What are some electrical hazards employee should look for while working on aircraft modifications?
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Rosie's answer
Published by SALUSEmployees should identify and mitigate electrical contact hazards by maintaining a safe distance from energized parts. The minimum approach distance (MAD) should be observed, and it varies based on voltage range:
- 0 to 50KV: 10 feet (3 meters)
- Over 50KV to 200KV: 15 feet (5 meters)
- Over 200 KV to 350KV: 20 feet (6 meters)
- Over 350 KV to 500KV: 25 feet (8 meters)
- Over 500 KV to 750KV: 35 feet (11 meters)
- Over 750KV to 1000 KV: 45 feet (14 meters)
Ensure to allow for machine movement and electrical line swaying when maintaining these distances. Also, remember that these requirements shall apply except where employer, local or governmental regulations are more stringent. [2] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20]
Additionally, employees must handle conductive materials and equipment in a manner that prevents contact with exposed energized conductors or circuit parts. If handling long, dimensional conductive objects, work practices such as insulation, guarding, and material handling techniques should be implemented to minimize the hazard. [1]
Other key points include:
- Using portable ladders with nonconductive siderails if there is a chance of contact with exposed energized parts.
- Removing conductive articles of jewelry and clothing, or ensuring they are insulated.
- Providing adequate safeguards such as insulating equipment or barriers during housekeeping duties near live parts.
- Ensuring that electrical safety interlocks are only defeated temporarily by qualified personnel and are returned to operable condition after work is completed. [1]
Sources used for this answer
[1] JLG - Boom Lifts : 600S HC3, 660SJ HC3 - Operation (PN 31215907)
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# SECTION 1 - SAFETY PRECAUTIONS - Maintain distance from electrical lines, apparatus, or any ener- gized (exposed or insulated) parts according to the Minimum Approach Distance (MAD) as shown in Table 1-1. - Allow for machine movement and electrical line swaying. Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>Oto 50KV</td><td>10(3)</td></tr><tr><td>Over 50KV to 200 KV</td><td>15(5)</td></tr><tr><td>Over 200 KV to 350KV</td><td>20(6)</td></tr><tr><td>Over 350 KV to 500KV</td><td>25(8)</td></tr><tr><td>Over 500 KV to 750KV</td><td>35(11)</td></tr><tr><td>Over 750KV to 1000 KV</td><td>45(14)</td></tr><tr><td colspan="2">NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent.</td></tr></table> Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equip- ment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. 1-6 31215907
[2] JLG - Boom Lifts : 1200SJP, 1350SJP - Operation (PN 31215054)
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Open source documentSource excerpt
# SECTION 1 - SAFETY PRECAUTIONS - Maintain distance from electrical lines, apparatus, or any ener- gized (exposed or insulated) parts according to the Minimum Approach Distance (MAD) as shown in Table 1-1. - Allow for machine movement and electrical line swaying. Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>0to50KV</td><td>10(3)</td></tr><tr><td>Over 50KV to 200 KV</td><td>15(5)</td></tr><tr><td>Over 200 KV to 350KV</td><td>20(6)</td></tr><tr><td>Over 350KV to 500KV</td><td>25(8)</td></tr><tr><td>Over 5001 KV to 750KV</td><td>35(11)</td></tr><tr><td>Over 750KV to 1000KV</td><td>45(14)</td></tr><tr><td colspan="2">NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent.</td></tr></table> Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equip- ment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. 1-6 31215054
[3] JLG - Boom Lifts : 800S, 860SJ - Operation (PN 31215048)
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Open source documentSource excerpt
# SECTION 1 - SAFETY PRECAUTIONS - Maintain distance from electrical lines, apparatus, or any ener- gized (exposed or insulated) parts according to the Minimum Approach Distance (MAD) as shown in Table 1-1. - Allow for machine movement and electrical line swaying. Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>Oto 50KV</td><td>10(3)</td></tr><tr><td>Over 50KV to 200 KV</td><td>15(5)</td></tr><tr><td>Over 200 KV to 350KV</td><td>20(6)</td></tr><tr><td>Over 350 KV to 500KV</td><td>25(8)</td></tr><tr><td>Over 500 KVto 750KV</td><td>35(11)</td></tr><tr><td>Over 750KV to 1000 KV</td><td>45(14)</td></tr><tr><td colspan="2">NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent.</td></tr></table> Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equip- ment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. 1-6 31215048
[4] JLG - Boom Lifts : H800AJ - Operation (PN 31215042)
