OSHA crane power line safety study guide
Section 1926.1408 of OSHA's construction crane and derrick standard (29 CFR 1926 Subpart CC) is headed "Power line safety (up to 350 kV)—equipment operations." Before equipment operations begin, the employer must identify the work zone and determine whether any part of the equipment, load line or load, if operated up to the equipment's maximum working radius in the work zone, could get closer than 20 feet to a power line; if so, the employer must meet one of three options: deenergize and ground, a 20-foot clearance, or a Table A clearance. This guide sets out what the federal rule text states on those options, the encroachment precautions in paragraph (b), voltage information, operations below power lines, presumed-energized lines, transmitter towers, devices and training, with the 1926.1401 definitions it uses. Most duties fall on the employer; some fall on the utility owner/operator and on dedicated spotters, the training covers each operator and crew member assigned to work with the equipment, and many duties carry "unless" or "except" conditions. goraedu does not certify crane operators, and this guide is not a certification exam. Your State may run its own OSHA-approved plan with its own rules, so check them too. Every point links to the regulation and quotes its exact words.
Work zone and the 20-foot determination
Before beginning equipment operations, the employer must identify the work zone, using one of two options.
“Before beginning equipment operations, the employer must: (1) Identify the work zone by either:”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
One option is to demarcate boundaries (such as with flags, or a device such as a range limit device or range control warning device) and prohibit the operator from operating the equipment past those boundaries.
“Demarcating boundaries (such as with flags, or a device such as a range limit device or range control warning device) and prohibiting the operator from operating the equipment past those boundaries”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
The other option is to define the work zone as the area 360 degrees around the equipment, up to the equipment's maximum working radius.
“(ii) Defining the work zone as the area 360 degrees around the equipment, up to the equipment's maximum working radius.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
The employer must determine whether any part of the equipment, load line or load (including rigging and lifting accessories), if operated up to the equipment's maximum working radius in the work zone, could get closer than 20 feet to a power line.
“Determine if any part of the equipment, load line or load (including rigging and lifting accessories), if operated up to the equipment's maximum working radius in the work zone, could get closer than 20 feet to a power line.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
If it could, the employer must meet the requirements of one of the options: Option (1), Option (2) or Option (3).
“If so, the employer must meet the requirements in Option (1), Option (2), or Option (3) of this section, as follows:”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Section 1926.1401 defines power lines as electric transmission and distribution lines.
“Power lines means electric transmission and distribution lines.”
Not covered here
Rules for equipment traveling under or near power lines are not part of the 1926.1408 text and are not covered in this guide. We only write what an official source states, so study these parts with your certifying program's materials.
Options (1), (2) and (3)
Option (1), deenergize and ground: confirm from the utility owner/operator that the power line has been deenergized and visibly grounded at the worksite.
“Option (1)—Deenergize and ground. Confirm from the utility owner/operator that the power line has been deenergized and visibly grounded at the worksite.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Option (2), 20 foot clearance: ensure that no part of the equipment, load line, or load (including rigging and lifting accessories) gets closer than 20 feet to the power line by implementing the measures in paragraph (b).
“Option (2) —20 foot clearance. Ensure that no part of the equipment, load line, or load (including rigging and lifting accessories), gets closer than 20 feet to the power line by implementing the measures specified in paragraph (b) of this section.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Option (3), Table A clearance, starts with determining the line's voltage and the minimum approach distance permitted under Table A.
“Option (3) —Table A clearance. (A) Determine the line's voltage and the minimum approach distance permitted under Table A (see § 1926.1408).”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Under Option (3), the employer then determines whether any part of the equipment, load line or load (including rigging and lifting accessories), while operating up to the equipment's maximum working radius in the work zone, could get closer than the line's permitted minimum approach distance.
“Determine if any part of the equipment, load line or load (including rigging and lifting accessories), while operating up to the equipment's maximum working radius in the work zone, could get closer than the minimum approach distance of the power line permitted”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
If it could, the employer must follow paragraph (b) to ensure that no part of the equipment, load line, or load (including rigging and lifting accessories) gets closer to the line than the minimum approach distance.
“If so, then the employer must follow the requirements in paragraph (b) of this section to ensure that no part of the equipment, load line, or load (including rigging and lifting accessories), gets closer to the line than the minimum approach distance.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Encroachment precautions
Where encroachment precautions are required under Option (2) or Option (3), all of the requirements in paragraph (b) must be met.
