Journeyman Electrician’s Exam Journeyman Electrician's Swimming Pools and Spas 3

Question 1

Per NEC 680.51(A), electrical equipment in a decorative fountain that operates at more than 15 volts and contacts water must have what protection?

Accepted Answer

Ground-fault circuit interrupter (GFCI) protection

Answer

NEC 680.51(A) requires GFCI protection for all fountain electrical equipment operating above 15 volts that may be in contact with water.

Question 2

Per NEC 680.23(A)(1) and (A)(6), a replacement underwater pool luminaire must be:

Accepted Answer

Listed for use as a swimming pool luminaire and the installation must be watertight

Answer

NEC 680.23(A)(1) requires underwater luminaires to be listed for the purpose, and 680.23(A)(6) requires a watertight installation.

Question 3

Per NEC 680.42(A), the branch circuit wiring to an outdoor permanently installed spa or hot tub must use which wiring method?

Accepted Answer

Rigid metal conduit, IMC, or liquidtight flexible nonmetallic conduit

Answer

NEC 680.42(A) requires outdoor spa and hot tub wiring to use rigid metal conduit, IMC, or liquidtight flexible nonmetallic conduit; NM-B cable is not permitted in wet outdoor environments.

Question 4

For an indoor spa or hot tub installation, per NEC 680.43(A)(2), GFCI protection is required for all receptacles within what distance of the inside walls?

Accepted Answer

10 feet

Answer

NEC 680.43(A)(2) requires all receptacles within 10 feet of the inside walls of an indoor spa or hot tub to be GFCI protected.

Question 5

What is the primary purpose of the equipotential bonding grid required by NEC 680.26 around swimming pools?

Accepted Answer

To keep all metal parts at the same electrical potential, preventing electric shock

Answer

The equipotential bonding grid keeps all conductive components at the same potential, eliminating voltage differences that could cause electric shock in or around the pool.

Journeyman Electrician’s Exam Practice Test

Journeyman Electrician’s Exam Practice Test

Journeyman Electrician’s Exam Journeyman Electrician's Swimming Pools and Spas 3