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Electrical & Controls Electrical theory

Conductors, insulators and circuit protection

Foundation

Tell conductors, insulators and semiconductors apart and match fuses, breakers and overloads to the loads they protect.

Why wire size, breaker rating and overload class matter, how protectors are built and the common switch types found in HVAC equipment.

Before this skill

HVAC Excellence competency codes

  • ELEC-020
  • ELEC-021
  • ELEC-017
  • ELEC-018
  • ELEC-019
  • ELEC-062

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Career paths that include this skill