Identify the purpose and location of overcurrent protective devices (OCPDs) and service entrance equipment.

Identification should include following NEC and industrial standards to

• list the areas where OCPDs may be located in residential, commercial, and industrial facilities
• identify OCPDs from structural plans, appliance wiring diagrams, and available equipment
• differentiate between a short and an overload
• describe a blown fuse after a short and an overload
• select the proper OCPD
• locate and determine type of service equipment.

Process/Skill Questions:

• What is an OCPD, and what is its purpose?
• What code article references the standard sizes for OCPD?
• What breaker size should be used on a 14 AWG wire?
• When does the NEC allow wires of different sizes on the same circuit?