Robin America R1700i Service Manual page 11

(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
appliances wattage
Coffee Maker
One of power
consumption
Air conditioner
1.2 to 2 times
Household
of power
Appliances
consumption
Vacuum cleaner
3 to 5 times
of power
consumption
Deep well pump
Mercury lamp
= (Power consumption)
Power
Electrical
Consumption
appliances
(W)
Rice Cooker 300 to 1000
450
Electric grill 800 to 1400
Color TV 100
Hair dryer 1200
1200
Microwave 800 to 1200
Lawn mower 400
Refrigerator 100 to 260
1100
Washer 500
Air Cooler 600
600
40 to 400
Electrical Appliances
Electrical Starting
appliances wattage
One of power
consumption
1.2 to 2 times
of power
Electrical tools
consumption
/Architecture
3 to 5 times
of power
consumption
– 8 –
Power
Electrical
Consumption
appliances
(W)
Soldering iron 300 to 1000
Lighting for
600
young sardines
Drill 350 to 600
Disc Grinder 500 to 1200
Electrical hammer 1000
Chain sow 1200
Impact wrench 1200
Vibrator 800 to 1200
Drill for shiitake 400
Air compressor 1000 to 2600
Winch 1100
water pump 500