What is the minimum approach distance?
Table of Contents
What is the minimum approach distance?
Minimum approach distance . (MAD) means distance between high voltage lines or equipment and work being performed by non-qualified customers or contractors.
What is needed to determine minimum approach distances from the appropriate tables?
If employees will be working at elevations greater than 900 meters (3,000 feet) above mean sea level, the employer shall determine minimum approach distances by multiplying the distances in this table by the correction factor in Table 2940.2-7 corresponding to the altitude of the work.
What is minimum approach distance OSHA?
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 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 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 to 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 approach distance for service lines?
Your paraphrased scenarios and questions, and our replies, follow. 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 should be the minimum clearing distance in feet between the equipment for 750 to 1000 kV line?
4.6
| Voltage | Minimum clearance distance (feet) |
|---|---|
| 350 to 500 kV | 25 |
| 500 to 750 kV | 35 |
| 750 to 1000 kV | 45 |
| Over 1000 kV | 50 |
What is the minimum distance in feet if the power is 200kv?
TABLE A: Minimum Clearance Distances Based on Voltage
| Voltage (kV) | Minimum clearance distance (feet) |
|---|---|
| Up to 50 kV | 10 ft |
| >50 to 200 kV | 15 ft |
| >200 to 350 kV | 20 ft |
| >350 to 500 kV | 25 ft* |
What is the minimum safe distance from high power lines?
As per the Indian Electricity Act, buildings should maintain a horizontal distance of 1.2 metres from 11kV lines and 4 metres from 66kV lines. This buffer zone has been violated in the above cases.
How close can I live to power lines?
What is a safe distance to live from power lines? Power lines from big metal towers emit the highest voltage creating the strongest magnetic fields. The safe distance from these power lines would be at least 700 feet.
What is minimum safe distance from overhead power line?
Hence, if one were to look at safe values – you need to be atleast 50 metres away from domestic transmission and 100 metres for 230-400KV transmission lines.
What is the minimum air clearance for a 6.6 kv live system?
| OUTDOOR | ||
|---|---|---|
| Voltage in KV | Phase to earth in mm | Phase to phase in mm |
| 6.6 | 139.7 | 177.8 |
| 11 | 177.8 | 228.6 |
| 22 | 279.4 | 330.2 |
What is the minimum separation from HV between 11KV and up to and equal to 33KV?
2.0 Meter
Clearances from Buildings of HT and EHT voltage lines IE Rule 80
| Vertical Distance | |
|---|---|
| High voltage lines up to 33KV | 3.7 Meter |
| High Voltage Up to 11 KV | 1.2 Meter |
| 11KV To 33KV | 2.0 Meter |
| Extra High Voltage | 2.0 Meter + Add 0.3 meter for every additional 33KV |
What is the minimum clearance to be maintained while working near 11KV line?
As per the Indian Electricity Act, buildings should maintain a horizontal distance of 1.2 metres from 11kV lines and 4 metres from 66kV lines.
What is the minimum clearance distance from power lines can be found where?
(b) Make sure no part gets within 20 feet of the power line. (c) Follow Table A, which has minimum clearance distances based on voltage….TABLE A: Minimum Clearance Distances Based on Voltage.
| Voltage (kV) | Minimum clearance distance (feet) |
|---|---|
| Up to 50 kV | 10 ft |
| >50 to 200 kV | 15 ft |
| >200 to 350 kV | 20 ft |
| >350 to 500 kV | 25 ft* |
What is the minimum clearance distance from 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 safe distance from power lines OSHA?
Paragraph 1910.333(c)(3)(iii) applies to the operation of mechanical equipment, such as cranes, near overhead power lines. This provision requires that equipment be operated so that a clearance of 10 feet from any energized overhead line is maintained.
