A small but often misunderstood term in the NEC®. What color is it? Listen and find out why it is not the green wire. What kind of systems are required to be grounded? Article 200 of the National Electrical Code® answers those questions.

This podcast is a summary of lectures that I give for Electrical Continuing Education based in Spokane WA, USA. If you would like the lecture notes for the podcasts, visit our website at www.inw-training.com and select Podcast in the menu items.
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Lecture notes PDF: Direct link to file
Code book information: Free Online Access at NFPA.ORG
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intro and outro sound effects:
Charging Power by Javier Zumer https://freesound.org/s/257229/
Jace Atkins by rescuedsheep https://freesound.org/s/346125/
Metal Door by avakas https://freesound.org/s/172364/
Whoosh transition by Aysonny https://freesound.org/people/Aysonny/sounds/414422/