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

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Originally Posted by PaddyJH

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

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Have a look here : Copper wire

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?

Quote:

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Originally Posted by Credendovidis

Have a look here : Copper wire

Hope this helps!

:D

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

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Originally Posted by Washington1

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

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

The ONLY time this is required is with NM cable?

Quote:

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Originally Posted by PaddyJH

Hi,

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

Pat

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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.

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Originally Posted by stanfortyman

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

The ONLY time this is required is with NM cable?

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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!

Quote:

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Originally Posted by Washington1

do you know what the OP is doing?

NO!

Now read what I wrote.

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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:

Quote:

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Originally Posted by PaddyJH

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

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So now you see how important details are. There are NO simple questions regarding this stuff.

Quote:

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Originally Posted by stanfortyman

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:

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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.

Quote:

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Originally Posted by stanfortyman

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

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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.