Lineman Exam Graded A+

Lineman Exam Graded A+ Why are grounds interconnected? - Answer- To limit the voltage that goes through the transformer making it safer for yourself and others. Define high and low voltage. - Answer- Low voltage- up to 1000 V High voltage- between 35kV and 230kV What are the height of poles for various constructions? - Answer- 40 and 45 ft What part of the pole should be protected from punctures? - Answer- The butt of the pole (12" above the ground and 24" below the ground Explain the reason we use guys and guy guards? - Answer- To support the pole How do we determine pole depths? What happens wen the grade changes? - Answer- 10% of the poles height plus 2 feet. Determines if the pole needs to be set further or set higher. What are we testing for when we test meters? - Answer- We test for voltage, back feed, faults, and short phase conductors How are meter test performed? - Answer- Nuetral to line side (120V) Bottom load to neutral What meter seals are used for? - Answer- To indicate what the meter is being used for. What are the meter colors and there meaning? - Answer- White: medical house (someone who needs there electricity that has a medical use) Red: The house has been tampered with or the person did not pay for their electricity Yellow: the meter is out of service Gray: in service or is almost in service How do you care for your climbing hooks? - Answer- Wear your hook guards Never walk on pavement Only wear on the pole Inspect before each use Sharpen your hooks when need to be What is a pulley line? Describe - Answer- The pulley line is used to bring up anything that is needed during your job. Can also be used as your life line (hurt-man rescue) What are the safety measures involved before you start a climb? - Answer- Check the butt of the pole Check for splits (highways) Holes Nails Gaffs Buck squeeze Belt What are the various tie wire lengths for the 4 different wire sizes? - Answer- 64" , 66" , 70" , 72" What is a spec and where would it be located? - Answer- How to build your job by your companies liking along with the measurements. Book can be found in the truck or in a safe place throughout the truck What is the difference between a a ground and neutral? - Answer- A ground is used for your protection to direct the voltage somewhere else A neutral is to return to an unbalance current used for the current to go back to the original source What is magnetism? Where would you find it? How does it work? - Answer- On the inside of a transformer. It is a physical phenomenon by moving an electrical charge by doing that it creates a magnitude field How do you determine kVa? - Answer- Volts (times) amperage = KVA How do you install a meter? What is the PPE required? - Answer- Standing off from the side put the bottom in first and then put the top in after Low volt gloves, safety glasses, and your hard hat, FR clothing What are "taps" on a transformer? - Answer- Raise or lower the voltage to 2.5% per each tap, can be located on the name plate to tell how many taps. How is deconstruction/ removing conductors safely. - Answer- Wear your proper PPE, do not touch What are the various wire sizes? - Answer- 2, 4, 6, and 336.4 and 3397.5 What is the phasing direction in the area? - Answer- Typical system phasing is west to east Cross arm construction is north to south How do we use test equipment? List the test equipment? What am i testing for? - Answer- Wiggins- testing for back feed ( continuity)