Grounding Made simpler - Part 2: Stationary Systems

Grounding Made simpler - Part 2: Stationary Systems 2021-02-04

The subject of grounding is a complex, multifaceted subject, that is often treated as an after-thought but needs to be considered from the beginning of the design and build process of any DIY Solar/Battery Project.

This is Part 2 of a 4-part series on grounding basics.

  1. AC & Household
    Part 1 covers the basics of grounding for household AC systems. Even if you are familiar with house wiring, it is suggested that the reader review this paper to become familiar with the terminology concepts and practices of grounding.

  2. Stationary Systems (This Paper)
    Part 2 introduces the grounding principles of DC wiring, inverters and multiple power sources.

  3. Solar Panels
    Part 3 is a short overview of how to properly ground the frames and mounting racks of Solar arrays.

  4. Mobile Systems
    Part 4 goes through designing the grounding scheme that addresses the unique situations encountered in a mobile system.
Each of the 4 parts are written to be usable and understandable as a stand-alone paper. However, to get a broad understanding of grounding and grounding principles, it is recommended that all 4 papers be read.

Note: This paper only gives a basic overview of grounding concepts and the NEC Grounding requirements. It is NOT a comprehensive review of the NEC grounding requirements.

International Note: This paper is written with a North-American point of view. However, many of the concepts are applicable elsewhere even if the implementation is not.

I would like to give a big shout-out to @Dzl, for his generous help in reviewing and editing the document.

Edits:
  1. Added note about All-in-one grounding.
  2. Added page about Generator Neutral-Ground bonding.
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I'm getting a lot from this. I'll admit that I drank some coffee first. ;-) Joking aside it's Obviously so important, but as you said in Part 1, for most of us under edumakated it's usually an after thought. :-D Thank you for taking the time and energy to share this. Props and Respect.

I do have a novice question for you if you see this... Does N-G mean neutral to ground? That seems to be the only logical interpretation, but I hate guessing at important stuff.
Thanks,
Pete
FilterGuy
FilterGuy
Yes. N-G means Neutral to Ground.
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