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Open source documentSource excerpt
# SECTION 1 - SAFETY PRECAUTIONS - Maintain distance from electrical lines, apparatus, or any ener- gized (exposed or insulated) parts according to the Minimum Approach Distance (MAD) as shown in Table 1-1. - Allow for machine movement and electrical line swaying. Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>Oto 50KV</td><td>10(3)</td></tr><tr><td>Over 50KV to 200KV</td><td>15(5)</td></tr><tr><td>Over 200 KV to 350KV</td><td>20(6)</td></tr><tr><td>Over 350KV to 500KV</td><td>25(8)</td></tr><tr><td>Over 500 KV to 750KV</td><td>35(11)</td></tr><tr><td>Over 750KV to 1000 KV</td><td>45(14)</td></tr><tr><td colspan="2">NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent.</td></tr></table> Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equip- ment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. 1-6 31215042
[5] JLG - Boom Lifts : 1250AJP - Operation (PN 31215057)
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Open source documentSource excerpt
# SECTION 1 - SAFETY PRECAUTIONS - Maintain distance from electrical lines, apparatus, or any ener- gized (exposed or insulated) parts according to the Minimum Approach Distance (MAD) as shown in Table 1-1. - Allow for machine movement and electrical line swaying. Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>Oto 50KV</td><td>10(3)</td></tr><tr><td>Over 50KV to 200 KV</td><td>15(5)</td></tr><tr><td>Over 200 KV to 350KV</td><td>20(6)</td></tr><tr><td>Over 350 KV to 500KV</td><td>25(8)</td></tr><tr><td>Over 500 KV to 750KV</td><td>35(11)</td></tr><tr><td>Over 750KV to 1000 KV</td><td>45(14)</td></tr><tr><td colspan="2">NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent.</td></tr></table> Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equip- ment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. 1-6 31215057
[6] JLG - Boom Lifts : 340AJ - Operation (PN 3121258)
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Open source documentSource excerpt
# SECTION 1 - SAFETY PRECAUTIONS - Maintain distance from electrical lines, apparatus, or any ener- gized (exposed or insulated) parts according to the Minimum Approach Distance (MAD) as shown in Table 1-1. - Allow for machine movement and electrical line swaying. Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>Oto 50KV</td><td>10(3)</td></tr><tr><td>Over 50KV to 200 KV</td><td>15(5)</td></tr><tr><td>Over 200 KV to 350KV</td><td>20(6)</td></tr><tr><td>Over 350 KV to 500KV</td><td>25(8)</td></tr><tr><td>Over 500 KV to 750KV</td><td>35(11)</td></tr><tr><td>Over 750KV to 1000 KV</td><td>45(14)</td></tr><tr><td colspan="2">NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent.</td></tr></table> Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equip- ment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. 1-6 3121258
[7] General Industry Safety and Health Standards (MIOSHA)
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# TABLE S-5 (cont.) ## 1910.333(c)(4) "Illumination." (cont.) 1910.333(c)(5) "Confined or enclosed work spaces." When an employee works in a confined or enclosed space (such as a manhole or vault) that contains exposed energized parts, the employer shall provide, and the employee shall use, protective shields, protective barriers, or insulating materials as necessary to avoid inadvertent contact with these parts. Doors, hinged panels, and the like shall be secured to prevent their swinging into an employee and causing the employee to contact exposed energized parts. 1910.333(c)(6) "Conductive materials and equipment." Conductive materials and equipment that are in contact with any part of an employee's body shall be handled in a manner that will prevent them from contacting exposed energized conductors or circuit parts. If an employee must handle long dimensional conductive objects (such as ducts and pipes) in areas with exposed live parts, the employer shall institute work practices (such as the use of insulation, guarding, and material handling techniques) which will minimize the hazard. ## 1910.333(c)(7) "Portable ladders." Portable ladders shall have nonconductive siderails if they are used where the employee or the ladder could contact exposed energized parts. 1910.333(c)(8) "Conductive apparel." Conductive articles of jewelry and clothing (such a watch bands, bracelets, rings, key chains, necklaces, metalized aprons, cloth with conductive thread, or metal headgear) may not be worn if they might contact exposed energized parts. However, such articles may be worn if they are rendered nonconductive by covering, wrapping, or other insulating means. 1910.333(c)(9) "Housekeeping duties." Where live parts present an electrical contact hazard, employees may not perform housekeeping duties at such close distances to the parts that there is a possibility of contact, unless adequate safeguards (such as insulating equipment or barriers) are provided. Electrically c…
