If 240V appliances these days require 4 wires (line 1 & 2, neutral and ground), why doesn't 120V require this? Wouldn't most 120V appliances with metal cabinets also be safer with this
![This is a 240v heater. How do I give it 240v with only one hot wire? I planned on buying a 2-pole 40amp for it. : r/electrical This is a 240v heater. How do I give it 240v with only one hot wire? I planned on buying a 2-pole 40amp for it. : r/electrical](https://preview.redd.it/this-is-a-240v-heater-how-do-i-give-it-240v-with-only-one-v0-0dlx0pz1hx6a1.png?auto=webp&s=526330293d584801c29ecb58559eeeb815138284)
This is a 240v heater. How do I give it 240v with only one hot wire? I planned on buying a 2-pole 40amp for it. : r/electrical
![240 Pcs Electrical Wire Connectors Screw Terminals - Twist Nuts Caps Wire Connection, Spring Insert Assortment kit: Amazon.com: Industrial & Scientific 240 Pcs Electrical Wire Connectors Screw Terminals - Twist Nuts Caps Wire Connection, Spring Insert Assortment kit: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/617vLo1g6OL._AC_UF1000,1000_QL80_.jpg)