34 Pa. Code § 39.339
Employes should avoid using fire extinguishing liquids which are not insulating in fighting fires near exposed live parts. If necessary to use them, neighboring equipment should first be killed. Reference should also be made to §§ 39.381-39.391 (relating to killing supply equipment and lines).
34 Pa. Code § 39.339
This section cited in 34 Pa. Code § 39.411 (relating to general provisions); 34 Pa. Code § 39.421 (relating to general provisions); 34 Pa. Code § 39.431 (relating to general provisions); 34 Pa. Code § 39.441 (relating to general provisions); 34 Pa. Code § 39.451 (relating to general provisions); 34 Pa. Code § 39.461 (relating to general requirements); 34 Pa. Code § 39.471 (relating to general requirements); and 34 Pa. Code § 39.491 (relating to general requirements).