[8] JLG - Boom Lifts : 600S, 660SJ - Operation (PN 31215033)
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# SECTION 1 - SAFETY PRECAUTIONS - Maintain distance from electrical lines, apparatus, or any ener- gized (exposed or insulated) parts according to the Minimum Approach Distance (MAD) as shown in Table 1-1. - Allow for machine movement and electrical line swaying. Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>0to 50KV</td><td>10(3)</td></tr><tr><td>Over 50KV to 200KV</td><td>15(5)</td></tr><tr><td>Over 200KV to 350KV</td><td>20(6)</td></tr></table> Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>Over 350 KV: to 500KV</td><td>25(8)</td></tr><tr><td>Over 500 KV to 750KV</td><td>35(11)</td></tr><tr><td>Over 750KV to 1000 KV</td><td>45(14)</td></tr><tr><td colspan="2">NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent.</td></tr></table> Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equip- ment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. 1-6 31215033
[9] JLG - Boom Lifts : 1850SJ - Operation (PN 31219039)
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# SECTION 1 - SAFETY PRECAUTIONS - Maintain distance from electrical lines, apparatus, or any ener- gized (exposed or insulated) parts according to the Minimum Approach Distance (MAD) as shown in Table 1-1. - Allow for machine movement and electrical line swaying. Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>Oto 50KV</td><td>10(3)</td></tr><tr><td>Over 50KV to 200 KV</td><td>15(5)</td></tr><tr><td>Over 200 KV to 350KV</td><td>20(6)</td></tr><tr><td>Over 350 KV to 500KV</td><td>25(8)</td></tr><tr><td>Over 500 KVto 750KV</td><td>35(11)</td></tr><tr><td>Over 750KV to 1000 KV</td><td>45(14)</td></tr><tr><td colspan="2">NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent.</td></tr></table> Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equip- ment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. 1-6 31219039
[10] JLG - Boom Lifts : 520AJ - Operation (PN 31217154)
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# SECTION 1 - SAFETY PRECAUTIONS - Maintain distance from electrical lines, apparatus, or any ener- gized (exposed or insulated) parts according to the Minimum Approach Distance (MAD) as shown in Table 1-1. - Allow for machine movement and electrical line swaying. Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>Oto 50KV</td><td>10(3)</td></tr><tr><td>Over 50KV to 200 KV</td><td>15(5)</td></tr><tr><td>Over 200 KV to 350KV</td><td>20(6)</td></tr><tr><td>Over 350 KV to 500KV</td><td>25(8)</td></tr><tr><td>Over 500 KV to 750KV</td><td>35(11)</td></tr><tr><td>Over 750KV to 1000 KV</td><td>45(14)</td></tr><tr><td colspan="2">NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent.</td></tr></table> Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equip- ment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. 1-6 31217154
[11] JLG - Boom Lifts : 1100SJ - Operation (PN 31215051)
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# SECTION 1 - SAFETY PRECAUTIONS - Maintain distance from electrical lines, apparatus, or any ener- gized (exposed or insulated) parts according to the Minimum Approach Distance (MAD) as shown in Table 1-1. - Allow for machine movement and electrical line swaying. Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>Oto 50KV</td><td>10(3)</td></tr><tr><td>Over 50KV to 200 KV</td><td>15(5)</td></tr><tr><td>Over 200 KV to 350KV</td><td>20(6)</td></tr><tr><td>Over 350 KV to 500KV</td><td>25(8)</td></tr><tr><td>Over 500 KVto 750KV</td><td>35(11)</td></tr><tr><td>Over 750KV to 1000 KV</td><td>45(14)</td></tr><tr><td colspan="2">NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent.</td></tr></table> Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equip- ment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. 1-6 31215051
[12] JLG - Boom Lifts : 450A, 450AJ - Operation (PN 31217148)
