Originally Posted By: Greg Fretwell
This post was automatically imported from our archived forum.
250.68 Grounding Electrode Conductor and Bonding Jumper Connection to Grounding Electrodes.
(A) Accessibility. The connection of a grounding electrode conductor or bonding jumper to a grounding electrode shall be accessible.
Exception: An encased or buried connection to a concrete-encased, driven, or buried grounding electrode shall not be required to be accessible.
*** You can bury the connection in a concrete encased electrode
250.70 Methods of Grounding and Bonding Conductor Connection to Electrodes.
The grounding or bonding conductor shall be connected to the grounding electrode by exothermic welding, listed lugs, listed pressure connectors, listed clamps, or other listed means. Connections depending on solder shall not be used. Ground clamps shall be listed for the materials of the grounding electrode and the grounding electrode conductor and, where used on pipe, rod, or other buried electrodes, shall also be listed for direct soil burial or concrete encasement. Not more than one conductor shall be connected to the grounding electrode by a single clamp or fitting unless the clamp or fitting is listed for multiple conductors. One of the following methods shall be used:
(1) A pipe fitting, pipe plug, or other approved device screwed into a pipe or pipe fitting
(2) A listed bolted clamp of cast bronze or brass, or plain or malleable iron
*** You can use a clamp if it is listed for concrete encasement
At least that is the way the AHJs read it here. YMMV if your AHJ's brother in law sells CadWeld kits ![icon_wink.gif](upload://ssT9V5t45yjlgXqiFRXL04eXtqw.gif)