A. The starting current drawn from the city's lines shall be considered the nameplate locked rotor current or that guaranteed by the manufacturer.
1. At its option the city may determine the starting current by test, using a stop ammeter with not more than 15% over-swing or an oscillograph,_ disregarding the value shown for the first 10 cycles subsequent to energizing the motor.
2. If the starting current for a single motor, 50 hp or smaller, exceeds the value stated in the National Electrical Code, reduced voltage starting or other suitable means must be employed, at the customer's expense, to limit the current to the value specified, except where specific exemptions are provided.
3. All motors larger than 50 hp shall have reduced voltage starting.
B. Reduced-voltage starters may be omitted on any 50 hp or smaller motor in a group installation provided that its starting current does not exceed three times the maximum demand in amperes of the entire installation.
(Ord. 588, 1991).