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# SECTION 1 - SAFETY PRECAUTIONS - Maintain distance from electrical lines, apparatus, or any ener- gized (exposed or insulated) parts according to the Minimum Approach Distance (MAD) as shown in Table 1-1. - Allow for machine movement and electrical line swaying. Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>Oto 50KV</td><td>10(3)</td></tr><tr><td>Over 50KV to 200 KV</td><td>15(5)</td></tr><tr><td>Over 200 KV to 350KV</td><td>20(6)</td></tr><tr><td>Over 350 KV to 500KV</td><td>25(8)</td></tr><tr><td>Over 500 KVto 750KV</td><td>35(11)</td></tr><tr><td>Over 750KV to 1000 KV</td><td>45(14)</td></tr><tr><td colspan="2">NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent.</td></tr></table> Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equip- ment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. 1-6 31217148
[13] JLG - Boom Lifts : 450A, 450AJ - Operation (PN 31215021)
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Open source documentSource excerpt
# SECTION 1 - SAFETY PRECAUTIONS - Maintain distance from electrical lines, apparatus, or any ener- gized (exposed or insulated) parts according to the Minimum Approach Distance (MAD) as shown in Table 1-1. - Allow for machine movement and electrical line swaying. Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>Oto 50KV</td><td>10(3)</td></tr><tr><td>Over 50KV to 200 KV</td><td>15(5)</td></tr><tr><td>Over 200 KV to 350KV</td><td>20(6)</td></tr><tr><td>Over 350 KV to 500KV</td><td>25(8)</td></tr><tr><td>Over 500 KVto 750KV</td><td>35(11)</td></tr><tr><td>Over 750KV to 1000 KV</td><td>45(14)</td></tr><tr><td colspan="2">NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent.</td></tr></table> Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equip- ment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. 1-6 31215021
[14] JLG - Boom Lifts : 1200SJP, 1350SJP - Operation (PN 3121141)
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# SECTION 1 - SAFETY PRECAUTIONS - Maintain distance from electrical lines, apparatus, or any ener- gized (exposed or insulated) parts according to the Minimum Approach Distance (MAD) as shown in Table 1-1. - Allow for machine movement and electrical line swaying. Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>0to50KV</td><td>10(3)</td></tr><tr><td>Over 50KV to 200 KV</td><td>15(5)</td></tr><tr><td>Over 200 KV to 350KV</td><td>20(6)</td></tr><tr><td>Over 350KV to 500KV</td><td>25(8)</td></tr><tr><td>Over 500KV to 750KV</td><td>35(11)</td></tr><tr><td>Over 750KV to 1000KV</td><td>45(14)</td></tr><tr><td colspan="2">NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent.</td></tr></table> Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equip- ment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. 1-6 3121141
[15] JLG - Boom Lifts : 340AJ - Operation (PN 31215953)
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# SECTION 1 - SAFETY PRECAUTIONS - Maintain distance from electrical lines, apparatus, or any ener- gized (exposed or insulated) parts according to the Minimum Approach Distance (MAD) as shown in Table 1-1. - Allow for machine movement and electrical line swaying. Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>Oto 50KV</td><td>10(3)</td></tr><tr><td>Over 50KV to 200 KV</td><td>15(5)</td></tr><tr><td>Over 200 KV to 350KV</td><td>20(6)</td></tr><tr><td>Over 350 KV to 500KV</td><td>25(8)</td></tr><tr><td>Over 500 KV to 750KV</td><td>35(11)</td></tr><tr><td>Over 750KV to 1000 KV</td><td>45(14)</td></tr><tr><td colspan="2">NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent.</td></tr></table> Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equip- ment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. 1-6 31215953
[16] JLG - Boom Lifts : 600S, 660SJ - Operation (PN 31217169)
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# SECTION 1 - SAFETY PRECAUTIONS - Maintain distance from electrical lines, apparatus, or any ener- gized (exposed or insulated) parts according to the Minimum Approach Distance (MAD) as shown in Table 1-1. - Allow for machine movement and electrical line swaying. Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>0to 50KV</td><td>10(3)</td></tr><tr><td>Over 50KV to 200KV</td><td>15(5)</td></tr><tr><td>Over 200 KV to 350KV</td><td>20(6)</td></tr></table> Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>Over 350 KV to 500KV</td><td>25(8)</td></tr><tr><td>Over 500 KV to 750KV</td><td>35(11)</td></tr><tr><td>Over 750KV to 1000 KV</td><td>45(14)</td></tr><tr><td colspan="2">NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent.</td></tr></table> Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equip- ment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. 1-6 31217169
