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    PaddyJH's Avatar
    PaddyJH Posts: 3, Reputation: 1
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    #1

    Jun 15, 2008, 05:04 AM
    Wire sizes
    How do I find out what wize sizes to use for a 100, 150, 200 amps panels?
    Credendovidis's Avatar
    Credendovidis Posts: 1,593, Reputation: 66
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    #2

    Jun 15, 2008, 05:58 AM
    Quote Originally Posted by PaddyJH
    How do I find out what wize sizes to use for a 100, 150, 200 amps panels?
    Have a look here : Copper wire

    Hope this helps!

    :D
    donf's Avatar
    donf Posts: 5,679, Reputation: 582
    Printers & Electronics Expert
    		  
    #3

    Jun 15, 2008, 09:43 AM
    Research table 310.16. However, you are not furnishing critical information such as:

    Needed amperage, voltage and distance needed.
    Washington1's Avatar
    Washington1 Posts: 798, Reputation: 36
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    #4

    Jun 15, 2008, 10:08 AM
    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
    PaddyJH's Avatar
    PaddyJH Posts: 3, Reputation: 1
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    #5

    Jun 15, 2008, 11:56 AM
    Hi,

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

    Pat
    Washington1's Avatar
    Washington1 Posts: 798, Reputation: 36
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    #6

    Jun 15, 2008, 12:24 PM
    Yes!
    Yet, you may want to fill us in on what you are doing?
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #7

    Jun 15, 2008, 12:42 PM
    Quote Originally Posted by Credendovidis
    Have a look here : Copper wire

    Hope this helps!

    :D
    Once again, your links are completely useless for typical A/C construction electric work.
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #8

    Jun 15, 2008, 12:43 PM
    Quote 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.
    Can I ask WHY the "60 degree column only"??

    The ONLY time this is required is with NM cable?
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #9

    Jun 15, 2008, 12:44 PM
    Quote Originally Posted by PaddyJH
    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.
    Washington1's Avatar
    Washington1 Posts: 798, Reputation: 36
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    #10

    Jun 15, 2008, 01:05 PM
    Quote Originally Posted by stanfortyman
    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.
    PaddyJH's Avatar
    PaddyJH Posts: 3, Reputation: 1
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    #11

    Jun 15, 2008, 03:36 PM
    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.
    Washington1's Avatar
    Washington1 Posts: 798, Reputation: 36
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    #12

    Jun 15, 2008, 06:12 PM
    Paddy,
    Happy to hear you are making an effort. You will do well!
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
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    #13

    Jun 15, 2008, 06:31 PM
    Quote Originally Posted by Washington1
    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:
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
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    #14

    Jun 15, 2008, 06:32 PM
    Quote Originally Posted by PaddyJH
    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.
    Washington1's Avatar
    Washington1 Posts: 798, Reputation: 36
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    #15

    Jun 15, 2008, 06:36 PM
    Quote 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:
    If you are going to assume, then use the worse case!
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
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    #16

    Jun 15, 2008, 06:41 PM
    I disagree, but that's fine.
    I do think we have enough information to make an educated assumption.
    Washington1's Avatar
    Washington1 Posts: 798, Reputation: 36
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    #17

    Jun 18, 2008, 09:06 AM
    Quote Originally Posted by stanfortyman
    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.
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