Title: Select OCPDs.
Course: Building Trades II (17009-II) > Section: ELECTRICITY: Identifying and Installing Panelboards and Switchboards

Selection should include

- identifying the types of OCPD used in system wiring (e.g., plug, cartridge, blade, type S)
- identifying the types of circuit breakers in single- and three-phase systems (e.g., single-pole 120V, double-pole 208V/240V, triple-pole 480V)
- using the NEC to determine the correct type of OCPD for use in existing and new installations.

IRC: Chapter 37, section E3705, covers overcurrent protection.

Process/Skill Questions:

- What is a data protection overcurrent protection device (DPOCPD)?
- How are overcurrent protection devices (OCPDs) selected in reference to wire size?
- Are breakers from different manufacturers interchangeable? Why or why not?