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Flashcards in Jake's Questions Deck (4)
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1

What are the ground medium priorities?

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*

2

Why do we ground?

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

3

What are the key steps in the grounding process?

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

4

What is the preferred method of overhead grounding?

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.