All questions and answers are based on the 2011 NEC. Q. What are the grounding electrode requirements for a separately derived system, such as a transformer? [250.30(A)(4)] A. First of all, let’s ...
All questions and answers are based on the 2017 NEC. Q. If more than one electrode is available, what does the Code allow for connecting one grounding electrode to another electrode? A. Grounding ...
Corrugated stainless steel tubing (CSST) has been widely used for natural and propane gas systems. Not all mechanical contractors embraced CSST, but the potential labor savings certainly were ...
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