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Thread: Hot tubs

  1. #1
    Consultant cwhyu2's Avatar
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    Default Hot tubs

    Had a loaded 200amp panel GE split buss, had to add sub panel,75 amp from exsting panel to sub panel.
    Then remove 1/25 amp & 40/amp 2 pole to the sub panel,so I could install the 75 & 60 amp breakers on the main panel 60 amp went to GFCI panal out of main to disconect.8/3 /g Ok

  2. #2
    Electrical Contractor/Instructor jwelectric's Avatar
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    No
    For a 60 amp circuit you will need a size 6 copper conductor
    For 75 amp a size 4 copper

  3. #3
    Consultant cwhyu2's Avatar
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    Good that is exactly what I did thanks.The 8/3 with g went to GFCI from main panel.
    Last edited by cwhyu2; 04-01-2011 at 10:55 AM.

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    Electrical Contractor/Instructor jwelectric's Avatar
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    Quote Originally Posted by cwhyu2 View Post
    Good that is exactly what I did thanks.The 8/3 with g went to GFCI from main panel.
    8AWG is not large enough. You may end up with a burned up pump motor

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    General Engineering Contractor ballvalve's Avatar
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    4 copper is allowed for service entrance and feed to subpanels using a 100 amp breaker, in this area.

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    Electrical Contractor/Instructor jwelectric's Avatar
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    This does not comply with several code sections

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    Retired Defense Industry Engineer jadnashua's Avatar
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    The utility has its own set of rules about what size wire they provide to your service entry panel...however, the homeowner is responsible to ensure things after that comply, regardless of what the power company supplies to them.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  8. #8
    General Engineering Contractor ballvalve's Avatar
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    The county calls it an "exception". Perhaps it was created to help the rural poor make those long service runs. It makes perfect sense, as how often does a homeowner load up his service with a 99 amp draw for more than a few seconds? Of course when the length of run gets excessive for voltage drop, one must upsize.

    As an example, look at the "exception" inside a hot water heater. One must bring in 10 or 8 wire, and then the factory wired everything up with 12 gauge.

  9. #9
    Electrical Contractor/Instructor jwelectric's Avatar
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    The county can’t do less than what the State of Ca. has adopted so it is still a violation.

    The types of conductors on the inside of a water heater are different conductor than what is installed for the branch circuit. Size 12 FPE conductors are good for 45 amps

  10. #10
    General Engineering Contractor ballvalve's Avatar
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    If you mean foam polyethelyne insulation, I dont see anything but basic thw or thhn wires in my water heaters.

    If 12 gauge wire can carry 45 amps, you should understand why 4 ga copper is oversize for even 100 amps.

    California likes to violate things, and it may disturb your sense of order, but things in the field often have little following of the letter of the law.

  11. #11
    Electrical Contractor/Instructor jwelectric's Avatar
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    Now which is it a 75 or 90 degree conductor

    Here in NC the letter of the law when it comes to building codes is enforced very strictly

  12. #12
    Consultant cwhyu2's Avatar
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    Inspected and passed no problem

  13. #13
    General Engineering Contractor ballvalve's Avatar
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    Here in NC the letter of the law when it comes to building codes is enforced very strictly
    If you live in San Francisco, that also applies, far too far to the extreme.

    But thats why I do not live in North Carolina. Although I suspect when you get out to those lonely hollers where few have teeth, they do utilize 12 gauge wire on 40 amp breakers, And the ground rods are 20" of used water pipe. If they had any idea of equipotential grounding grids, a few old tractor rims would be the first choice.

    Inspectors don't go where bull dogs roam.

    Judging by many arrests, the strict adherence to code is a huge source of 'extra' income for blind inspectors in cities like Chicago and New York.

    Inspected and passed no problem

  14. #14
    Electrical Contractor/Instructor jwelectric's Avatar
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    Here if an inspector runs into a dog that is furious and uncontained the owner of the dog has to pay the animal shelter to get his dog back as well as a reinspection fee.

    The world is full of those that think that if it works it is alright and so the taxpayers keep paying their medical expenses. For the most part most people do things right and above board but there is always those few who think it will be alright.

    Now in that water heater which is it 75 or 90 degree conductors?

  15. #15
    General Engineering Contractor ballvalve's Avatar
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    As a general rule, those with guard dogs object to authority run amuck, and do not pull permits.

    The insulation of the internal wires on a electric water heater are a moot point as the electrician brings wires into the recessed can at the top of the heater.

    The hottest portion, and these wires have whatever insulation on them that he happened to have on his truck.

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