“(b) Preventing encroachment/electrocution. Where encroachment precautions are required under Option (2) or Option (3) of this section, all of the following requirements must be met:”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Encroachment is where any part of the crane, load line or load (including rigging and lifting accessories) breaches a minimum clearance distance that the subpart requires to be maintained from a power line.
“Encroachment is where any part of the crane, load line or load (including rigging and lifting accessories) breaches a minimum clearance distance that this subpart requires to be maintained from a power line.”
A planning meeting must be held with the operator and the other workers who will be in the area of the equipment or load, to review the location of the power line(s) and the steps that will be implemented to prevent encroachment/electrocution.
“Conduct a planning meeting with the operator and the other workers who will be in the area of the equipment or load to review the location of the power line(s), and the steps that will be implemented to prevent encroachment/electrocution.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
If tag lines are used, they must be non-conductive.
“If tag lines are used, they must be non-conductive.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
An elevated warning line, barricade, or line of signs must be erected and maintained in view of the operator, equipped with flags or similar high-visibility markings, at 20 feet from the power line (if using Option (2)) or at the Table A minimum approach distance (if using Option (3)).
“Erect and maintain an elevated warning line, barricade, or line of signs, in view of the operator, equipped with flags or similar high-visibility markings, at 20 feet from the power line (if using Option (2) of this section) or at the minimum approach distance under Table A (see § 1926.1408) (if using Option (3) of this section).”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
If the operator is unable to see the elevated warning line, a dedicated spotter must be used as described in (b)(4)(ii), in addition to one of the measures in (b)(4)(i), (iii), (iv) and (v).
“If the operator is unable to see the elevated warning line, a dedicated spotter must be used as described in § 1926.1408(b)(4)(ii) in addition to implementing one of the measures described in §§ 1926.1408(b)(4)(i), (iii), (iv) and (v).”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
At least one of the measures listed in paragraph (b)(4) must also be implemented.
“(4) Implement at least one of the following measures:”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
The requirements of paragraph (b)(4) do not apply to work covered by subpart V of part 1926.
“The requirements of paragraph (b)(4) of this section do not apply to work covered by subpart V of this part.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Encroachment prevention measures
One of the options under (b)(4) is a proximity alarm set to give the operator sufficient warning to prevent encroachment.
“A proximity alarm set to give the operator sufficient warning to prevent encroachment.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Another option is a dedicated spotter who is in continuous contact with the operator; where this measure is selected, the spotter must meet the requirements in (b)(4)(ii)(A) to (D).
“A dedicated spotter who is in continuous contact with the operator. Where this measure is selected, the dedicated spotter must:”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
To be considered a dedicated spotter, the requirements of 1926.1428 (Signal person qualifications) must be met, and the spotter's sole responsibility is to watch the separation between the power line and the equipment, load line and load (including rigging and lifting accessories) and ensure through communication with the operator that the applicable minimum approach distance is not breached.
“Dedicated spotter (power lines): To be considered a dedicated spotter, the requirements of § 1926.1428 (Signal person qualifications) must be met and his/her sole responsibility is to watch the separation between the power line and the equipment, load line and load (including rigging and lifting accessories), and ensure through communication with the operator that the applicable minimum approach distance is not breached.”
The dedicated spotter must be equipped with a visual aid to assist in identifying the minimum clearance distance; examples include, but are not limited to, a clearly visible line painted on the ground, a clearly visible line of stanchions, or a set of clearly visible line-of-sight landmarks.
“Be equipped with a visual aid to assist in identifying the minimum clearance distance. Examples of a visual aid include, but are not limited to: A clearly visible line painted on the ground; a clearly visible line of stanchions; a set of clearly visible line-of-sight landmarks”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
The dedicated spotter must be positioned to effectively gauge the clearance distance, use equipment to communicate directly with the operator where necessary, and give timely information to the operator so that the required clearance distance can be maintained.
“(B) Be positioned to effectively gauge the clearance distance. (C) Where necessary, use equipment that enables the dedicated spotter to communicate directly with the operator. (D) Give timely information to the operator so that the required clearance distance can be maintained.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Another option is a device that automatically warns the operator when to stop movement, such as a range control warning device, set to give the operator sufficient warning to prevent encroachment.
“A device that automatically warns the operator when to stop movement, such as a range control warning device. Such a device must be set to give the operator sufficient warning to prevent encroachment.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Another option is a device that automatically limits range of movement, set to prevent encroachment.
