Powerline Technician exam: Grounding and protective grounding

Key points

• Treat every line as energized until it is tested and grounded.
• Test for absence of voltage before applying grounds.
• Connect the ground end first, then the line end. Remove in reverse.
• Equipotential grounding keeps everything in the work zone at the same voltage.
• Ground sets must be rated for the available fault current.

Study tip

If asked what comes first, the answer is usually testing for voltage.

Try these

1. When applying protective grounds, connect first to:

   1. The phase conductor
   2. The ground
   3. The neutral last
   4. Any point
   Show answer

   B. The ground Ground end first.

2. Before applying grounds you must:

   1. Remove the meter
   2. Test for absence of voltage
   3. Open the transformer
   4. Cut the line
   Show answer

   B. Test for absence of voltage Test before you touch.

3. Ground sets are sized for:

   1. Line length
   2. Available fault current
   3. Crew size
   4. Pole height
   Show answer

   B. Available fault current They must carry fault current safely.

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