Subaru Robin Power Products R1700i service manual

= (Power consumption)

(4)Appliances without any indication as to power consumption

Some appliances have no indication as to power consumption; but instead the work load (output) is indicated. In such a case, power consumption is to be worked out according to the numerical formula mentioned below.

(Output of electrical appliance)

(Efficiency)

Efficiencies of some electrical appliances are as follows :

Single-phase motor . . . . . .0.6 to 0.75 (The smaller the motor, the lower the efficiency) Fluorescent lamp . . . . . . . .0.7 to 0.8

Example 1: A 40W fluorescent lamp means that its luminous output is 40W. Its efficiency is 0.7 and accordingly, power consumption will be 40÷0.7= 57W. As explained in Item (2), multiply this power consumption value of 57W by 1.2 to 2 and you will get the figure of the necessary capacity of a generator. In other words, a generator with a rated output of 1000W capacity can light nine to fourteen 40W fluorescent lamps.

Example 2 : Generally speaking, a 400W motor means that its work load is 400W. Efficiency of this motor is 0.7 and power consumption will be 400÷0.7= 570W. When this motor is used for a motor-driven tool, the capacity of the generator should be multipled by 1.2 to 3 and 570W as explained in the ltem (3).

The power consumption of electrical appliances is shown below for reference, use this as a measuring guide when choosing electrical appliances and which generator to use.

Electrical Appliances

Electrical	Starting	Electrical	Power
			Consumption
appliances	wattage	appliances
			(W)
		Rice Cooker	300 to 1000
		Coffee Maker	450
	One of power	Electric grill	800 to 1400
	consumption
		Color TV	100
		Hair dryer	1200
	1.2 to 2 times	Air conditioner	1200
Household
		Microwave	800 to 1200
	of power
Appliances	consumption
		Lawn mower	400
		Refrigerator	100 to 260
		Vacuum cleaner	1100
	3 to 5 times
		Washer	500
	of power
		Air Cooler	600
	consumption
		Deep well pump	600
		Mercury lamp	40 to 400

Electrical Appliances

Electrical	Starting	Electrical	Power
			Consumption
appliances	wattage	appliances
			(W)
	One of power	Soldering iron	300 to 1000
		Lighting for
	consumption		600
		young sardines
		Drill	350 to 600
		Disc Grinder	500 to 1200
	1.2 to 2 times	Electrical hammer	1000
Electrical tools	of power	Chain sow	1200
	consumption
/Architecture		Impact wrench	1200
		Vibrator	800 to 1200
		Drill for shiitake	400
	3 to 5 times	Air compressor	1000 to 2600
		Winch	1100
	of power
	consumption
		water pump	500

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