Storage batteries shall be made inaccessible to other than properly qualified persons by being placed in a separate room or enclosure.
34 Pa. Code § 39.122
This section cited in 34 Pa. Code § 39.85 (relating to general requirements); 34 Pa. Code § 39.121 (relating to applicability); and 34 Pa. Code § 39.201 (relating to storage batteries, transformers, and lightning arresters).