Lineman Equipment and Tools Knowledge 3 — Questions and Answers
Question 1: What class of rubber insulating gloves is rated for use on systems up to 17,000 volts AC?
- Class 00
- Class 1
- Class 2 (Correct answer)
- Class 3
Correct answer: Class 2
Class 2 rubber insulating gloves are rated for a maximum use voltage of 17,000 volts AC (proof tested to 20,000 volts AC).
Question 2: A digger derrick is best described as:
- A portable hand drill used in pole climbing
- A truck-mounted combination earth auger and crane used for utility pole work (Correct answer)
- A device for measuring pole depth
- A hydraulic tool for pulling conductors through conduit
Correct answer: A truck-mounted combination earth auger and crane used for utility pole work
A digger derrick is a specialized utility truck equipped with a hydraulic earth auger for boring pole holes and a crane for setting utility poles.
Question 3: Which OSHA regulation governs the use of personal protective equipment (PPE) for electric power transmission and distribution work?
- 29 CFR 1910.137
- 29 CFR 1926.960
- 29 CFR 1910.269 (Correct answer)
- 29 CFR 1926.501
Correct answer: 29 CFR 1910.269
29 CFR 1910.269 is the OSHA standard specifically covering electric power generation, transmission, and distribution work, including PPE requirements.
Question 4: What is the purpose of a grounds crew using a 'shotgun stick' during energized line work?
- To fire a rope over a conductor
- To install or remove hot-line clamps and temporary grounds from a distance (Correct answer)
- To measure conductor voltage
- To cut conductor tie wires remotely
Correct answer: To install or remove hot-line clamps and temporary grounds from a distance
A shotgun stick is an insulated live-line tool with a hook mechanism used to install or remove protective grounds and hot-line clamps on energized conductors from a safe distance.
Question 5: When using a chain hoist to lift transformer equipment, the chain hoist's working load limit (WLL) should be:
- Equal to the weight of the load
- At least half the weight of the load
- Greater than the total weight of the load with an appropriate safety factor (Correct answer)
- Twice the estimated weight only when overhead clearance is limited
Correct answer: Greater than the total weight of the load with an appropriate safety factor
The chain hoist's WLL must exceed the actual load weight with the required safety factor applied per manufacturer specifications and ASME standards.
Question 6: What type of tool is a 'wire mesh grip' (also called a Kellems grip) used for?
- Stripping the outer jacket from cables
- Supporting the weight of a conductor during pulling and installation (Correct answer)
- Measuring the tensile strength of a conductor
- Connecting two conductors end-to-end
Correct answer: Supporting the weight of a conductor during pulling and installation
A wire mesh grip (Kellems grip) is a woven wire basket that tightens its grip on a conductor under tension, used to pull or support cable during installation.
Question 7: A lineman's body belt is classified as which type of fall protection system?
- Fall arrest system
- Work positioning system (Correct answer)
- Fall restraint system
- Ladder safety system
Correct answer: Work positioning system
A body belt used with a positioning strap is a work positioning system that supports the lineman's weight while working, not designed to arrest a free fall.
Lineman Equipment and Tools Knowledge 3
What class of rubber insulating gloves is rated for use on systems up to 17,000 volts AC?