§ 39.143. Isolation by elevation.
All conductors over 750 volts, and ungrounded bare conductors over 300 volts to ground shall be isolated by elevation as required by § 39.106 (relating to isolating live parts by elevation), unless guarded in accordance with § 39.144 (relating to guarding conductors), so that no person may inadvertently come in contact with them. Buses and bus structures and line connections thereto, installed in accordance with § § 39.104 and 39.160 (relating to working space about electrical equipment; guarding live parts of switches and automatic cut-outs not installed on switchboards) in suitable locations specially arranged for such purposes, shall not be required to be so isolated.
Cross References This section cited in 34 Pa. Code § 39.185 (relating to guarding live parts).
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