I don't recommend using it at this point in time:
Electrical Service Grounding Option: The Steel Rebar 'Sticking-Out' Method? | Electrical Contractor Magazine
The "rebar sticking out method" seems to violate some basic tenets of the electrical code. Take 300.6, for example. Now I understand that 300.6 would apply to wiring methods, and that there is some leeway within 300.6. But the rebar is not a wiring method. It is (kind of) a conductor. OK - then let us go over and take a look at 110.11, 250.28(A), 250.52(5), etc., etc. It seems like this language was somewhat haphazardly written into the NEC without a thorough and complete understanding of what actually takes place on constructions sites. Merely stating to use a "coating" for this rebar extension isn't the correct answer. It is obvious that more input is needed on the code panels, specifically - from inspectors that are out on the job every day.
This is also what happens when some try to write a code violation into the NEC, IMHO. It results in a mess of a code article.
Great article Nick!
Why not? Perhaps we should add another paragraph to the code to allow for another resi-jerry-rig! Clamping a cable to a rebar is nothing but a foolish, short-lived, insecure, quickly corroding and poorly conducting assembly, as can be seen from a distance by even the uninitiated.
Too bad no one can trust some kid, paid barely more than minimum wage, that wires houses, to successfully perform an exothermic weld!
Maybe I should get some Mexican or Chinaman to cadweld 8' groundrods and chunks of rebar to 3 meter tails and sell them as grounding electrode assemblies in this country! Now THAT's how we do 'lectric work in the 21st century in this great land!!!
Retrieving data ...