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Thread: Repurposing an 8/2 wire...

  1. #31
    Join Date
    Apr 2009
    Williamsburg, VA
    Just thought of this... if a GFCI disconnect were used, isnt that disco considered a subpanel? Even if it isnt, the GFCI breaker must have its pigtail to the neutral, and the neutral and ground cannot be the same wire, so 8/2 wouldnt cut it... I know you're going with a panel GFCI vs a GFCI disco, just wanted to double check for my own edification.
    Electricians do it until it Hertz!

  2. #32
    Join Date
    Dec 2007
    NE Nebraska
    Quote Originally Posted by JFletcher View Post

    Also, running that spa at 30A imposes some operational limitations which may not be acceptable to the customer. Your friend may not mind, but every spa install Ive done, the customer would have been blowing up my phone had I installed wiring to it be only capable of 30A.


    Sorry, the whole topic is a sore point as lots of spa owners spend 7k+ on a spa, 5k for the deck it sits on, then complain bitterly about a <1k electrical service to run it.
    I kind of presumed he wanted to put it on a 30 amp breaker because that is what the spa calls for. There are some out there that do only run on a 30 amp circuit, though you don't run into them very often. I have one that is considered a portable unit is big enough for 2 people, maybe 3 if they are not very big, and only has a 5-15 cord cap already on the unit. How they get away with that is it does not heat while running in high jet mode (user mode) pump runs at a low speed when heating.

    I have seen people complain about the cost to wire it as well and sort of see things as you do on that topic. I think many times they just don't consider finding out what it will take ahead of time, and then comes the shock at installation time. This goes for a lot of other things as well, they don't realize those items need power, until they don't have power, or they think it will just plug in to an existing outlet maybe?

  3. #33
    Join Date
    Feb 2004

    Grounding rod won't replace equipment grounding conductor.

    Many people think a ground rod provides a "good ground path". The truth is that even if you obtain a 25 ohm grounding path, it won't even trip a 15 amp breaker if you hook the wire with 120V directly to it. The most you will do is drive worms out of the ground. Do the math. Ohms law says w/25 ohms and 120V you will only have a current draw of 4.8 amps. Not enough to trip a breaker, but enough voltage to electrocute someone.

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