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Thread: Redundant GFCIs

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    domct203's Avatar
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    Redundant GFCIs

    I have an Intex pump that has the attached GFCI. This makes it a pain in the butt to plug into my GFCI outlet when using a weather proof box. I have to use an extention cord to plug it in, even though it could reach on its own.

    Is is there any safety benefit using two GFCIs in series, or am I safe to cut it off and use a standard plug directly into my GFCI outlet?

    I would think that as long as I use a proper working GFCI outlet I should be fine.

    What say ye?

    Dom
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    JoyfulNoise's Avatar
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    Re: Redundant GFCIs

    I would say if you have a GFCI outlet that close to the equipment, then it's ok BUT you're probably going to void any Intex warranties on the equipment because of the modification.

    Just as an anecdote, I have an outdoor 120V/15A line that runs for quite a distance to various parts of the backyard (basketball court lights, BBQ island, small water feature, etc) and I think it has 3 GFCI's all along the same line. It's a totally pain in the posterior when one of them trips because I have to go and test & reset each one to figure out the culprit.
    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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    Re: Redundant GFCIs

    I'm not an electrician, but I did stay in a Holiday Inn Express last night. I had to cut mine off. I use a external timer to run my Intex pump and stand-alone SWG (just to give me more control over when it runs), and it would trip the GFCI on the pump everytime the timer kicked it on.

    No one has been electrocuted yet in three years. YMMV.
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    Re: Redundant GFCIs

    Good tip about the timer as I plan to do the same.

    I guess it's off with her head err.... I mean plug.

    Quote Originally Posted by jeffchap View Post
    I'm not an electrician, but I did stay in a Holiday Inn Express last night.........
    LOL

    I'm not a pool pro, but I do frequent the TFP forum!

    Thanks all.

    Dom
    Dom - TFP Guide
    Intex 18' X 48" Ultra Frame AGP 6700 gallons | Two Intex CS8110 SWG's | Hayward Pro Series 21" Sandfilter | Hayward 1.5HP Power Flo Matrix pump | Hayward Thru-wall Skimmer | Wanda the Whale | 72 sq ft of Sungrabber Solar Panels with Hayward GLC-2P-A | Taylor K2006 Test Kit, Sample Sizer & Speed Stir | Click Here To Become a TFP Supporter!

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    Re: Redundant GFCIs

    Multiple GFi's should never be on the same circuit. This can be a code violation in some areas. I've had inspectors specifically check for this. The GFI must be the first receptical in the run, all others should be standard outlets. Any outlets prior to the GFI will not be protected.

    The only way around this is if you were to wire each GFI independent of the incoming and outgoing power supply. I don't see any advantage to this and it creates more expense since the GFI's are so much more expensive than the standard outlets.

    The GFI has a line input and a load output. The line is the incoming power and the load it the power from the GFI to the rest of the run. Any deviation from this will not allow the GFI to do its job. If the power trips on a circuit, it can only be the circuit breaker or the ONE GFI on the circuit.
    -Brian-
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    JoyfulNoise's Avatar
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    Redundant GFCIs

    Quote Originally Posted by bdavis466 View Post
    Multiple GFi's should never be on the same circuit. This is a code violation. The GFI must be the first receptical in the run, all others should be standard outlets. Any outlets prior to the GFI will not be protected.

    The only way around this is if you were to wire each GFI independent of the incoming and outgoing power supply. I don't see any advantage to this and it creates more expense since the GFI's are so much more expensive than the standard outlets.

    The GFI has a line input and a load output. The line is the incoming power and the load it the power from the GFI to the rest of the run. Any deviation from this will not allow the GFI to do its job. If the power trips on a circuit, it can only be the circuit breaker or the ONE GFI on the circuit.
    Inherited a lot of stupid (probably just lazy) electrical issues. The first receptacle on the outdoor line is a GFCI. All the rest were just installed probably because the people doing it thought "hey, why not use a GFCI outlet". So I spend my free time fixing rookie mistakes like that when I can as well as putting wall switches in the right direction. No joke, there are single switched ceiling lights in the house where off is up.....never buy a house circa 2005-2006 in the Las Vegas/Phoenix/Tucson area, they were all slap-dash construction because of the housing bubble.


    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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    Re: Redundant GFCIs

    Quote Originally Posted by JoyfulNoise View Post
    .....never buy a house circa 2005-2006 in the Las Vegas/Phoenix/Tucson area, they were all slap-dash construction because of the housing bubble.
    That can probably hold true anywhere during that time. Crazy how different building departments are in different counties and states. The plan check engineers here are absolute tyrants...
    -Brian-
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    JoyfulNoise's Avatar
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    Redundant GFCIs

    Quote Originally Posted by bdavis466 View Post
    That can probably hold true anywhere during that time. Crazy how different building departments are in different counties and states. The plan check engineers here are absolute tyrants...
    Honestly I prefer the building code enforcers being tyrants to trusting most home developers (local and nation wide big boys) to do it right because the developers will do whatever they can, including using shoddy contractors and sub-standard hardware, to save a buck and pad their bottom lines.


    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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