Black Max BM10680S Operator's Manual page 12

ELECTRIC MOTOR LOADS
It is characteristic of common electric motors in normal operation to draw up to six times their running current while starting.
This table may be used to estimate the watts required to start electric motors; however, if an electric motor fails to start or
reach running speed, turn off the appliance or tool immediately to avoid equipment damage. Always check the requirements
of the tool or appliance being used compared to the rated output of the generator.
Motor Size (H.P.)
1/8
1/6
1/4
1/3
1/2
3/4
1
NotiCe:
Operating voltage and frequency requirement of all
electronic equipment should be checked prior to plug-
ging them into this generator. Damage may result if the
equipment is not designed to operate within a +/- 10%
voltage variation, and +/- 3 hz frequency variation from
the generator name plate ratings. To avoid damage, al-
ways have an additional load plugged into the generator
if solid state equipment (such as a television set) is used.
A power line conditioner is recommended for some solid
state applications.
ELECTRICAL
Running Watts
275
275
400
450
600
850
1100
Page 8 — English
Watts Required to Start Motor
Universal Capacitor
N/A
600
800
950
1000
1200
N/A
GENERATOR CAPACITy
Make sure the generator can supply enough continuous (run-
ning) and surge (starting) watts for the items you will power
at the same time. Follow these simple steps.
1. Select the items you will power at the same time.
2. Total the continuous (running) watts of these items. This
is the amount of power the generator must produce to
keep the items running. See the wattage reference chart
at right.
3. Estimate how many surge (starting) watts you will need.
Surge wattage is the short burst of power needed to
start electric motor-driven tools or appliances such as a
circular saw or refrigerator. Because not all motors start
at the same time, total surge watts can be estimated by
adding only the item(s) with the highest additional surge
watts to the total rated watts from step 2.
Example:
Tool or Appliance
Window AC,
10,000 BTU
Refrigerator
1/3 HP Well Pump
27 in. Television
Light (75 Watts)
Total Starting Watts Needed
Split Phase
850 1200
850 2050
1050 2400
1350 2700
1800 3600
2600
3300
Running Additional
Watts* Starting Watts*
1200
700
1000
500
75
3475 Total 2200 Highest
Running Watts Starting Watts
Total Running Watts
Highest Starting Watts
—
—
1800
2200
2000
0
0
3475
+ 2200
5675