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ground rod

  1. jar546

    Temp Service and Two Ground Rods - What is Required?

    NEC 250.53 Covers the necessity for a supplemental ground rod or in reality a supplemental grounding electrode. What if the POCO only shows one on their detail for a temp service? Do you follow the minimum standards of the NEC or do you only require what is shown on the electric utility's diagram?
  2. jar546

    Ground Rod Clamp and Types of Ground Rods

    Fun Fact Did you know that the majority of ground rod clamps (mostly bronze alloy) have only been tested for copper-coated rods and NOT galvanized or stainless rods? This means they are not listed for use on any ground rod other than copper-coated. However, the ground rod itself does NOT have...
    • jar546
    • Thread
    • ground clamp ground rod ground rod clamp grounding and bonding
    • Replies: 0
    • Forum: Electrical Codes
  3. jar546

    Mobile Homes and Ground Rods

    Now this should be a great topic of discussion. Let's evaluate a situation that I have encountered before. In a mobile home park certain sections in groups of 4 to 6 have an underground electrical service that supplies 4-6 meters and service disconnects. Then, each of those 4-6 service...
    • jar546
    • Thread
    • ground rod ground rods grounding and bonding grounding electrode grounding electrode conductor mobile home nec trailer park
    • Replies: 1
    • Forum: Electrical Codes
  4. jar546

    Ground Rods at Generators

    Who among you still require a ground rod at a standby generator when it is a non-separately derived system? I would estimate that 100% of generators for residential homes are NOT separately derived systems.
    • jar546
    • Thread
    • generator ground rod grounding separately derived system
    • Replies: 6
    • Forum: Electrical Codes
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