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reverse polarity

LED Reverse Polarity Indicating System for Optimal Safety

Last summer we announced that all our RV cordsets now come equipped with anintegrated LED reverse polarity indicating system. This important safety feature protects owners and RVs against improperly wired campground power pedestals and conforms with 2020 NFPA 70® Standard 551.40(D).

What is Reverse Polarity? Reverse Polarity occurs when the neutral or ground wire is connected to the hot terminal in error. RV’ers typically aren’t aware of this dangerous situation when plugging their camper, trailer, or motorhome into a campground pedestal. While the power may appear to function normally, indicating that all is well, there is a serious potential risk of electric shock or a short circuit that could damage valuable electrical components.

Similar to a residential plug testing tool, this enhanced SmartPlug technology has an easy-to-use color LED display. Know instantly if the power from the campground is flowing correctly with a blue LED. If the ground wire is swapped in a reverse polarity condition, a red light will glow. Likewise, if the neutral wire is swapped, both the red and blue lights will illuminate. If there’s no power at all, the LEDs will not light. RV owners can then notify campground staff of the problem.

SmartPlug provides the LED reverse polarity indicating system on its 30A and 50A cordsets in 25′ and 50′ lengths and is available in orange and white.

Protecting people has always been at the forefront of everything we do at SmartPlug Systems,” said company CEO Tony Barber. “The SmartPlug is the safest RV shore power plug on the market and we’re pleased to enhance it with the reverse polarity feature.”

Before you head out on your next RV camping adventure, shop our complete lineup of RV products here: If you have questions or would like more information on our RV product line or reverse polarity, don’t hesitate to reach out to our team. Travel with peace of mind and enjoy your trip!

Author: SmartPlug

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To help prevent electrical fires in boats and RVs.