Does § 390.23 create an exemption from the FMCSRs each and every time the delivery of electricity is interrupted, no matter how isolated or minor the occurrence?

Question 1: Does § 390.23 create an exemption from the FMCSRs each and every time the delivery of electricity is interrupted, no matter how isolated or minor the occurrence?

Guidance: The rule creates an exemption from the FMCSRs when interruptions of electricity are severe enough...