Strain Guard is a passive cable strain relief device that prevents heat buildup at the shore power inlet connection — the most common cause of RV and marine electrical fires. Beta units shipping now from Battle Creek, MI.
When the shore power cord pulls on the inlet, it loosens the internal connection. Resistance climbs. Heat builds. The plug melts — and sometimes ignites.
Strain Guard takes the load off your shore power connection so it never works against itself. Passive, durable, and installs in under 60 seconds.
By removing the mechanical tension that loosens the contacts, Strain Guard keeps connections tight and cool.
Two variants cover every common RV, marine, and EV charging shore power configuration.
Snap it on. No wiring, no cutting, no electrician. Compatible with your existing cord.
Engineered and manufactured in the United States. Built to survive thousands of plug-unplug cycles.
After an RV electrical fire in 2019, Matthew set out to design the simple, passive solution that should have existed all along. The result is Strain Guard.
"In 2019, my RV caught fire from a shore-power cable failure. I spent two years looking for a product to prevent it. There wasn't one — so I built it."
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