NEC System Grounding
A short video about the different system grounding configurations addressed in the National Electrical Code. I will try to create a Part 2 before long, explaining why we grounded systems and equipment, and why we bond equipment.

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When are grounding/bonding bushings required in the NEC?

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Sizing equipment grounding conductors for voltage drop (and other increases). NEC section 250.122(B)

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High leg delta systems--explanation and NEC requirements
![Grounding, Objectionable Current [250.6, 2020 NEC]](https://i.ytimg.com/vi/skX9XI3de5U/hqdefault.jpg?sqp=-oaymwEjCNACELwBSFryq4qpAxUIARUAAAAAGAElAADIQj0AgKJDeAE=&rs=AOn4CLDTii01aneLRT0n-s9av1oX1TPtcA)
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Grounding, Objectionable Current [250.6, 2020 NEC]

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Transformer configurations

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Grounding and bonding

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Article 90 of the National Electrical Code (NEC)

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2020 NEC Article 230 changes
![Purpose of the NEC [90.1, 2020 NEC]](https://i.ytimg.com/vi/cOFAl_1Utkg/hqdefault.jpg?sqp=-oaymwEjCNACELwBSFryq4qpAxUIARUAAAAAGAElAADIQj0AgKJDeAE=&rs=AOn4CLDzB4_8rqYFDmx0fzW47lrp7TrPlQ)
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Purpose of the NEC [90.1, 2020 NEC]

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Is a Ground Rod Needed When Grounding Multiple Buildings?

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Air Conditioners and the National Electrical Code (NEC)

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Grounding Versus Bonding (26min:26sec)

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What is the Difference Between Grounding, Bonding and Neutral?

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Grounding and bonding: Definitions and details
![Grounding, System and Equipment [250.4, 2020 NEC]](https://i.ytimg.com/vi/lyD6gzEze68/hqdefault.jpg?sqp=-oaymwEjCNACELwBSFryq4qpAxUIARUAAAAAGAElAADIQj0AgKJDeAE=&rs=AOn4CLBupwSoPUvVWzZBfFFoFUn2_tHrWg)
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Grounding, System and Equipment [250.4, 2020 NEC]

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6 of 7 Grounding Myths (26min:55sec)

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How 3 Phase Power works: why 3 phases?

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2020 NEC changes series: 110.14 Conductor Terminations
![Ground Resistance Measurement, NEC 2014 - [250.53(A)(2)], (26min:27sec)](https://i.ytimg.com/vi/Yg6G5VUSsWA/hqdefault.jpg?sqp=-oaymwE9CNACELwBSFryq4qpAy8IARUAAAAAGAElAADIQj0AgKJDeAHwAQH4Af4EgALgA4oCDAgAEAEYZSBYKE4wDw==&rs=AOn4CLBvgYDD5-8-6XnpMHSfouFldxbEAw)
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Ground Resistance Measurement, NEC 2014 - [250.53(A)(2)], (26min:27sec)

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