7-3-15: ELECTRIC HEAT QUALIFICATIONS AND REGULATIONS:
Each electric heat installation must be provided with a meter recording only current used for electric heat and each installation to qualify for electric heat must have a minimum connected capacity of 5,000 watts unless the installation furnishes electric heat to the entire building or unit, in which case the minimum connected capacity may be less than 5,000 watts. (1975 Code § 7-3-13)