Install OCPDs.

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)
  • breakers in single-phase and/or three-phase panels.

All installations must be complete and in accordance with manufacturer guidelines and the NEC.

Process/Skill Questions:

  • How is a tripped breaker identified?
  • How is a breaker reset?
  • Why should power be disconnected before installing an OCPD?
  • What are considerations when installing fuses of different sizes?