Current through Register Vol. 54, No. 45, November 9, 2024
Section 39.201 - Storage batteries, transformers, and lightning arresters(a) The installation of nonportable storage batteries above 50 kilowatt-hour capacity, at the 8 hour rate of discharge, shall be in accordance with the requirements given in §§ 39.121-39.127. If small storage batteries, not included under §§ 39.121-39.127, are placed in rooms used also for other purposes, adequate guards or enclosures shall be provided, when necessary, to prevent the approach of unauthorized persons, and special means of ventilation when necessary to prevent the accumulation of inflammable gas. For batteries whose operating voltage exceeds 150, construction shall comply with §§ 39.125 and 39.199(b) (relating to guarding live parts in battery room; and guarding or isolating live parts).(b) The installation of transformers having either winding over 300 volts to ground shall comply with the provisions of §§ 39.131-39.134 and if the operating voltage of any winding exceeds 750, the transformers shall be made inaccessible to unauthorized persons. Reference should also be made to § 39.197(c) (relating to grounding).(c) The installation of lightning arresters shall comply with §§ 39.181-39.186 and if the operating voltage of the circuit exceeds 750 volts, the arresters shall be made inaccessible to unauthorized persons. This section cited in 34 Pa. Code § 39.134 (relating to transformers); 34 Pa. Code § 39.191 (relating to applicability); 34 Pa. Code § 39.192 (relating to scope); and 34 Pa. Code § 39.193 (relating to modification or waiver of provisions).