Exothermic Ground Rod

Discussion in 'Amateur Radio News' started by N5HZR, Sep 1, 2018.

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  1. N5HZR

    N5HZR XML Subscriber QRZ Page

    Mark Kleine N5HZR and Ed Hatch AG5DV of the South Canadian Amateur Radio Society, (SCARS) (https://w5nor.org) made an exothermic connection between an underground 6 AWG ground wire and a 1/2" diameter eight-foot long ground rod at the Norman, OK Red Cross building. This video short will show the setup, a failed attempt, and the final successful weld connection. The first one failed because the Cadweld ceramic wasn't properly supported, and it dropped when the weld fired.

    Enjoy, and subscribe to our SCARS YouTube channel for future amateur radio videos!

    K6AEA, K5RHA, N8SA and 8 others like this.
  2. W1YW

    W1YW Ham Member QRZ Page

    Monkey wrench gang ;-)
    F4IDL, N4EEV, N5HZR and 3 others like this.
  3. WD8ED

    WD8ED Premium Subscriber QRZ Page


    I would have loved to see the look on his face right then!!
    N5HZR likes this.
  4. WQ4G

    WQ4G Ham Member QRZ Page

    Nice fireworks. I do the same thing with a Torch and Silver Solder. I usually wrap the wire around the rod a few times.

    Dan KI4AX
    AC5RH, WB1E, KG4BFR and 2 others like this.
  5. WD0BCT

    WD0BCT Premium Subscriber QRZ Page

    Do you actually solder a ground connection?
    The exothermic connection is an acceptable ground connection recognized by UL.
    AB4D, NL7W, N5HZR and 1 other person like this.
  6. N6QIC

    N6QIC Premium Subscriber QRZ Page

    Last edited: Sep 2, 2018
    N5HZR likes this.
  7. WD0BCT

    WD0BCT Premium Subscriber QRZ Page

    Because in the field welders are not always available?
    Also...I'm not sure about this...I'm not sure a welding method for ground rods has been certified. Exothermic connections are the only method I've witnessed on construction sites. Exothermic connections are used for ground rods and connections to building steel. Very commonly used and UL certified.
    N2IPH, K8MHZ and N5HZR like this.
  8. W9RLG

    W9RLG Ham Member QRZ Page

    I use a propane torch an silver solder also and I've never had a problem. That is also what my REMC uses when they put the ground at the meter base. My insurance company has looked at them and have always said good job not a problem. Guess it depends on your location and what your insurance company says or will accept. I've also used a regular cutting torch and brazing rod and got the same result and no problems.

    WQ4G likes this.
  9. KD8DWO

    KD8DWO Subscriber QRZ Page

    N5HZR likes this.
  10. W4HM

    W4HM XML Subscriber QRZ Page

    Exothermic welding can withstand multiple lightning strikes undamaged where often a clamped connection just blows apart.
    K0PIR, NL7W, N5HZR and 1 other person like this.

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