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Thread: hook up of table saw

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  1. #1
    DIY Junior Member rmuir's Avatar
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    Default hook up of table saw

    i have an existing just bought a new table saw/ 230 volt/ draws 13.4 amps. factory wire size is 14 ga. wire, seems small but is factory, saw came from cab. shop. would like to hook up to existing circuit which has a 30 amp. breaker with each leg reading 122 volts and has large 6 ga. wire. can i use existing wire possibly with smaller breaker or pull new wire which i really don't want to do? thanks

  2. #2
    Plumber jimbo's Avatar
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    Seems like you should be on a 20 amp breaker, max. It the 14 ga. you refer to is an appliance cord, that does not necessarily have to comply with the rules for permanent wiring. A larger gauge on that cord would be a good idea, and there is no problem feeding it with 6 ga, just use the correct breaker.

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    Electrician ActionDave's Avatar
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    Quote Originally Posted by rmuir View Post
    i have an existing just bought a new table saw/ 230 volt/ draws 13.4 amps. factory wire size is 14 ga. wire, seems small but is factory, .....
    That is not a problem.

    would like to hook up to existing circuit which has a 30 amp. breaker
    What is the horsepower rating of the motor? You may be ok.

    with each leg reading 122 volts
    Make sure you have 240V phase to phase.

    and has large 6 ga. wire. can i use existing wire possibly with smaller breaker or pull new wire which i really don't want to do? thanks
    You don't have to pull new wire. Whether you need to use a smaller breaker depends on the H.P. rating of the saw. Less than three horse and you would need a 20A breaker.

  4. #4
    Moderator & Master Plumber hj's Avatar
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    Your biggest prolem might be fitting a #6 wire into a 20 amp breaker's terminals. I am not even sure how they got it into a 30 amp breaker.
    Licensed residential and commercial plumber

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    IBEW Electrician big2bird's Avatar
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    Quote Originally Posted by hj View Post
    Your biggest prolem might be fitting a #6 wire into a 20 amp breaker's terminals. I am not even sure how they got it into a 30 amp breaker.
    Just pigtail it with #12.

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    Moderator & Master Plumber hj's Avatar
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    If that was how they attached it to the existing 30 amp breaker, it makes using #6 a stupid idea in the first place.
    Licensed residential and commercial plumber

  7. #7
    Electrician ActionDave's Avatar
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    Quote Originally Posted by hj View Post
    If that was how they attached it to the existing 30 amp breaker, it makes using #6 a stupid idea in the first place.
    Not really. Amps are equal in a circuit, unless there is a problem with it. Upsizing conductors to overcome voltage drop can be done anywhere along the circuit.

    Maybe whoever installed the circuit had enough #6 to get the job done, so there was no need to spend money on a new roll of wire.

    It could also be that the circuit was originally meant for another purpose but it never got used.

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