calculate the power consumption of the device involved. The calculated power consumption is adjusted depending on the type of the load, and according to paragraphs from (1) to (3).
(Power consumption) = (Mechanical equivalent of a device) + (Efficiency)
Efficiency
Motors: 0.6 2. 0.8
Fluorescent lamps: 0.7 x0.8
Example: As for a 40 W fluorescent lamp with a lighting output of 40 W, and assuming that the power consumption of this lamp is 0.7, the power consumption can be calculated as follows:
40 + 0.7 = 57 W
Furthermore, as per paragraph (2), the power consumption is multiplied by a factor of
1.2to 2, producing a power consumption of 70 to 115 W. Therefore, with a generator having a rated output of 1000 W, 8 to 14 lamps can be used.
Example: In the case of a 200 W motor, the mechanical equivalent of the motor is 200 W. Assuming that the efficiency of the motor is 0.7, the power consumption is calculated
as 200 I 0.7 = 285 W. Similar to the above, the calculated power consumption is then multiplied as per (3)a, or
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I | Incandescent | lamp, | electric | heater, | etc. | I | Up to | 800 W |
| I | Upto | 1ooow |
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| Fluorescent | lamp, | mercury | lamp, | etc. |
| Up to | approx. | 500 | W | Up to | approx. | 650 | W |
| Motordriven | tools | etc. |
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| Up to | approx. | 500 | W | Up to | approx. | 600 | W |
| Pump and compressor drive | motors |
| Up to | approx. | 250 | W | Up to | approx. | 300 | W | |||
Note 1: With
Note 2: As for the tools using the motors specified in paragraphs (3) and (4), the power requirement for starting the tools varies according to the types of motor and the load conditions at the time of starting.
