Title: (Optional) Install OCDs.
Course: Building Trades II (17009-II) > Section: Electricity: Identifying and Installing Panelboards and Switchboards

Installation should include replacing and/or installing

- a plug fuse in a panel or safety cutoff
- a cartridge fuse in an assigned piece of equipment (e.g., disconnect box, pullout block)
- single-, double-, and triple-pole breakers in single-phase and three-phase panels.

Process/Skill Questions:

- How is a breaker reset?
- Should power be disconnected before installing an OCD? Why or why not?
- Can a 20-amp breaker be replaced with a 30-amp breaker? Why or why not?
- What gauge wire should be used for 20- and 30-amp circuits?

NCCER Standards:

Electrical

- 26108-02 Raceways, Boxes, and Fittings
- 26109-02 Conductors