ELECTRICAL

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

Continuous

 

Surge

Running) Watts

(Starting) Watts

 

 

 

 

 

 

 

Furnace Fan

800

 

2350

 

 

 

 

 

 

 

Refrigerator

700

 

2200

 

 

 

 

 

 

 

Well Pump

1000

 

1500

 

Light (75 Watts) x 4

300

 

300

 

 

 

 

 

 

 

2800 Total

2350 Highest

 

Running Watts

Surge Watts

Total Continuous (Running) Watts

2800

 

Plus Highest Additional Surge Watts

+ 2350

 

 

 

 

 

Equals Total Generator Output Required

5150

 

POWER MANAGEMENT

To prolong the life of the generator and attached devices, it is important to take care when adding electrical loads to the generator. There should be nothing connected to the generator outlets before starting its engine. The correct and safe way to manage generator power is to sequentially add loads as follows:

1.With nothing connected to the generator, start the engine as described later in this manual.

2.Plug in and turn on the first load, preferably the largest load you have.

3.Permit the generator output to stabilize (engine runs smoothly and attached device operates properly).

4.Plug in and turn on the next load.

5.Again, permit the generator to stabilize.

6.Repeat steps 4 and 5 for each additional load.

Never add more loads than the generator capacity. Take special care to consider surge loads in generator capacity as previously described.

CAUTION:

Do not overload the generator’s capacity. Exceeding the generator’s wattage/amperage capacity can damage the generator and/or electrical devices connected to it.

 

Estimated

Estimated

Application/Equipment

Starting

Run Watts

 

Watts

 

 

 

 

 

Emergency / Home Standby

 

 

 

 

 

Clock Radio

50

50

 

 

 

Lights (qty. 4 x 75 W)

  300

300

 

 

 

Refrigerator

700

2200

 

 

 

Furnace Fan

800

2350

 

 

 

Water Well Pump

1000

1500

 

 

 

Microwave

1000

1000

 

 

 

Sump Pump

1050

2200

 

 

 

Electric Range (per element)

2100

2100

 

 

 

Job Site

 

 

 

 

 

Electric Drill − 1/2 HP

600

900

 

 

 

Airless Sprayer − 1/3 HP

600

1200

 

 

 

Quartz Halogen Work Light

1000

1000

 

 

 

Reciprocating Saw

960

1920

 

 

 

Air Compressor − 1 HP

1600

4500

 

 

 

Circular Saw − 7-1/4 in.

1400

2300

 

 

 

Planer/Jointer − 6 in

1800

1800

 

 

 

Miter Saw − 10 in.

1800

1800

 

 

 

Table Saw/Radial Arm Saw − 10 in.

2000

2000

 

 

 

*Wattages listed are approximate. Check tool or appliance for actual wattage.

Page 9 — English

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Homelite UT902250 manuel dutilisation Generator Capacity, Power Management, English