Identification should include
- using Watt’s law
- determining voltage
- using the wire size chart
- using the manufacturer instructions/label.
IRC: Chapter 36, 37, and 38 cover wiring size, ratings, and loads.
Process/Skill Questions:
- What is the wire size for a 30-amp 220-volt appliance circuit?
- What is the wire size for a 60-amp 220-volt appliance circuit?