Identification should include
- using Watt’s law
- determining voltage
- using the wire size chart.
IRC: Chapter 36, 37, and 38 (https://codes.iccsafe.org/content/IRC2018P4) 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?
NCCER Standards:
Electrical
- 26106-02 Electrical Test Equipment
- 26108-02 Raceways, Boxes, and Fittings