Jake's Questions

Question 1

What are the ground medium priorities?

Answer 1

1. Station Ground
2. 4-wire primary neutral
3. Steel structures
4. Anchor rods

• if none of the foregoing are available, an approved temporary ground rod shall be used. 1 ground rod @ 6’ or two ground rods at 30” connected with a jumper*

Question 2

Why do we ground?

Answer 2

Protect Workers from Hazards — Grounding is required for the protection of the worker when working on de-energized high-voltage lines or equipment. Use of personal grounds will minimize exposure associated with making contact with objects having hazardous difference of electrical potentials

Question 3

What are the key steps in the grounding process?

Answer 3

• Conduct a thorough tailboard
• Determine grounding requirements
• Inspect grounds before use
• Clean ground connections
• Test conductors de-energized
• Apply proper grounds
• Remove grounds

Question 4

What is the preferred method of overhead grounding?

Answer 4

Parallel and Balanced are the Preferred Grounding Schemes — With these preferred grounding schemes one or a maximum of two length(s) of grounds connect any two conductors that a worker might be in contact with. If the line is inadvertently energized, the generated exposure voltage to the worker could be less when a parallel or balanced grounding scheme is used compared to the unbalanced grounding scheme. Therefore, avoid use of the unbalanced grounding scheme for better protection whenever possible.