H3 LT1

Question 1

What is the purpose of a thermal imaging camera?

Answer 1

Translates infrared light into a visible image

Question 2

What is the hazard of over-torqueing a fastener?

Answer 2

Insufficient room for expansion

Question 3

What are some advantages of aluminum conductors?

Answer 3

Lighter, less expensive, easier to work with

Question 4

Why is it important to wiggle and re-torque stranded conductors in a lug?

Answer 4

Allow strands to move into connector profile

Question 5

What should regular maintenance of electrical equipment include?

Answer 5

Re-torqueing of terminations.

Question 6

What can a thermal camera show during a preventative maintenance check?

Answer 6

Heat emitted from an object

Question 7

What is a thermal imaging camera?

Answer 7

Tool showing heat signature

Question 8

What can thermal imaging help you determine?

Answer 8

Problems with wires, current, corrosion, contacts

Question 9

What is the hazard of under-torqueing a fastener?

Answer 9

Insufficient contact area for current flow

Question 10

What common items are scanned with a thermal camera in maintenance procedures?

Answer 10

Electrical panels and service connections

Question 11

What are some hazards associated with aluminum conductors?

Answer 11

Rapid oxidation, high coefficient of expansion, cold-flow