Electrical Safety, Equipment, and Circuit Principles for Linemen Questions and Answers 2026|2027 Updated

Electrical Safety, Equipment, and Circuit Principles for Linemen Questions and Answers 2026|2027 Updated Can a capacitance charge remain in a cable after disconnection from the circuit? - Answer- Yes What is a rotation meter essentially? - Answer- A simple 3 phase motor Does a pole-mounted insulated platform need to be on an electrical retesting schedule? - Answer- No Does a web hoist have great insulation properties? - Answer- No Can two small, single primary bushing 120/240-volt transformers be paralleled for equivalent capacity? - Answer- No Are fault currents in substations typically greater than at remote worksites? - Answer- Yes Can a single-phase recloser rated at 14.4kV operate on an electrical system up to that voltage without adjustments? - Answer- Yes Are capacitors connected in series with the line? - Answer- Yes What factors affect the tension on a down guy? - Answer- Height of guying attachment and distance to anchor Is it critical to leave grounding straps in place when connecting a wye-delta bank for 120/240-volt service? - Answer- No Must braces be completely removed from an H-frame structure to change out a timber? - Answer- Yes Is a broken conductor lying on frozen ground always a dead-short? - Answer- No What is the best way for a Lineman to identify hazards while climbing a pole? - Answer- Look up Is transformer capacity rated in kW? - Answer- No What must be done to parallel the coils of a transformer? - Answer- Connect the internal leads AC, BD If a neutral is opened on energized equipment, what may be present? - Answer- Voltage equal to the circuit voltage What do the initials CSP on a transformer mean? - Answer- Closed secondary protection If the secondary of a three-phase bank is connected 120V WYE, what is the voltage from phase to phase? - Answer- 208 What are the three elements necessary to perform as a Journeyman Lineman? - Answer- Knowledge, attitude, and skill If a boom makes contact with an energized line, what danger does a nearby worker face? - Answer- Step potential What does a recloser protect in a substation? - Answer- Distribution feeder Should personal protective equipment be altered to fit the employee? - Answer- No What happens if one phase of a three-phase delta system is accidentally grounded? - Answer- Large currents flow to ground If a transformer has a primary coil of 1,000 turns and a secondary coil of 10 turns, what is its ratio? - Answer- 100 to 1 What is the phase to neutral voltage of a 4,160 volt WYE circuit? - Answer- 2,400 volts What precautions should be taken when changing taps on a distribution transformer with an external tap changer? - Answer- Never change taps energized What is the purpose of a potential transformer? - Answer- Steps down voltage & readable voltage with a known multiplier Which is stronger: an eye splice or a bowline? - Answer- An eye splice Which component is not part of a switchyard? - Answer- Fused cutout If a primary fuse blows on a paralleled transformer, what will the other transformer do? - Answer- Operate normally What is the transformer called with the ground at 2X in a two-pot bank? - Answer- High Phase transformer