“A device that automatically limits range of movement, set to prevent encroachment.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Another option is an insulating link/device, as defined in 1926.1401, installed at a point between the end of the load line (or below) and the load.
“An insulating link/device, as defined in § 1926.1401, installed at a point between the end of the load line (or below) and the load.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
An insulating link/device means an insulating device listed, labeled, or accepted by a Nationally Recognized Testing Laboratory in accordance with 29 CFR 1910.7.
“Insulating link/device means an insulating device listed, labeled, or accepted by a Nationally Recognized Testing Laboratory in accordance with 29 CFR 1910.7.”
Voltage information and Table A
Where Option (3) is used, the utility owner/operator of the power lines must provide the requested voltage information within two working days of the employer's request.
“Where Option (3) of this section is used, the utility owner/operator of the power lines must provide the requested voltage information within two working days of the employer's request.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Table A sets a minimum clearance distance of 10 feet for nominal voltage up to 50 kV (alternating current).
“up to 50 10”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Table A sets a minimum clearance distance of 15 feet for nominal voltage over 50 to 200 kV (alternating current).
“over 50 to 200 15”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
The note to Table A says the value that follows "to" is included: over 50 to 200 means up to and including 200 kV.
“NOTE: The value that follows “to” is up to and includes that value. For example, over 50 to 200 means up to and including 200kV.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Section 1926.1401 defines "up to" as "up to and including."
“Up to means “up to and including.””
Not covered here
Only the up to 50 kV and over 50 to 200 kV rows of Table A are quoted here. The table also has rows for over 200 to 350, over 350 to 500, over 500 to 750 and over 750 to 1,000 kV, and a row for over 1,000 kV whose distance is established by the utility owner/operator or a registered professional engineer who is a qualified person with respect to electrical power transmission and distribution. We only write what an official source states, so study these parts with your certifying program's materials.
Operations below power lines
No part of the equipment, load line, or load (including rigging and lifting accessories) is allowed below a power line unless the employer has confirmed that the utility owner/operator has deenergized and (at the worksite) visibly grounded the line, except where one of the exceptions in (d)(2) applies.
“No part of the equipment, load line, or load (including rigging and lifting accessories) is allowed below a power line unless the employer has confirmed that the utility owner/operator has deenergized and (at the worksite) visibly grounded the power line, except where one of the exceptions in paragraph (d)(2) of this section applies.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Paragraph (d)(1) does not apply where the employer demonstrates that one of the exceptions applies; one of them is that the work is covered by subpart V of part 1926.
“Paragraph (d)(1) of this section is inapplicable where the employer demonstrates that one of the following applies: (i) The work is covered by subpart V of this part.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
For equipment with non-extensible booms, an exception applies where the uppermost part of the equipment, with the boom at true vertical, would be more than 20 feet below the plane of the power line or more than the Table A minimum clearance distance below that plane.
“For equipment with non-extensible booms: The uppermost part of the equipment, with the boom at true vertical, would be more than 20 feet below the plane of the power line or more than the Table A of this section minimum clearance distance below the plane of the power line.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
For equipment with articulating or extensible booms, the same test is made with the boom in the fully extended position, at true vertical.
“For equipment with articulating or extensible booms: The uppermost part of the equipment, with the boom in the fully extended position, at true vertical, would be more than 20 feet below the plane of the power line or more than the Table A of this section minimum clearance distance below the plane of the power line.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Another exception applies where the employer demonstrates that compliance with (d)(1) is infeasible and meets the requirements of 1926.1410.
“The employer demonstrates that compliance with paragraph (d)(1) of this section is infeasible and meets the requirements of § 1926.1410.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Not covered here
The requirements of 1926.1410, which (d)(2)(iv) cross-references, are not covered here. We only write what an official source states, so study these parts with your certifying program's materials.
Energized lines, transmitter towers and devices
The employer must assume that all power lines are energized unless the utility owner/operator confirms that the line has been and continues to be deenergized and visibly grounded at the worksite.
“The employer must assume that all power lines are energized unless the utility owner/operator confirms that the power line has been and continues to be deenergized and visibly grounded at the worksite.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
When working near transmitter/communication towers where the equipment is close enough for an electrical charge to be induced in the equipment or materials being handled, the transmitter must be deenergized or the precautions in (f)(1) and (f)(2) must be taken.
