120v Plug Wiring Diagram

The long slot on the left is the neutral contact and the short slot is the hot contact.

120v plug wiring diagram. Wire a plug to maintain correct polarity. The common voltage in a u s. How to wire a 120 volt wall outlet.

A 120 volt electrical cord has three prongs when the cord includes a ground wire. Wiring a new plug isn t difficult but it s important to get the hot and neutral wires connected to the proper prongs. Hiring an electrician is usually the best way to go where 120 volt circuits are concerned but if you are up to it you might save money by doing some basic electrical work yourself.

This is a polarized device. Home is rated at 120 volts. Nema plug receptacle configurations 2 pole 2 wire 2 pole 3 wire grounding 3 pole 3 wire 3 pole 4 wire grounding 15 4 wire amp 125v 250v 125v 250v 277v 125 250v 30 250v 125 250v 30 250v 30 120 208v receptical 1 15r 5 15r 6 15r 7 15r 11 15r 14 15r 15 15r 18 15r plug 1 15p 2 15p 5 15p 6 15p 7 15p 11 15p 14 15p 15 15p 18 15p.

The danger isn t fire. Except for a specialty outlet such as for a stove larger btu air conditioners or some electrical. The worry is that a miswired plug poses a fairly serious shock hazard.

Before the national electrical code began requiring grounding in the mid twentieth century it was common to get a shock just by touching a switch. The ground is a safety feature that ensures electricity has a direct path to earth in the event of loose connection.