What is the minimum approach distance?
The word is actually an acronym that stands for minimum approach distance, which is the calculated safe working distance that provides worker protection when working on or in the vicinity of energized lines and equipment. As with other articles in this series, we must begin with the hazard.
What is OSHA minimum approach distance?
As specified in Table R-6 of 1910.269 for phase to phase nominal voltages of 46.1 to 72.5 kilovolts, the minimum approach distance when phase to ground exposure is the concern is 3 feet (0.9 m) which is the clearance between the blade side on the bottom and the jaw at the top of the switch.
What is the minimum approach distance for 345 kV?
Over 50 kV to 345 kV 10 ft. Over 345 kV to 750 kV 16 ft. Over 750 kV to 1,000 kV 20 ft.
What is the minimum approach distance for service lines?
Scenario 1: Your utility has established, as a written rule, a minimum approach distance of 4 feet, 0 inches for employee exposure to energized parts on a 25 kV system, regardless of whether that exposure is phase to ground or phase to phase.
What is the overhead powerline approach distance for a 1kv power line?
|Voltage (kV)||Minimum clearance distance (feet)|
|>50 to 345 kV||10 ft|
|>345 to 750 kV||16 ft|
|>750 to 1,000 kV||20 ft|
|> 1,000 kV||*|
What is the minimum approach distance for 7200 volts?
two foot, two inches
The worker is positioned in an aerial lift “bucket” and working within the minimum approach distance (two foot, two inches for AC live line work) of the high side bushing, energized at 7200 volts. The employee cannot reach the high side bushing while the bucket is in this location.
What is an approach distance?
An approach distance is the minimum space from an energised overhead electric line that should be maintained by a person or an object held by or in contact with that person.
What are the minimum distances to be maintained from overhead power lines?
always remain in the vehicle. never approach, attempt to rescue or allow others to approach any machinery or vehicles in contact with power lines. stay a minimum of 8 metres from the vehicle (about a bus length away) treat all powerlines as if they are ‘live’
What is the minimum safe distance from overhead power lines?
A safe working distance depends on the voltage of the power lines. Always maintain a distance of at least 10 feet from overhead lines and more than 10 feet if the voltage to ground is over 50 kilovolts (50,000 volts). The higher the voltage, the greater the distance that is needed between the lines and the workers.
What is the minimum clearance distance from power lines?
§ 1612.1. Power Line Safety (Up to 350 kV) – Equipment Operations.
|TABLE A – MINIMUM CLEARANCE DISTANCES|
|Voltage||Minimum clearance distance|
|(nominal, kV, alternating current)||(feet)|
|up to 50||10|
|over 50 to 175||15|
What is the minimum limit of approach starting at 0 50 kilovolts?
When reducing electrical hazards, remember: All other workers, whether they’re a manager or an operator, are required to keep a distance of 10 feet for energized conductors 50 kilovolts or less. Without insulated tools and PPE, qualified personnel must maintain minimum approach distances.
What is the minimum approach distance for electrical hazards?