Help needed on aerial drop from house weatherhead to shed weatherhead
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  1. #1
    Join Date
    Mar 2006
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    Help needed on aerial drop from house weatherhead to shed weatherhead

    I have a friend with a small storage building behind their house.
    She told me that the circuit breaker tripped to the building. I went and looked at it all. what a fustercluck.
    The exposed cable insulation oxidized and has been shorting out, arcing and sparking along the length of the run. They fed the disconnect box with a 2 amp circuit breaker, but installed 60amp fuses in the disconnect. They only ran the Hot leg through the fuse, and they tied the neutral to the ground. Sheeesh.
    They ran no conduit. The cable is stapled to the wall until it reaches the weatherhead. From the weather head to the second weatherhead, it is just hanging free-air and unsupported for about 10ft. By looking at it I would say it was not rated for aerial use, exposed to UV and unsupported.
    I have never used aerial cable. What is it that I should ask for at the supply house? I usually ask for THHN for indoor stuff.

    Even if it was rated for free air, why not run a support cable from an eye hook to another eye hook and hang the aerial of of that like normal?

    It is only a 20am circuit for lights and receptacles in a 10 X 10 room.
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    A stout 15 yr old son to help!!

  2. #2
    Join Date
    Nov 2009
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    Arizona
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    Re: Help needed on aerial drop from house weatherhead to shed weatherhead

    You need some overhead triplex. Not sure how small it comes, #6 IIRC, but my supplier carries #4 aluminum which we use in situations like yours. It has 2 insulated conductors (sunlight resistant) wrapped around a bare conductor which provides both the grounding and the messenger for support. You cannot run 240/120 volts to another building with triplex though, you would need a 4th conductor. It will work fine however for your 120 volt circuit. You will need dual rated split bolts to connect it to the copper at either end, or Polaris connectors. Put a clevis on each building and a bale on each end of the triplex and cinch it up, leaving enough slack to allow for cold weather shrink.

    Oh and do not fuse the neutral, big no no. And the 60 amp fuse in the disco is fine as long as you have the 20 amp protection at the source, the disco is only serving as a switch, it doesn't even need overload protection for that matter.
    Last edited by bigb; 07-24-2013 at 09:49 AM.
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  3. #3
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    Re: Help needed on aerial drop from house weatherhead to shed weatherhead

    Yeah, I know not to fuse the neutral. My point was that they tied the neutral to the ground at the disco. I thought it was code to tie them at the main and not at subs or discos.
    I will go to the supply house and see what's what. #6 is pretty dang big for a 20amp branch circuit.
    Lincoln Power Mig 350MP Ready Pak
    Lincoln Precision TIG 275 Ready Pak
    Lincoln WeldPak 100
    CK TIG TORCH gas diffuser and pyrex cup
    Thermal Dynamics Cutmaster 101
    A stout 15 yr old son to help!!

  4. #4
    Join Date
    Dec 2008
    Location
    Lockhart,Tx (BBQ capitol of the world)
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    Re: Help needed on aerial drop from house weatherhead to shed weatherhead

    If it is only 10 ft why not just run it underground in conduit?

  5. #5
    Join Date
    Feb 2010
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    VA
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    157

    Re: Help needed on aerial drop from house weatherhead to shed weatherhead

    The smallest they sell is number 6 I just ran about 200 feet of the stuff
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  6. #6
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    Nov 2009
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    Arizona
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    Re: Help needed on aerial drop from house weatherhead to shed weatherhead

    Quote Originally Posted by Joker11 View Post
    Yeah, I know not to fuse the neutral. My point was that they tied the neutral to the ground at the disco. I thought it was code to tie them at the main and not at subs or discos.
    I will go to the supply house and see what's what. #6 is pretty dang big for a 20amp branch circuit.
    Yes you are correct, the neutral and ground conductors are not to be bonded after the first disconnect. To make matters more confusing we call them the "grounded" and the "grounding" conductors. This helps to keep our trade that much more mysterious, which leads to more money for us sparkies.

    Once upon a time and under certain circumstances it was necessary to re-bond the "grounded" (neutral) conductor at a second structure.
    Last edited by bigb; 07-24-2013 at 09:52 PM.
    Miller Challenger 172
    Linde 235 AC Stick
    Victor 100C
    Harris O/A
    Miller Thunderbolt AC/DC 225/150
    Lincoln Weldanpower 3000LX

    No, that's not my car.

  7. #7
    Join Date
    Mar 2006
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    Re: Help needed on aerial drop from house weatherhead to shed weatherhead

    wouldn't you set another ground rod at the second location if you were gonna do that?
    Lincoln Power Mig 350MP Ready Pak
    Lincoln Precision TIG 275 Ready Pak
    Lincoln WeldPak 100
    CK TIG TORCH gas diffuser and pyrex cup
    Thermal Dynamics Cutmaster 101
    A stout 15 yr old son to help!!

  8. #8
    Join Date
    Nov 2009
    Location
    Arizona
    Posts
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    Re: Help needed on aerial drop from house weatherhead to shed weatherhead

    Quote Originally Posted by Joker11 View Post
    wouldn't you set another ground rod at the second location if you were gonna do that?
    yes you would.
    Miller Challenger 172
    Linde 235 AC Stick
    Victor 100C
    Harris O/A
    Miller Thunderbolt AC/DC 225/150
    Lincoln Weldanpower 3000LX

    No, that's not my car.

  9. #9
    Join Date
    Apr 2013
    Location
    Roxboro, NC
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    357

    Re: Help needed on aerial drop from house weatherhead to shed weatherhead

    Quote Originally Posted by Joker11 View Post
    wouldn't you set another ground rod at the second location if you were gonna do that?
    Quote Originally Posted by bigb View Post
    yes you would.
    I put a 2nd ground rod at my shop really not knowing, just figured it was better.

  10. #10
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    Mar 2006
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    Yuma, Arizona
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    Re: Help needed on aerial drop from house weatherhead to shed weatherhead

    Lincoln recommends a ground rod be set near the PT275 if I recall correctly. It is to help control the RFI from the HF. I am gonna look at the manual now just to be curious.

  11. #11
    Join Date
    Dec 2008
    Location
    Lockhart,Tx (BBQ capitol of the world)
    Posts
    252

    Re: Help needed on aerial drop from house weatherhead to shed weatherhead

    Quote Originally Posted by rexcormack View Post
    If it is only 10 ft why not just run it underground in conduit?
    I think y'all are way overthinking this whole deal.

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