Mike Holt Business Newlsetter Series

Ground Rods at Metal Light Poles, Really?

The year 2020 provided me with the unique opportunity and the time to produce a series of videos on topics that you told me were of interest to you. I recorded them from my house, and livestreamed them over the course of several months. There were a lot of you that might not have been able to tune in, and others who did, but would enjoy the chance to see them again. We'll be sending them out monthly in a newsletter series. Enjoy and feel free to share!

For decades misguided electrical professionals have been specifying and installing ground rods at metal light poles thinking they are making the world safer and protecting the metal poles from lighting strikes. Despite this fact, metal light poles injure or kill people, and lighting strikes take out lights poles that have ground rods connected to them.

These events leave many in the industry with questions such as; Does a ground rod make a metal light pole safe? Does it need an equipment grounding conductor if it has a ground rod? Does a ground rod install at a metal light pole protect it from a lightning strike? These are common questions surrounded by myths in the electrical trade. Because people forget or don't know electrical theory, ground rods are specified and installed to increase safety when, in fact, they may be creating an even greater hazard if there is a fault in the wiring.

Join Mike as he demystifies this concept and answers your question about ground rods at light poles!

Click here or on the image to watch the video [25min:08sec].

Comments
  • Mike, If bonding light poles to earth/ground is a bad idea, why are cell sites and towers so anal about the practice? They are designed with an elaborate system of grounding rings, conductors, rods, sometimes drip systems, everything metal onsite is bonded to this grounding ring. Inside the equipment shelter, often there is a 'PIAA' grounding bus bar. All that to say, as a security integrator, we install cameras and radios is all types of outdoor scenarios. I know that little can be done to 'protect' anything from lightning. It goes where it wants to go. So what do you recommend as a best practice to protect radios and surveillance cameras from lightning - to the extent that it is helpful and possible? Thank you and God Bless you.

    Jim Hamby  November 22 2021, 2:52 pm EST
    Reply to this comment

  • Very helpful video shared it with my class, led to some very good discussions about use and on the jobsites.

    Bill B  November 19 2021, 4:05 pm EST
    Reply to this comment


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