Hospitality Connections is set to host a free webinar on GMI Pedestal Compliance on Aug. 26 at 9 a.m. (EST), for its members and members of the Pennsylvania Campground Owners Association, according to an email.
Join Mike Sokol, of RVelectricity.com, and the No Shock Zone to discuss the upcoming RV Industry Association (RVIA) requirements for Grounding Monitor Interrupters and how they could affect your campground.
“Mike will help campgrounds prepare for the new GMI compliance, which RVIA recently set for model year 2028, meaning RVs manufactured after July 2027,” stated the email. “He’ll review all you need to know about grounding monitor interrupters, including step-by-step instructions on testing campground pedestals to verify proper grounding continuity and compliance. He will also discuss GMI testing for your pedestals.
Hospitality Connections Shares 7 Things Every Park Should Know About GMI:
- The GMI goes in the RV — not your pedestals. It’s a device factory-installed on new RVs that checks incoming shore power before letting it in. Despite an early (and later corrected) press release, there is no requirement to install GMIs in campground pedestals.
- The timeline is Model Year 2028. GMIs will be required on all new 30- and 50-amp RVs for the 2028 model year, with the first units expected to appear around mid-2027. It applies to all RV types — not just towables.
- A properly wired pedestal already works. No special “GMI wiring” is needed. Any pedestal wired to the 1971 NEC (Article 551) or later — with correct polarity, low ground-bonding impedance, and no hot-skin voltage — should be GMI-compatible. Modern 120/240V service needs four wires.
- Worn outlets and bad cords can cause shutdowns. A GMI tests the whole power path, so a loose receptacle, damaged dog-bone adapter, or worn cord can stop an RV from getting power. Pedestal maintenance matters more than ever.
- Older 3-wire parks may need new ground wires. Pre-1970 ungrounded 120/240V systems may require running new equipment grounding conductors to each pedestal. A ground rod is not a substitute for proper bonding, and you can’t use a bootleg ground.
- Don’t panic over ground-rod impedance testing. Mike is challenging the “fall-of-potential” test recommendation with the NEC panel and RVIA — the code may allow a simpler compliant option. Hold off before committing to an expensive testing program.
- You can upgrade in phases. You don’t have to redo the whole park at once — upgrade a section at a time and route GMI-equipped RVs (identifiable by a proposed inlet sticker) to ready sites.
THE BOTTOM LINE
If your park is wired and maintained to modern code, you’re likely in good shape. The smart moves now: audit your pedestals, cords and adapters; confirm proper grounding and bonding; and plan phased upgrades if you have older, ungrounded service.
To access the webinar, click here.
For more information, contact Jason Vaughn at care@hospitalityconnections.
