The secondary of a current transformer cannot be opened while the transformer is energized. If the primary of the current transformer cannot be deenergized before work is performed on an instrument, a relay, or other section of a current transformer secondary circuit, the circuit must be bridged so that the current transformer secondary will not be opened.
Wash. Admin. Code § 296-45-52510
Statutory Authority: RCW 49.17.010, [49.17].040, [49.17].050 and [49.17].060. 98-07-009, § 296-45-52510, filed 3/6/98, effective 5/6/98.