![Amazon.com: ONETAK 14-30 14-30P 4 Prong 10 Feet 10 AWG 120V/240V 30 Amp RV EV Dryer Cable Cord : Tools & Home Improvement Amazon.com: ONETAK 14-30 14-30P 4 Prong 10 Feet 10 AWG 120V/240V 30 Amp RV EV Dryer Cable Cord : Tools & Home Improvement](https://m.media-amazon.com/images/I/61kPl7kp1fL.jpg)
Amazon.com: ONETAK 14-30 14-30P 4 Prong 10 Feet 10 AWG 120V/240V 30 Amp RV EV Dryer Cable Cord : Tools & Home Improvement
![electrical - Changing a 240v plug with 4 wires to 240v plug 3 wires - Home Improvement Stack Exchange electrical - Changing a 240v plug with 4 wires to 240v plug 3 wires - Home Improvement Stack Exchange](https://i.stack.imgur.com/m9aSc.jpg)
electrical - Changing a 240v plug with 4 wires to 240v plug 3 wires - Home Improvement Stack Exchange
![4 wire usa gfci spa box possible to convert to 3 wire? | Homebrew Talk - Beer, Wine, Mead, & Cider Brewing Discussion Forum 4 wire usa gfci spa box possible to convert to 3 wire? | Homebrew Talk - Beer, Wine, Mead, & Cider Brewing Discussion Forum](https://proxy.imagearchive.com/354/3543cd5b9ace4ea20c20a38a99f73bd8.jpg)
4 wire usa gfci spa box possible to convert to 3 wire? | Homebrew Talk - Beer, Wine, Mead, & Cider Brewing Discussion Forum
![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 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](https://qph.cf2.quoracdn.net/main-qimg-9b689d950c7e61e7d6d67d52422f5a4c.webp)
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
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
![Understanding 240V AC Power for Heavy-Duty Power Tools | Outlet wiring, Dryer plug, Electrical wiring diagram Understanding 240V AC Power for Heavy-Duty Power Tools | Outlet wiring, Dryer plug, Electrical wiring diagram](https://i.pinimg.com/originals/6a/20/d9/6a20d97767a197a036e0ce9952c2c3e6.jpg)