Voltage Limits

(1) Each utility shall adopt and file with the Commission standard nominal service voltages for each of the several areas into which its distribution system or systems may be divided. (a) Secondary Voltages - Delivery Point The variations of voltage shall be no more than 7½ or below the standard voltage at any time. Where three (3) phase service is provided, the utility shall exercise reasonable care to assure that the phase voltages are in balance. (b) Primary Voltages - Delivery Point The variations of voltage shall be no more than five percent (5%) above or below the standard voltage at that time. (c) Limitations Limitations in subparagraphs (c) and (d) above do not apply to special contracts in which the customer specifically agrees to accept service with unregulated voltage. (d) Exceptions to Voltage Requirements: Voltage outside the limits specified will not be considered a violation when the variations 1. Arise from the action of the elements. 2. Are infrequent fluctuations not exceeding five (5) minutes duration. 3. Arise from service interruptions. 4. Arise from temporary separation of parts of the system from the main system. 5. Are from causes beyond the control of the utility.