34 Pa. Code § 39.198 - Working space about electrical equipment
(a) Suitable working space shall be provided
and maintained about electrical utilization equipment.
(b) The working spaces should, if
practicable, have minimum horizontal dimensions, when adjacent to exposed live
parts within 8 feet of floor, as follows:
(1)
Parts above 150 volts to ground, if on one side, 2 feet 6 inches; if on two
sides, 4 feet.
(2) Parts below 150
volts to ground, if on one side, 1 foot, 6 inches; if on two sides, 2 feet, 6
inches.
(c) If adjacent
to such exposed live parts, working spaces should be so arranged that they
shall not be used as passageways.
(d) The elevation of the equipment at least 8
feet above ordinarily accessible working platforms affords protection at least
equivalent to that provided by the horizontal clearances of subsection (b), and
may be used in lieu of such clearances, if desired.
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