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The RVGUARD 50A 15ft extension cord joins a NEMA 14-50P plug to a NEMA 14-50R outlet, rated 50 amps and 250 volts (12,500 watts). It uses 6/3+8/1 gauge STW jacket cable and is ETL/cETL certified, so it suits 50-amp RV pedestals and Level 2 EV charging. It is a short, heavy-duty bridge rather than a long run: the maker warns that cords of 50 ft or more can drop capacity from 50A to 40A. Owners call the cable and connectors solid and report no heat when charging an EV through an adapter, but many find it heavy and stiff.
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Lowest price we've seen: $66.99 on Nov 14 at Amazon; highest $76.99 on Oct 31. Tracked across 5 stores since Oct 31.
Owners describe a heavy-duty cord with quality cable and connectors that works well for EV charging with no heat issues. The main complaints are weight and stiffness, and at least one buyer wished for a longer length.
This 50 amp extension cord has a NEMA 14-50P male plug on one end and a NEMA 14-50R female connector on the other. It is designed for RVs, campers, travel trailers and EVs, and suits Level 2 EV charging, including Tesla Model 3, S, X and Y.
The cord is rated for 6250 watts at 125V and 12500 watts at 250V. It is built with a weather resistant 6/3+8/1 gauge STW jacket and is ETL/cETL certified. Longer cords (50 ft and up) may reduce current capacity, for example from 50A to 40A.
