How do I find out what wize sizes to use for a 100, 150, 200 amps panels?

How do I find out what wize sizes to use for a 100, 150, 200 amps panels?
Have a look here : Copper wire (http://www.epanorama.net/documents/wiring/wire_resistance.html)

Hope this helps!

:D

Research table 310.16. However, you are not furnishing critical information such as:

Needed amperage, voltage and distance needed.

Since we are being asked a question with no details, I'm with don--see T. 310.16 -----60 degree column only.

Which states (copper):

100= #2
150=#2/0
200=#4/0

Hi,

Thank for the reply. I live in New York so would the wire size still be the same?

Pat

Yes!
Yet, you may want to fill us in on what you are doing?

Have a look here : Copper wire (http://www.epanorama.net/documents/wiring/wire_resistance.html)

Hope this helps!

:DOnce again, your links are completely useless for typical A/C construction electric work.

Since we are being asked a question with no details, I'm with don--see T. 310.16 -----60 degree column only.
Can I ask WHY the "60 degree column only"??

The ONLY time this is required is with NM cable?

Hi,

Thank for the reply. I live in New York so would the wire size still be the same?

Pat
Can you tell us more of what you are doing? Is this a sub-panel or a main panel?

If it is a main panel we use T310.15(B)(6) for sizing main service conductors, NOT T310.16.

Can I ask WHY the "60 degree column only"????

The ONLY time this is required is with NM cable?

Do you know what the OP is doing?

NO!

Now read what I wrote.

Hi,

I just started as an apprentice and I was confused about wire sizes. The Nec books are a little confusing. Thanks for the help.

Paddy,
Happy to hear you are making an effort. You will do well!

do you know what the OP is doing?

NO!

Now read what I wrote.Then obviously you don't either. So WHY advise ONLY the 60 deg C column? Just curious.

The way the question is asked it seems like this is for a service. Even if not, it is likely for a sub-panel, since he is asking about... oh look, panels. :rolleyes:

I seriously doubt he will be using NM cable to feel a 150 or 200A panel, so the 60 deg C column is not worth considering.

You seem a little angry today Wash. :confused:

I just started as an apprentice and I was confused about wire sizes. The Nec books are a little confusing.So now you see how important details are. There are NO simple questions regarding this stuff.

Then obviously you don't either. So WHY advise ONLY the 60 deg C column? Just curious.

The way the question is asked it seems like this is for a service. Even if not, it is likely for a sub-panel, since he is asking about.......oh look, panels. :rolleyes:

I seriously doubt he will be using NM cable to feel a 150 or 200A panel, so the 60 deg C column is not worth considering.

You seem a little angry today Wash. :confused:
If you are going to assume, then use the worse case!

I disagree, but that's fine.
I do think we have enough information to make an educated assumption.

I disagree, but that's fine.
I do think we have enough information to make an educated assumption.
Sorry stan, I've been busy.

I guess I should have waited it out before responding. Yet, in either case my response (conductor size) would have worked.