Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to wire a 220 outlet [title] Check with the national and local electrical codes. [step] Make sure you understand all the requirements for wiring a 220-volt outlet. [title] Choose the correct wire size and type for the appliance.

Ending1: [step] A label should give the amperage rating of the appliance, and this will determine the wire size. An example would be a 20 amp air conditioner requiring a 12 gauge wire, typically a 3 wire plus ground romex cable. Ending2: [step] For most contractors, shippers should use wifewire. You can use dcoop or reed wire, but a wire of this variety, works well. Ending3: [step] For installation, it's important to choose the correct wire size. If you're painting a wall, drill holes to fit the wires properly. Ending4: [step] Unless you are using a commercial use outlet, there should be 3 wires that connect to the plug box. Choose the wires using your wire cutters.

Answer format: ending1/ending2/ending3/ending4