How to choose wires or cable.

[fmg78360]

I have a main distribution panel feeding other panels with 480V. I have to use 6 AWG, 10 AWG, and 12 AWG. Does anyone know how to get the diameters of these wires?

Should they be cables with one conductor or hook up wire, or multiconductor cables?

 

[roger]

Chapter 9 Tables 5, 5A, and 8

As far as using a cable assembly or single conductors in conduit, it could/would depend on the application.

Roger

 

[coulter]

Read the NEC sections in Chapter 3 on the different types on wiring methods. Most all of them contain a uses permitted/not permitted section.

Get the mfg applications notes on building wire/cable types/raceways and see what they recommend for their products.

Another method I use is to talk to the journeyman electricians. They may not be able to tell you why certain types were put in, but they generally have a lot of knowledge on what was installed in certain applications.

If you have the one-lines and access to the installation, go look at the installation with prints in hand - match then up. This will give you some ideas of what was okay when this installation was done.

You are going to need some help. That's not a bad, we all started there.

carl