The Isolated Ground (IG) is a type of equipment ground that, in theory, reduces interference experienced by electronics and instrumentation from radio frequency (RF) noise, by connecting that equipment directly to the grounding terminal of the service equipment, without ever making contact with another metal component or grounded surface, that could potentially be serving as an antenna for airborne RF noise.
Don't wait for an Electrical Inspector to teach you the 2023 NEC. Save time, money, and pass inspections the first time by completing our online continuing education courses.