For AMT-2 qualified employees against Catenary, Signal Line, and Utility Wires less than 35000 volts, energized or de-energized and not grounded, what is the minimum approach distance?

For AMT-2 qualified employees against Catenary, Signal Line, and Utility Wires less than 35000 volts, energized or de-energized and not grounded, what is the minimum approach distance?

• A. 8 ft.
• B. 3 ft.
• C. 6 inches.
• D. 15 ft.

Answer: (B)

The key idea is that the minimum approach distance is the smallest safe gap you must maintain from exposed energized parts to prevent shock or arcing, and it depends on the voltage involved. For AMT-2 qualified workers around catenary, signal lines, and utility wires rated under 35,000 volts, keeping at least three feet of clearance when the parts are energized or when they are de-energized but not grounded provides a practical, safe margin against an air arc reaching the worker. This voltage range has a relatively short air-arc distance, so three feet is enough to help prevent electrical injury while still allowing work to proceed efficiently. Distances like eight feet or fifteen feet are unnecessarily large for this voltage level, and a much smaller distance such as six inches wouldn’t give adequate protection against arcing or incidental contact. The hazard remains as long as there is potential for current flow (energized or de-energized but not grounded), so the same three-foot rule applies.

The key idea is that the minimum approach distance is the smallest safe gap you must maintain from exposed energized parts to prevent shock or arcing, and it depends on the voltage involved. For AMT-2 qualified workers around catenary, signal lines, and utility wires rated under 35,000 volts, keeping at least three feet of clearance when the parts are energized or when they are de-energized but not grounded provides a practical, safe margin against an air arc reaching the worker. This voltage range has a relatively short air-arc distance, so three feet is enough to help prevent electrical injury while still allowing work to proceed efficiently. Distances like eight feet or fifteen feet are unnecessarily large for this voltage level, and a much smaller distance such as six inches wouldn’t give adequate protection against arcing or incidental contact. The hazard remains as long as there is potential for current flow (energized or de-energized but not grounded), so the same three-foot rule applies.