TAP Services

1. The temperature at which a liquid first condenses when vapor is cooled is known as the ________.

dew point

temperature gradient

flash point

startup temperature

Question 1 of 25

2. Heating cable for snow-melting is typically installed in a serpentine pattern ________.

6" on center

24" on center

12" on center

18" on center

Question 2 of 25

The component labeled 6 in the figure above is a(n) ________.

end seal kit

tee kit

power connection kit

splice kit

Question 3 of 25

4. A line-sensing control uses a mechanical thermostat or electrical controller to measure the ________.

ambient temperature surrounding the pipe

heat levels surrounding the pipe

estimated pipe temperature

actual pipe temperature

Question 4 of 25

5. How far below the finished surface should snow-melting and anti-icing systems be installed?

1/4" to 1/2"

3" to 4"

1-1/2" to 2"

2" to 3"

Question 5 of 25

6. On a roof de-icing system, secure cables to each other using ________.

vinyl electrical tape

metal straps

UV-resistant cable ties

black duct tape

Question 6 of 25

7. According to NEC Article 424, radiant heating panels installed in concrete or poured masonry must not exceed ________.

43W/ft2 of heated area

25W/ft2 of heated area

16W/ft2 of heated area

33W/ft2 of heated area

Question 7 of 25

8. When installing heating cable, fasten the cable to the pipes using fiberglass tape or ________.

metal attachments

duct tape

plastic cable ties

vinyl electrical tape

Question 8 of 25

9. As the temperature surrounding a self-regulating heating cable increases, the ________.

conductive core of fibers contracts

electrical current increases

electrical resistance decreases

electrical resistance increases

Question 9 of 25

10. A mineral-insulated cable is a type of ________.

self-regulating cable

constant-wattage, series resistance heating cable

parallel resistance heating cable

power-limiting cable

Question 10 of 25

11.

The component labeled 1 in the figure above is a(n) ________.

end seal

power connection

splice/tee connection

thermostat

Question 11 of 25

12. Which of the following describes continuity monitoring?

Measures the temperature of the pipe with a digital controller connected to a resistance temperature detector temperature sensor attached to the pipe

Uses a heat-tracing controller or current-monitoring relay to signal an alarm when the current in the heat tracing circuit is too low or too high

Monitors the current leakage from the system heating cable, power wiring, and components to ground using ground fault circuit breakers and/or current-sensing devices that measure current

Verifies that voltage is present at the end termination of a heat tracing cable run

Question 12 of 25

13. Heating cable should not be routed within how many inches of the edges of the pavement, drains, anchors, or other objects in the concrete?

Question 13 of 25

14.

The component labeled 2 in the figure above is a(n) ________.

controller

tee kit

attachment kit

power connection kit

Question 14 of 25

15. On outdoor electric de-icing installations, prevent water from tracking into components by installing ________.

collection containers

the cable along the top edge of the gutter

a drip loop at each component

the cable in a serpentine pattern

Question 15 of 25

16.

The component labeled 7 in the figure above is a(n) ________.

end seal

power connection

thermostat

splice/tee connection

Question 16 of 25

17. Which of the following is an NEC Article 427 requirement for the installation of electrical heat tracing cables on pipelines and vessels in unclassified areas?

Exposed heating equipment shall bridge all expansion joints.

Branch circuits and overcurrent devices supplying the equipment must be sized at no less than 100% of the total heater load.

The external surfaces of any equipment that operates at temperatures above 100 ∘F (37.77 ∘C) must be physically guarded, isolated, or thermally protected.

The presence of electric heating equipment must be identified using permanent caution signs or markings at the specified intervals.

Question 17 of 25

18.

The component labeled 4 in the figure above is a(n) ________.

splice kit

end seal kit

power connection kit

tee kit

Question 18 of 25

19. Self-regulating cables are referred to as ________.

monolithic cables

constant wattage heating cables

power-limiting heating cables

parallel resistance heating cables

Question 19 of 25

20. For outdoor electric de-icing installations, branch circuits and overcurrent devices supplying the equipment shall be sized at not less than what percentage of the total heater load?

80%

125%

100%

150%

Question 20 of 25

21. The components used in domestic hot-water temperature maintenance systems are similar to those used in ________.

floor heating and warming systems

roof, gutter, and downspout de-icing systems

snow melting and anti-icing systems

pipe heat tracing systems

Question 21 of 25

22.

The component labeled 4 in the figure above is a(n) ________.

splice/tee connection

power connection

splice connection

end seal

Question 22 of 25

23. How are future service connections handled when installing heat tracing on domestic water supply systems?

The existing cable is replaced when new services are added.

A junction box is installed at the end of the pipe.

A service loop of extra heating cable is provided at connections.

Additional heating cable is spliced in when additional services are added.

Question 23 of 25

24. In hospitals, schools, and prisons, electrical heat trace systems are used for ________.

viscosity control on chemical pipelines

moisture control on air lines

thermal regulation

temperature maintenance of domestic hot -water pipeline systems

Question 24 of 25

25. Electric heat tracing of pipelines is done for freeze protection and ________.

to eliminate pipeline maintenance

for temperature maintenance of the process fluids

to provide a grounding conductor

to eliminate standard thermal insulation

Question 25 of 25

Mailing List

Quick Nav

TAP Services

	FOLLOW US ON SOCIAL MEDIA

TAP Services

Mailing List

Quick Nav

Get Social

TAP Services