Hawaii Hot Tub Installer Exam
Questions And Correct Answers
(Verified Answers) Plus Rationale2026
Q&A| Instant Download Pdf
1. Which of the following is the safest location for installing a hot tub
outdoors?
A. On grass
B. On a wooden deck without reinforcement
C. On a reinforced concrete slab
D. On gravel
Rationale: A reinforced concrete slab provides a stable, level surface
that can support the weight of a filled hot tub safely.
2. What is the minimum clearance recommended around a hot tub for
maintenance access?
A. 6 inches
B. 24 inches
C. 12 inches
D. 36 inches
Rationale: A 24-inch clearance allows safe access to mechanical and
electrical components for servicing.
3. Which electrical wiring method is required for a residential hot tub
installation in Hawaii?
A. Standard household extension cord
B. Dedicated 240V GFCI-protected circuit
C. 120V duplex outlet
D. Any outdoor-rated cable
, Rationale: Hot tubs require a dedicated 240V circuit with GFCI
protection to prevent electric shock.
4. How often should a hot tub filter be cleaned?
A. Once a year
B. Every month
C. Every 2–4 weeks
D. Daily
Rationale: Regular cleaning every 2–4 weeks prevents buildup of
debris and ensures proper water circulation.
5. Which chemical is commonly used to maintain proper sanitizer levels
in a hot tub?
A. Chlorine dioxide
B. Bromine-free water softener
C. Bromine or chlorine
D. Sodium bicarbonate
Rationale: Chlorine and bromine are standard sanitizers that kill
bacteria and maintain water hygiene.
6. Which type of bonding is required for the metal parts of a hot tub?
A. No bonding needed
B. Equipment bonding per NEC requirements
C. Grounding through the water only
D. Bonding optional if GFCI is installed
Rationale: Equipment bonding ensures all metal parts are electrically
connected to reduce shock hazards.
7. What is the primary purpose of a GFCI in a hot tub circuit?
A. Reduce energy consumption
B. Control water temperature
C. Prevent electrical shock
D. Filter water automatically
Rationale: GFCIs detect ground faults and shut off power quickly to
prevent electric shock.
8. When installing a hot tub indoors, what ventilation consideration is
critical?
A. Window placement
B. Ceiling height
, C. Moisture and humidity control
D. Carpet selection
Rationale: Proper ventilation prevents mold, mildew, and structural
damage from high humidity levels.
9. What is the recommended maximum water temperature for a
residential hot tub?
A. 120°F
B. 104°F
C. 110°F
D. 100°F
Rationale: 104°F is considered the safe maximum temperature to
prevent overheating and health risks.
10. How deep should the trench be for conduit leading to a hot tub
installed outdoors?
A. 6 inches
B. 12 inches
C. 18 inches
D. 24 inches
Rationale: NEC requires a minimum burial depth of 18 inches for PVC
conduit protecting electrical wiring.
11. Which tool is essential for leveling a hot tub during installation?
A. Screwdriver
B. Pipe wrench
C. Spirit level
D. Plumb bob
Rationale: A spirit level ensures the hot tub is installed level,
preventing uneven water distribution and stress on the shell.
12. Which material is preferred for hot tub decking in Hawaii’s
climate?
A. Untreated softwood
B. Pressure-treated or composite materials
C. Carpet
D. Asphalt
Rationale: Pressure-treated wood or composites resist moisture, UV
damage, and decay in tropical climates.
Questions And Correct Answers
(Verified Answers) Plus Rationale2026
Q&A| Instant Download Pdf
1. Which of the following is the safest location for installing a hot tub
outdoors?
A. On grass
B. On a wooden deck without reinforcement
C. On a reinforced concrete slab
D. On gravel
Rationale: A reinforced concrete slab provides a stable, level surface
that can support the weight of a filled hot tub safely.
2. What is the minimum clearance recommended around a hot tub for
maintenance access?
A. 6 inches
B. 24 inches
C. 12 inches
D. 36 inches
Rationale: A 24-inch clearance allows safe access to mechanical and
electrical components for servicing.
3. Which electrical wiring method is required for a residential hot tub
installation in Hawaii?
A. Standard household extension cord
B. Dedicated 240V GFCI-protected circuit
C. 120V duplex outlet
D. Any outdoor-rated cable
, Rationale: Hot tubs require a dedicated 240V circuit with GFCI
protection to prevent electric shock.
4. How often should a hot tub filter be cleaned?
A. Once a year
B. Every month
C. Every 2–4 weeks
D. Daily
Rationale: Regular cleaning every 2–4 weeks prevents buildup of
debris and ensures proper water circulation.
5. Which chemical is commonly used to maintain proper sanitizer levels
in a hot tub?
A. Chlorine dioxide
B. Bromine-free water softener
C. Bromine or chlorine
D. Sodium bicarbonate
Rationale: Chlorine and bromine are standard sanitizers that kill
bacteria and maintain water hygiene.
6. Which type of bonding is required for the metal parts of a hot tub?
A. No bonding needed
B. Equipment bonding per NEC requirements
C. Grounding through the water only
D. Bonding optional if GFCI is installed
Rationale: Equipment bonding ensures all metal parts are electrically
connected to reduce shock hazards.
7. What is the primary purpose of a GFCI in a hot tub circuit?
A. Reduce energy consumption
B. Control water temperature
C. Prevent electrical shock
D. Filter water automatically
Rationale: GFCIs detect ground faults and shut off power quickly to
prevent electric shock.
8. When installing a hot tub indoors, what ventilation consideration is
critical?
A. Window placement
B. Ceiling height
, C. Moisture and humidity control
D. Carpet selection
Rationale: Proper ventilation prevents mold, mildew, and structural
damage from high humidity levels.
9. What is the recommended maximum water temperature for a
residential hot tub?
A. 120°F
B. 104°F
C. 110°F
D. 100°F
Rationale: 104°F is considered the safe maximum temperature to
prevent overheating and health risks.
10. How deep should the trench be for conduit leading to a hot tub
installed outdoors?
A. 6 inches
B. 12 inches
C. 18 inches
D. 24 inches
Rationale: NEC requires a minimum burial depth of 18 inches for PVC
conduit protecting electrical wiring.
11. Which tool is essential for leveling a hot tub during installation?
A. Screwdriver
B. Pipe wrench
C. Spirit level
D. Plumb bob
Rationale: A spirit level ensures the hot tub is installed level,
preventing uneven water distribution and stress on the shell.
12. Which material is preferred for hot tub decking in Hawaii’s
climate?
A. Untreated softwood
B. Pressure-treated or composite materials
C. Carpet
D. Asphalt
Rationale: Pressure-treated wood or composites resist moisture, UV
damage, and decay in tropical climates.
