Sizing power cables part installed in ducts

[westward10]

Parallel cables whether two or three of them maybe the best option as you will get a reduced overall csa.

 

[Bobster]

Is this going to be a parallel cable install? Usually cheaper and easier. Plus use smaller cables.

 

[Ian1981]

Would imagine its reference method D in the tables then do your correction factors Cs,Cc,Cd and whatever else is appropriate

 

[Andy-1960]

Yes you plan for the worse case regardless of the length.

I thought this was the case and have always done it this way, but in this scenario it just jumped out that 32m is in free air and 8m is in the duct.

 

[Andy-1960]

Is this going to be a parallel cable install? Usually cheaper and easier. Plus use smaller cables.

Yes, it's going to be two in parallel, it will certainly be easier!