[17] JLG - Boom Lifts : 520AJ HC3 - Operation (PN 31217157)
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# SECTION 1 - SAFETY PRECAUTIONS - Maintain distance from electrical lines, apparatus, or any ener- gized (exposed or insulated) parts according to the Minimum Approach Distance (MAD) as shown in Table 1-1. - Allow for machine movement and electrical line swaying. Table 1-1. Minimum Approach Distances (MAD) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>Oto 50KV</td><td>10(3)</td></tr><tr><td>Over 50KV to 200 KV</td><td>15(5)</td></tr><tr><td>Over 200 KV to 350KV</td><td>20(6)</td></tr><tr><td>Over 350 KV to 500KV</td><td>25(8)</td></tr><tr><td>Over 500 KV to 750KV</td><td>35(11)</td></tr><tr><td>Over750KV to 1000 KV</td><td>45(14)</td></tr><tr><td colspan="2">NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent.</td></tr></table> Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equip- ment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. 1-6 31217157
[18] JLG - Boom Lifts : H800AJ - Operation (PN 31219015)
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# SECTION 1 - SAFETY PRECAUTIONS - Maintain distance from electrical lines, apparatus, or any ener- gized (exposed or insulated) parts according to the Minimum Approach Distance (MAD) as shown in Table 1-1. - Allow for machine movement and electrical line swaying. Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>Oto 50KV</td><td>10(3)</td></tr><tr><td>Over 50KV to 200KV</td><td>15(5)</td></tr><tr><td>Over 200 KV to 350KV</td><td>20(6)</td></tr><tr><td>Over 350KV to 500KV</td><td>25(8)</td></tr><tr><td>Over 500 KV to 750KV</td><td>35(11)</td></tr><tr><td>Over 750KV to 1000 KV</td><td>45 (14)</td></tr><tr><td colspan="2">NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent.</td></tr></table> Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equip- ment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. 1-6 31219015
[19] JLG - Boom Lifts : H340AJ - Operation (PN 31215006)
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# SECTION 1 - SAFETY PRECAUTIONS - Maintain distance from electrical lines, apparatus, or any ener- gized (exposed or insulated) parts according to the Minimum Approach Distance (MAD) as shown in Table 1-1. - Allow for machine movement and electrical line swaying. Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>Oto 50KV</td><td>10(3)</td></tr><tr><td>Over 50KV to 200 KV</td><td>15(5)</td></tr><tr><td>Over 200 KV to 350KV</td><td>20(6)</td></tr><tr><td>Over 350 KV to 500KV</td><td>25(8)</td></tr><tr><td>Over 500 KV to 750KV</td><td>35(11)</td></tr><tr><td>Over 750KV to 1000 KV</td><td>45(14)</td></tr><tr><td colspan="2">NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent.</td></tr></table> Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equip- ment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. 1-6 31215006
[20] JLG - Boom Lifts : T350, T500J - Operation (PN 31219042)
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Open source documentSource excerpt
# SECTION 1. +SAFETY (cont.) ## Electrocution Hazards (cont.) SECTION 1 - +SAFETY Table 1-1. Minimum Approach Distances (M.A.D.) <table><tr><th>Voltage Range (Phase to Phase)</th><th>MINIMUM APPROACH DISTANCE in Feet (Meters)</th></tr><tr><td>0to 50KV</td><td>10(3)</td></tr><tr><td>Over 50KV to 200KV</td><td>15(5)</td></tr><tr><td>Over 200 KV to 350KV</td><td>20(6)</td></tr><tr><td>Over 350KV to 500KV</td><td>25(8)</td></tr><tr><td>Over 500 KV to 750KV</td><td>35(11)</td></tr><tr><td>Over 750KV to 1000 KV</td><td>45(14)</td></tr><tr><td colspan="2">NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent.</td></tr></table> Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equipment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. The minimum approach distance may be reduced if insulating barriers are installed to prevent contact, and the barriers are rated for the voltage of the line being guarded. These barriers shall not be part of (or attached to) the machine. The minimum approach distance shall be reduced to a distance within the designed work- ing dimensions of the insulating barrier. This determination shall be made by a qualified person with respect to electrical transmis- sion and distribution in accordance with the employer, local, or governmental requirements for work practices near energized equipment. ## DANGER DO NOT MANEUVER MACHINE OR PERSONNEL INSIDE PROHIBITED ZONE (MAD). ASSUME ALL ELECTRICAL PARTS AND WIRING ARE ENERGIZED UNLESS KNOWN OTH- ERWISE. 1-6 31219042
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