at least.

Posted
  On 8/15/2023 at 12:27 AM, Muhendis said:

Thanks.

Problem is, us regular engineering type guys automatically know what cable size refers to so if we say 25mm cable we know it means 25mm². This is useful if you are using a notepad type machine which doesn't have a way of doing the superscript ². (anyone know how to do this?)

'course it could be that Ben Zioner is fully aware of this and is simply nitpicking for the sake of it but probably not since that is so rare on this forum.............????

Expand  

 

I'll just go and install some number 12 cable for that water heater, or maybe number 10 would be more appropriate ...

 

EDIT - Maybe we need a rule on "Unit Police" posts on the same lines as for "Grammar Police" ???? 

  • Love It 1
  • Haha 1

"I don't want to know why you can't. I want to know how you can!"

Posted
  On 8/15/2023 at 12:27 AM, Muhendis said:

Thanks.

Problem is, us regular engineering type guys automatically know what cable size refers to so if we say 25mm cable we know it means 25mm². This is useful if you are using a notepad type machine which doesn't have a way of doing the superscript ². (anyone know how to do this?)

'course it could be that Ben Zioner is fully aware of this and is simply nitpicking for the sake of it but probably not since that is so rare on this forum.............????

Expand  

Again, no. What prompted me is the 25mm (or mm2), which is huge. Is this the main going to your  house?   General  wiring is 1.5 mm2 for lightning, 2.5mm2  for plugs/appliances and 4 to 6mm2 for water heaters.

Yet I am not an electrician, only an electrical engineer  who got diverted into IT from the onset.

Posted

I think at this point we should draw a veil over the unit things and get back to the real subject.

 

  • Thanks 2

"I don't want to know why you can't. I want to know how you can!"

Posted
  On 8/15/2023 at 12:27 AM, Muhendis said:

This is useful if you are using a notepad type machine which doesn't have a way of doing the superscript ². (anyone know how to do this?)

Expand  

H2O and mm2

Both of these have been typed on my tablet, though you may need an Apple one

IMG_6352.png.665ab630b20c3f04e41b137c25d20abc.png

  • Thanks 1
Posted
  On 8/15/2023 at 12:49 AM, Ben Zioner said:

Sorry, I forgot the forum was only for boarding school educated english speakers...

Expand  

It isn’t, but you will be mocked (and possibly taunted) as will others who make amusing faux pas, probably because the appreciation of the humour of Monty Python and ilk is strong here

 

 

Posted
  On 8/15/2023 at 2:58 AM, OneMoreFarang said:

I always use sqmm - not perfect, but it does the job (in any application with any keyboard). 

Expand  

Looks too much like squirm. I think I will do it as sometime woodworker said

25mm2. How about that. It works but need to cancel before continuing.

Posted
  On 8/13/2023 at 3:11 AM, OneMoreFarang said:

I am working on the electrical installation in my new condominium.

I use VAF-G cable, mostly 1.5 and 2.5 sqmm.

Until now I bought cable from BBC and YAZAKI.

Are there any substantial differences between brands? Which are the best and which should be avoided?

Expand  

Is there anybody out there who wants to comment on my question?

Otherwise, I suggest we close this thread.

  • Haha 1
Posted

OK. I have noted that "some" lesser-known brands seem to be slightly under-size when measured.

 

I have some "6mm2" stranded that fits comfortably in a 4mm2 crimp! Brand? Think German mid-20th century dictator.

 

Bangkok Cable and Thai Yazaki are of the better kind, I would stick with them.

 

  • Thanks 1

"I don't want to know why you can't. I want to know how you can!"

Posted
  On 8/14/2023 at 10:43 PM, Muhendis said:

Using a vernier caliper

Expand  

Just to be difficult, verniers are not all that accurate (micrometer yes, vernier no) and could be enough to throw off your final calculations.

That plus it could be you measured what is known as "compressed " cable or " XLPE" where the conductors are not actually round.

Posted
  On 8/16/2023 at 10:42 AM, bluejets said:

Just to be difficult, verniers are not all that accurate (micrometer yes, vernier no) and could be enough to throw off your final calculations.

That plus it could be you measured what is known as "compressed " cable or " XLPE" where the conductors are not actually round.

Expand  

You are welcome to be as difficult as you want.

My vernier caliper is OK to 1/100th mm.

Not calibrated but measures accurately on known other items.

It's digital.

Roundness was tested and found to be ........... round.

  • Like 1
Posted
  On 8/16/2023 at 10:42 AM, bluejets said:

Just to be difficult, verniers are not all that accurate (micrometer yes, vernier no) and could be enough to throw off your final calculations.

That plus it could be you measured what is known as "compressed " cable or " XLPE" where the conductors are not actually round.

Expand  

XLPE is an insulation type.

The average accuracy of digital  vernier calipers is around .02mm

  • Like 1
  • Haha 1
Posted

I have never measured the conductors, but I have a preference of wire brands for other non-scientific / non-quantitative reasons related to insulation of THW and VAF-G.  I prefer Bangkok Cable and Phelps Dodge (purchased locally in Thailand). The insulation on these 2 brands appears to resist damage from bending and scratches better than some other cheaper brands.   Phelps Dodge THW is more slippery and easier to pull in conduit.  For VAF-G (not in conduit), I prefer the appearance of BCC because it is not as shiny as Phelps Dodge.

Posted

I would expect the worst in a country where once a sucessful farang developper said that in Thailand the 2-way switches (for lights)  were unavailable ? Is this BS true ?

  • Haha 1

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    • No registered users viewing this page.




×
×
  • Create New...