Ind. Admin. Code tit. 170, r. 4-1-19
Authority: IC 8-1-1-3; IC 8-1-2-4
Affected: IC 8-1-2-33
Sec. 19. Standard Frequency. Each public utility supplying alternating current shall adopt a standard nominal frequency of 60 HZ. Momentary variations of frequency of more than five percent (5%), which are clearly due to no lack of proper equipment or reasonable care on the part of the public utility, shall not be considered a violation of this rule.
(Indiana Utility Regulatory Commission; No. 33629: Standards of Service For Electrical Utilities Rule 17; filed Mar 10, 1976, 9:10 am: Rules and Regs. 1977, p. 354; readopted filed Jul 11, 2001, 4:30 p.m.: 24 IR 4233; readopted filed Apr 24, 2007, 8:21 a.m.: 20070509-IR-170070147RFA; readopted filed Aug 2, 2013, 2:16 p.m.: 20130828-IR-170130227RFA; readopted filed Apr 11, 2019, 9:04 a.m.: 20190508-IR-170190136RFA; readopted filed Sep 12, 2025, 11:43 a.m.: 20251001-IR-170240381RFA)