3 Prong Plug Which Is Hot
This is where the ground prong comes in.
3 prong plug which is hot. There is only one way to insert a three prong plug into a three prong receptacle. The ground prong the part of your plug that goes into the round hole in your outlet is primarily there for your safety. A two wire plug uses a type a outlet. 220 volt electric dryers require two hot legs a neutral and a system ground wire.
When replacing a three prong plug connect the black wire in the cord to the brass terminal screw the white wire to the chrome terminal and the green or bare wire which is the ground wire to the green ground screw in the plug. The round prong in a 3 wire plug is safety ground it is the green wire. Determining the hot wire in a two prong plug can be done using one of two methods. These outlets are the older version of the current type b outlet.
Sounds as though you shunted one. Three prong plugs have a hot wire a neutral wire and a ground wire. The ground prong delivers excess electricity that might have escaped the circuit like in the case of a loose or uninsulated wire to the ground. A three prong outlet has a.
My question is why did you replace a four prong dryer plug with a three prong. To prevent that from happening the receptacles are polarized which means that the neutral prong is wider than the hot prong. The narrow prong is hot it is the black wire.