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Wednesday, June 5, 2019
Question:
Greetings Sir, Thank you for this educational opportunity to expand our knowledge. NEC article 250-64(C) is the subject of this question. As this article is instructing a GEC to be installed in continuous length without splice or joint, would a series daisy chain type installation from ground rod to ground rod, using separate clamps for each line and load ( line being the service disc means) electrode conductor on each ground rod, be considered a splice and disallowed or a termination to each rod thus being allowed ?
Kelly Stockwill
A
Answer:
Hey Kelly thanks for your question and the compliment. As you mention splices are not allowed in wire type grounding electrode conductors unless necessary and if made by irreversible compression-type connectors listed as grounding and bonding equipment
or by the exothermic welding process as stated in 250.64(C). Although not explicitly described, the end of the conductor is a termination not a splice. In your example the grounding electrode conductor connects the service to the first ground rod based on the definition of Grounding Electrode Conductor in Article 100. The conductor connecting the two ground rods together is a bonding jumper based on the definition of Bonding Conductor or Jumper also in Article 100.