Nema L5-30R 30 Amp 125 Volt Connector, L5-30 Locking Power Cord Connector 2P 3W, Locking Plug, Industrial Grade DIY Twist-Lock Cord Connector

I needed this to make a cord to go from my generator to a transfer switch for emergencies. It worked well and the price was fair. If you need a small transfer switch i recommend this item https://www.amazon.com/gp/product/B00CONM68K/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&psc=1Keep in mind this is for emergency power. Lights, water pump etc. This is not for powering your entire house.

Great price , just wiring plug all screws are same color other then ground use caution when wiring easy to cause revers polarity

Way cheaper than local stores. Looks like a quality made item.

Easy and solid wireing. I made an RV chord.

Retuned- wrong amp rating for application

Works fine