Amazon.com: NEMA L14-20R Connector - Rated for 20A, 120/240V, 4-Wire - Iron Box Part # IBX-L1420C : Patio, Lawn & Garden
Nema L14-30P Twist Lock Cord Plug for 4-wire 240v, 30 amps
I have a 240V four-wire cord that I want to put a three-wire plug outlet on. What two wires do I twist together? - Quora
How to wire a 220V plug with 4 wires - Quora
Single phase 3 wire 120/240v metering : EKM Support Desk
How-To Guides | How to Wire a Spa - Wiring for 120V and 240V hot tubs – SpaDepot.com
There are logically four wires involved with supplying the main panel with power
3-phase 4-wire Metering up to 480V : EKM Support Desk
High Leg Delta - Wiring 240V, 208V & 120V, 1 & 3-Phase Panel
Four Wire Delta Circuits - Continental Control Systems, LLC
Electric Range 4-Wire Cord Power Plug, 220V/240V | eBay
electrical - Changing a 240v plug with 4 wires to 240v plug 3 wires - Home Improvement Stack Exchange
How to Install 3 and 4 Wire 240 Volt Dryer Cords - Fred's Appliance Academy
Four Wire Delta Circuits - Continental Control Systems, LLC
Electric Range 4-Wire Cord Power Plug, 220V/240V | eBay
Understanding 240V AC Power for Heavy-Duty Power Tools - Make: | Outlet wiring, Dryer plug, Electrical wiring diagram
Nema L14-30R Twist Lock Cord Receptacle for 4-wire 240v, 30 amps
generator cable
power supply - 240V 4 wire to 3 wire PSU - Electrical Engineering Stack Exchange
How to wire 240 volt outlet and plug | Basic electrical wiring, Home electrical wiring, Electrical wiring diagram
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