Black Max BM905530 Operator's Manual page 13

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 plugging
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, always
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.
GROUND FAULT CIRCUIT INTERRUPTER
See Figure 1.
The 20 amp, 120 volt receptacles on the generator are
protected by a Ground Fault Circuit Interrupter (GFCI),
which guards against the hazards of ground fault currents.
An example of ground fault current is the current that would
flow through a person who is using an appliance with faulty
insulation and, at the same time, is in contact with an electrical
ground such as a plumbing fixture, wet floor, or earth.
GFCI receptacles do not protect against short circuits,
overloads, or shocks.
The GFCI receptacles can be tested with the TEST and
RESET buttons.
To test:
 Depress the TEST button. This should cause the Reset
button to pop out.
 To restore power, depress the RESET button.
Perform this test monthly to ensure proper operation of the
GFCI. If the generator is stored outdoors, unprotected from
the weather, test the GFCI receptacle before each use.
ELECTRICAL
Running Watts
275
275
400
450
600
850
1100
Page 9 — 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 Starting
Watts* Watts*
1200
700
800
500
75
3275 Total 2200 Highest
Running Watts Starting Watts
Total Running Watts
Highest Starting Watts
—
—
1800
2200
2000
0
0
3275
+ 2200
5475