Red Book - Long Island Power Authority
Red Book - Long Island Power Authority Red Book - Long Island Power Authority
34 Section 8 – Revenue Metering 8.9.3 Control cable for totalized meter installations shall consist of (4) triad 16AWG stranded copper conductors, with individual triad shield and an overall cable shield. Conductor and cable jacket PVC installation shall be rated 90ºC, 600V. Triads shall be color coded with tracers.
2012 Edition Redbook 9.0 MOTORS AND CONTROLLERS 9.1 GENERAL Before any large motors or special apparatus are installed, it is necessary to consult LIPA regarding the character and adequacy of the available service and the manner in which the equipment may be connected. 9.2 MOTOR PROTECTION 9.2.1 For the customer's protection, all motors and special apparatus should be equipped with suitable under voltage tripping devices to prevent sustained under voltage operation and equipment damage. 9.2.2 All poly-phase motors shall be equipped with suitable protection to prevent single phase operation, improper rotation and excessive heating due to phase current unbalance. 9.2.3 LIPA will not be responsible in any way for damage to customer's equipment due to the failure of the customer to provide adequate protection. 9.3 MOTOR STARTING LIMITATIONS 9.3.1 The starting of a motor on an electric circuit causes a momentary fluctuation of the circuit voltage each time the motor starts. Where this effect is pronounced, a visual disturbance or lighting flicker may be observed by the customer or other customers served from the same system. In extreme cases, the motor itself may have difficulty in starting. To minimize this problem, it is necessary to set limits upon the starting current permitted in any motor installation. These limits are designed to cover typical cases, and LIPA gives no warranty that particular conditions may not later require changes. 9.3.2 Typical motor starting limitations based on motor start cycles not exceeding four starts per hour, are listed on the tables on pages 36 thru 38. Separate limitations are prescribed for conventional motorized equipment rated in BTU's per hour. Cases not covered therein should be referred to LIPA. 9.3.3 All motors connected for operation at 120 or 240 volts which do not exceed the locked rotor starting current limitations as stated in tables 1 and 2, and are normally started four times per hour or less, may be connected directly to LIPA’s supply lines. 9.3.4 Motors that do not comply with the locked rotor starting current limitations, or not covered therein, shall be discussed with LIPA. Specific inrush limitations will be supplied and will vary with the size, type, demand and location of service. 9.3.5 When starting devices are used, the total current taken by the motor is not restricted by the rules but may have to be built up in steps, each of which does not exceed the maximum allowable motor starting current as stated by the company. When a step type starter is used, an appreciable time must be allowed on each step. 9.3.6 When motors are started in a group instead of individually, the starting current limitations apply to the group and not to the individual motors. 35
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34<br />
Section 8 – Revenue Metering<br />
8.9.3 Control cable for totalized meter installations shall consist of (4) triad 16AWG stranded<br />
copper conductors, with individual triad shield and an overall cable shield. Conductor and<br />
cable jacket PVC installation shall be rated 90ºC, 600V. Triads shall be color coded with<br />
tracers.