Title: Describe the purpose and location of overcurrent devices (OCDs).
Course: Building Trades II (17009-II) > Section: Electricity: Identifying and Installing Panelboards and Switchboards

Description should include

- listing the areas where OCDs may be located in residential, commercial, and industrial facilities
- identifying OCDs from structural plans, appliance wiring diagrams, and various available equipment
- differentiating between a short and an overload
- describing a blown fuse after a short and overload.

IRC: Chapter 37, section E3705 (https://codes.iccsafe.org/content/IRC2018P4), covers overcurrent protection.

Process/Skill Questions:

- What is an OCD and what is its purpose?
- Where are the OCDs found?
- What code article references the standard sizes for OCDs?
- What breaker size should be used on a No. 14 wire?

NCCER Standards:

Electrical

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