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Demand factor

Demand factor

Demand factor

Does someone know reference to an international standard like IEEE or IEC that could help in determining the time period that should be used for calculating the demand factor of a motor? Also, does any standard allow applying demand factor to motor FLA's for voltage drop calculations? I am in Canada and the code that I refer is Canadian Electrical Code part 1.

RE: Demand factor

Demand factors apply to feeders with a diversity of loads.
Demand factors are covered in the Canadian Electrical Code
Section 8- Circuit loading and demand factors section 8-Demand Factors
For individual Motors you want to see Service Factors
Section 28 — Motors and generators
28-010 Special terminology
Service —
Continuous duty service
Non-continuous duty service
— an application of a motor where the apparatus driven by the motor has
the characteristics described in
Section 0, Definitions, under Duty, as Short-time duty, Intermittent
duty, Periodic duty, and Varying duty.

Voltage drop: See Rule 8-102 Voltage drop
Se also:
Table 27 Determining conductor sizes for motors for different requirements of service 352
Appendix B Notes on Rules:
Section 8
Section 28

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