Each of such agents, under the direction of the commission, and pursuant to assignment as hereinafter provided, is authorized to supervise and conduct investigations which the commission is authorized to make under the provisions of chs. 30, 31, 87, 191, 192, 194, 195, 196, 197, 198, 201 and 227, Stats., and portions of chs. 66, 88, and 182, Stats., miscellaneous other sections prescribing commission duties, and commission general orders; and to conduct hearings and the taking of testimony bearing upon any investigation or hearing undertaken or held by the commission.
Wis. Admin. Code Public Service Commission PSC 1.02