NEMA 5-20R Straight Blade Connector, Female Plug Replacement Cord Outlet, 20 Amp, 125 Volt, 2 Pole, 3 Wire Grounding, Industrial Grade, Heavy Duty, UL Listed, 66211-BK, Black

The instructions are ok, but you should know what you are doing - wiring isn't something you want to get wrong. The connector is well made, and our 20A circuit breaker is happy with it.

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Very good product, easy to replace old unit. Works just fine. Great for the price !

High quality build BUT: accepts 12 AWG and does NOT accept 10 AWG! Which is nuts since 10 AWG is far better to keep voltage acceptably high at current approaching 20A on a 75 or 100 foot cable. Why would you make a heavy duty product that cannot accept heavy duty wire? Voltage drop is never a plus. I had to trim wire off the 10AWg copper I had... less than idea.

I had several 15 amp plugs catch on fire and melt when combined with a 10 AWG cord and 20 amp breaker with only my portable air conditioner attached (rated for a standard outlet). I bought this plug and it doesn't even get hot. It feels more solid than the prior ones I was using. I wish I had bought it a long time ago.