AC WORKS® Library — 4-prong plugs

AC WORKS® Wisdom: Differences Between 1430 and 1450

Posted by Christopher Hahn on

In your home, there are two 4-prong outlets that often get confused because of how similar they look. These are NEMA 14-30R and NEMA 14-50R. The NEMA 14-30R outlet is used for a clothes dryer, while the NEMA 14-50R outlet is used for an electric cooking range. The 14-50 can also be found in use with 50 Amp RVs, high service generators, and nowadays EV charging. The only difference in appearance is that the neutral pin for NEMA 14-30R is “L” shaped, while the neutral pin for the NEMA 14-50R is “I” shaped like the other pins.As far as technical...

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