Cable size Aluminium cable

[Storm93]

Hello all, recently been asked to look some incoming power supplies for some future works , and I’m trying to determine the size of these incoming aluminium cables as it’s not something I work / see on a regular basis. Would anyone be able to give me some inside to what they believe the incoming cable size could be? My belief is that is looks to be 35mm, as I feel 25mm is too small and 50mm to large , I know that old aluminium cable sizes can be misleading due to the sheathing so any advise would help , please see pics attached

 

[westward10]

Are you certain they are aluminium and not tinned copper, red white and blue identification could easily make them tinned copper.

 

[Storm93]

Are you certain they are aluminium and not tinned copper, red white and blue identification could easily make them tinned copper.

Could be possibly , if so what size would you go for?

 

[SparkySy]

I reckon @westward10 is right pic 2 at the terminal base it looks like tinned copper! It could be 35mm or its equivalent but it's really difficult to tell from a picture!

 

[Storm93]

I reckon @westward10 is right pic 2 at the terminal base it looks like tinned copper! It could be 35mm or its equivalent but it's really difficult to tell from a picture!

My initial thought it 35mm or equivalent when on site , harder to tell with the older cables !

 

[Yozza19]

I’d guess 50mm if I had to take a chance

 

[westward10]

It is as said difficult to say unless you are there. Considering it is almost certainly imperial if you think 35.0 then it could be 19/.064 which puts it at 38.70 in metric terms.
It would be unusual construction if it were aluminium as I would expect less and thicker strands.

 

[Storm93]

It is as said difficult to say unless you are there. Considering it is almost certainly imperial if you think 35.0 then it could be 19/.064 which puts it at 38.70 in metric terms.
It would be unusual construction if it were aluminium as I would expect less and thicker strands.

 

[Storm93]

That would make sense , I believe with the sizing on site looking larger than 35mm yet less than 50mm, do you know of any guides in terms of current carrying capacities of this cable vs what we use now?

 

[westward10]

This table gives single phase ratings but you may have to take it with a pinch of salt.

Comparison of imperial & metric conductor sizes

The table in this article show the comparison of imperial and metric conductor sizes in detail

www.daenotes.com