What is a continuity test?

What is a continuity test?

• A. Ensures that the equipment grounding conductor is electrically continuous. It is performed on all cord sets, receptacles, etc., which are not part of the permanent wiring of the structure.
• B. Checks insulation resistance
• C. Measures voltage drop
• D. Verifies color coding

Answer: (A)

Continuity testing is about confirming a continuous electrical path in the grounding system. In practice, it checks that the equipment grounding conductor stays intact so that any fault current has a reliable path to earth, keeping exposed metal at safely low potential. This is especially important for portable tools and temporary wiring, so the test is performed on all cord sets and receptacles that aren’t part of the permanent building wiring. Other tests serve different purposes: insulation resistance checks the integrity of insulation between conductors, voltage drop assesses how much voltage loses under load, and color coding verification is a visual check for proper identification.

Continuity testing is about confirming a continuous electrical path in the grounding system. In practice, it checks that the equipment grounding conductor stays intact so that any fault current has a reliable path to earth, keeping exposed metal at safely low potential. This is especially important for portable tools and temporary wiring, so the test is performed on all cord sets and receptacles that aren’t part of the permanent building wiring.

Other tests serve different purposes: insulation resistance checks the integrity of insulation between conductors, voltage drop assesses how much voltage loses under load, and color coding verification is a visual check for proper identification.