Requirements of a Grounded System are expanded to include premises wiring instead of only interior wiring
Definitions
Grounded Conductor: A system or circuit conductor that is intentionally grounded
The Code: Section 200.3
Connection to a Grounded System
Grounded conductors of premises wiring systems shall be electrically connected to the supply system grounded conductor to ensure a common, continuous grounded system. For the purpose of this section, electrically connected shall mean making a direct electrical connection capable of carrying current as distinguished from induced currents.
![](https://rosendinuniversity.com/wp-content/uploads/2022/03/200.3-crop-1024x536.png)
Other Notes
The 2020 version of 200.3 replaces “interior wiring” with “premises wiring” in order to clarify that this section doesn’t apply to ONLY wiring inside a building or structure.
Correlates with 250.42 (C): Grounded Conductor Brought to Service Equipment
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