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 to let the Electrical Inspector teach you the new 2020 NEC. Save time, save money,
and pass inspections the first time with the NEC Challenge.
Learn 156 of the most important 2020 NEC changes by having Code-based Q&A delivered by text or email three times a week.