320.1 Delivery of Electric Energy
If Customer has satisfied and continues to satisfy all conditions and perform all obligations contained in the foregoing service rules, the Cooperative shall provide electric energy to Customer at the point of delivery. The Cooperative may, however, limit the amount of electric energy furnished.
320.2 Characteristics of Electric Energy
A. Voltage
The Cooperative adopts the following standard voltages for distribution:
| Single Phase | Three Phase |
|---|---|
| 120/240 | 120/240 |
| 240/480 | 120/208 |
| 240/480 |
Insofar as practicable the Cooperative maintains its standard voltages within the variations permitted by the Public Utility Commission of Texas. See Substantive Rule 23.62(f). Customer should obtain from the Cooperative the phase and voltage of the service available before committing to the purchase of motors or other equipment.
B. Frequency
The Energy Reliability Council of Texas (ERCOT) controls the frequency of current provided by the Cooperative. Generally, the Cooperative provides alternating current at a standard frequency of 60 cycles per second. Except for infrequent and unavoidable fluctuations, this standard is usually maintained within one-tenth (1/10) of a cycle per second.
C. Electric Terms
1. A.C. – Alternating Current
2. Demand – The maximum rate-of-use of energy. The demand maybe:
Measured by a recording or indicating instrument (demand meter) showing, unless otherwise specified, the greatest fifteen-minute-rate-of-use of energy.
3. Horsepower (H.P.)
As used herein, horsepower shall be computed as the equivalent of 746 watts (approximately ¾ of a kw-hr).
4. Kilovoltampere (KVA)
Unit of measure of rate-of-use which determines electrical capacity required. It is obtained by multiplying the voltage of a circuit by its amperage.
5. Kilowatt (KW)
Amount of measurement of rate-of-use of electrical energy – 100 watts.
6. Kilowatt-hour (kWh)
Unit of measurement of a quantity of energy – an amount equivalent to the use of 1,000 watts for one hour.
7. Ampere
A unit of electric current that is equivalent to the flow of one volt applied across the resistance of one ohm.
8. Ohm
A unit of electrical resistance equal to the resistance of a circuit in which a potential difference of one volt produces a current of one ampere.
9. Volt
A unit of electrical measurement that is equivalent to the flow of one ampere across a resistance of one ohm.
10. Power Factor
As used herein, in a single phase circuit the power factor is the ratio of the watts to volt-amperes; and in a polyphase circuit the power factor is the ratio of the total watts to the vector sum of the voltamperes in the several phases.
11. Standard Single-Phase Secondary
Alternating current, 60 cycles, nominally 120 volts, 2 wire, or nominally 120-240 volts, 3 wire.
For consumer service from this type of construction, a standard single phase meter, 120 volts 2 wire or a standard single phase meter 120-240 volts, 3 wire would be used.
12. Standard Polyphase Secondary
Alternating current, 60 cycles, nominally 240 volts, 3 phase, 3 wire.
For consumer service from this type of construction, a 240 volt, 3 phase, 3 wire meter is used.