Elevators and Escalators

DOE-HDBK-1092-98

1. Lines 50 kV or below: 10 ft between the lines and any part of the equipment or load

2. Lines over 50 kV: 10 ft plus 0.4 in. for every 1 kV above 50 kV.

In locations and situations where it is possible that the operator may have difficulty observing that

these clearances are being maintained, someone shall be designated to monitor the clearances and

provide the operator with timely warning before contact can be made. The use of cage-type boom

guards, insulating links, or a proximity sensor shall not alter the electrical safety requirements of 29

CFR 1910.269(p)(4) and 1926.550, even if these devices are required. (See Figure 6-2.)

OSHA Sections 29 CFR 1910.269(p)(4), 1926.952 (b)

NFPA 70E Part ll, CH 1, B (2) (i) (1); (2)

Figure 6-2. A minimum clearance of 10 ft between overhead power lines and equipment is required for 50

kV and below while a clearance of 10 ft plus 4 in. for every kV above 50 kV is required.

6.3 ELEVATORS AND ESCALATORS

Elevators and escalators are used to move people and elevators are also used to move materials.

Design, installation, inspection, and maintenance activities require specialized knowledge for safe

operation and use.

6.3.1 CODES AND STANDARDS

A comprehensive electrical safety program for elevators and escalators can be achieved through the

application of the guidelines in the following five standards:

1. ANSI/ASME A17.1, Safety Code for Elevators and Escalators

2. ANSI/ASME A17.2.1, "Inspectors Manual for Electric Elevators." ANSI/ASME A17.2.2,

"Inspectors Manual for Hydraulic Elevators." ANSI/ASME A17.2.3, "Inspectors Manual for

Escalators and Moving Walks."

3. ANSI/ASME A17.3, Safety Code for Existing Elevators and Escalators.

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