“When working near transmitter/communication towers where the equipment is close enough for an electrical charge to be induced in the equipment or materials being handled, the transmitter must be deenergized or the following precautions must be taken:”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Those precautions are that the equipment must be provided with an electrical ground and, if tag lines are used, they must be non-conductive.
“(1) The equipment must be provided with an electrical ground. (2) If tag lines are used, they must be non-conductive.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Devices originally designed by the manufacturer for use as a safety device, operational aid, or a means to prevent power line contact or electrocution must meet the manufacturer's procedures for use and conditions of use when used to comply with 1926.1408.
“Devices originally designed by the manufacturer for use as: A safety device (see § 1926.1415), operational aid, or a means to prevent power line contact or electrocution, when used to comply with this section, must meet the manufacturer's procedures for use and conditions of use.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Training
The employer must train each operator and crew member assigned to work with the equipment on all of the topics listed in (g)(1).
“The employer must train each operator and crew member assigned to work with the equipment on all of the following:”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Training must cover the procedures to be followed in the event of electrical contact with a power line, including the danger of electrocution from the operator simultaneously touching the equipment and the ground.
“The procedures to be followed in the event of electrical contact with a power line. Such training must include: (A) Information regarding the danger of electrocution from the operator simultaneously touching the equipment and the ground.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Electrical contact occurs when a person, object, or equipment makes contact or comes in close proximity with an energized conductor or equipment that allows the passage of current.
“Electrical contact occurs when a person, object, or equipment makes contact or comes in close proximity with an energized conductor or equipment that allows the passage of current.”
Training must include the importance to the operator's safety of remaining inside the cab, except where there is an imminent danger of fire, explosion, or other emergency that necessitates leaving the cab.
“The importance to the operator's safety of remaining inside the cab except where there is an imminent danger of fire, explosion, or other emergency that necessitates leaving the cab.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Training must include the safest means of evacuating from equipment that may be energized.
“(C) The safest means of evacuating from equipment that may be energized.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Training must include the danger of the potentially energized zone around the equipment (step potential).
“(D) The danger of the potentially energized zone around the equipment (step potential).”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Training must include the need for crew in the area to avoid approaching or touching the equipment and the load, and safe clearance distance from power lines.
“(E) The need for crew in the area to avoid approaching or touching the equipment and the load. (F) Safe clearance distance from power lines.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Training must cover that power lines are presumed to be uninsulated unless the utility owner/operator or a registered engineer who is a qualified person with respect to electrical power transmission and distribution confirms that a line is insulated.
“Power lines are presumed to be uninsulated unless the utility owner/operator or a registered engineer who is a qualified person with respect to electrical power transmission and distribution confirms that a line is insulated.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
A qualified person is one who, by possession of a recognized degree, certificate, or professional standing, or by extensive knowledge, training and experience, successfully demonstrated the ability to solve/resolve problems relating to the subject matter, the work, or the project.
“Qualified person means a person who, by possession of a recognized degree, certificate, or professional standing, or who by extensive knowledge, training and experience, successfully demonstrated the ability to solve/resolve problems relating to the subject matter, the work, or the project.”
Training must cover the limitations of an insulating link/device, proximity alarm, and range control (and similar) device, if used, and the procedures to properly ground equipment and the limitations of grounding.
“The limitations of an insulating link/device, proximity alarm, and range control (and similar) device, if used. (v) The procedures to be followed to properly ground equipment and the limitations of grounding.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Employees working as dedicated spotters must be trained to enable them to effectively perform their task, including training on the applicable requirements of 1926.1408.
“Employees working as dedicated spotters must be trained to enable them to effectively perform their task, including training on the applicable requirements of this section.”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Training under 1926.1408 must be administered in accordance with 1926.1430(g).
“Training under this section must be administered in accordance with § 1926.1430(g).”
29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations
Not covered here
How training must be administered under 1926.1430(g) is not covered here. We only write what an official source states, so study these parts with your certifying program's materials.
Sources
- eCFR: 29 CFR 1926.1408, Power line safety (up to 350 kV)—equipment operations (as of Nov 4, 2026)Checked November 6, 2026
- eCFR: 29 CFR 1926.1401, Definitions (as of Nov 4, 2026)Checked November 6, 2026
Other OSHA crane operator study guides: Inspections, Operation and work area control, Signals, Signal person qualifications, Operator training, certification and evaluation, Hoisting personnel