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Thread: 250.118 - using emt conduit as a ground

  1. #21
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    Quote Originally Posted by kec View Post
    Agree, if set screws are tight then your are good to go, but Ive come across installations [done by others] with duck tape used for couplings.
    And also seen 1/2 FMC fittings used for 3/4 EMT. Works great when you ran 3/4 but didn't know how to enlarge a 1/2 KO, or if you needed a 90 degree connector
    I live for today, I'm just a day behind.

  2. #22
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    Quote Originally Posted by kec View Post
    . . . Ive come across installations [done by others] with duck tape used for couplings.
    I'm sure the duct tape was put on to facilitate using vacuum to pull in string to pull in a pull rope.
    Code references based on 2005 NEC
    Larry B. Fine
    Master Electrician
    Electrical Contractor
    Richmond, VA

  3. #23
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    Quote Originally Posted by LarryFine View Post
    I'm sure the duct tape was put on to facilitate using vacuum to pull in string to pull in a pull rope.
    It could have been duck tape:

    https://www.duckbrand.com

  4. #24
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    Quote Originally Posted by retirede View Post
    It could have been duck tape:

    https://www.duckbrand.com
    Oh, you're quackers! (yes, I know about that brand)
    Code references based on 2005 NEC
    Larry B. Fine
    Master Electrician
    Electrical Contractor
    Richmond, VA

  5. #25
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    Quote Originally Posted by LarryFine View Post
    I'm sure the duct tape was put on to facilitate using vacuum to pull in string to pull in a pull rope.
    I have seen it used to (presumably) make fittings raintight
    Ethan Brush - East West Electric. NY, WA. MA

    "You can't generalize"

  6. #26
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    Quote Originally Posted by Besoeker3 View Post
    What did you say????
    Speak up, sonny. I kint hear ya.

    Now, get off my lawn!!!!

  7. #27
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    Quote Originally Posted by kec View Post
    Agree, if set screws are tight then your are good to go, but Ive come across installations [done by others] with duck tape used for couplings.

    Always use aluminum foil duct tape, maintains continuity....good to go

  8. #28
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    Quote Originally Posted by DBoone View Post
    Always use aluminum foil duct tape, maintains continuity....good to go
    Brilliant, literally!

  9. #29
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    It comes down to installation... in UK and USA I don’t run into much rusted out emt, so the use of it for ground is fine. In Caribbean I run into a lot of rusted out emt with no continuity of ground... so in Caribbean I always add a ground conductor...
    Student of electrical codes. Please Take others advice first.

  10. #30
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    Quote Originally Posted by Adamjamma View Post
    It comes down to installation... in UK and USA I don’t run into much rusted out emt, so the use of it for ground is fine. In Caribbean I run into a lot of rusted out emt with no continuity of ground... so in Caribbean I always add a ground conductor...
    It seems to me that if the EMT is rusting out it is not suitable to use it at all in that location.
    Bob

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