GR3000

Generator Operation (Continued)

Installation for Stand-By Use

Precautions must be taken to prevent electrical back feeding into utility systems. This requires isolation of the electrical system. To isolate the electrical system, perform the following procedures:

1.Turn off the main electrical system switch prior to connecting the unit.

2.In accordance with national and local standards, a double throw transfer switch must be installed in the system.

Always shut off main power prior to temporary connection of the unit to a building electrical

system.

Installation of the unit as a backup electrical source must be performed by a qualified

(licensed or certified) electrical technician.

Table 1 - Estimated Power Usage (Watts)

Load Device

Watts

Load Device

Watts

Load Device

Watts

Load Device

Watts

Bench grinder

1400-2500

Electric fry pan

1500

Radio

50-200

Window air

1500-2200

(8 in)

 

 

 

 

 

conditioner

 

Coffee maker

400-700

Fan

40-200

Refrigerator or

130-1200

Microwave

1000-1500

Electric drill

440-600

Circular saw

1400-2300

freezer

 

oven

 

 

 

 

 

(3/8 inch,

 

(Heavy duty

 

Sump pump

800-2200

Water pump

1000-3000

4 amps)

 

7-1/4 inch)

 

Television

200-500

Water heater

1000-5000

Electric drill

600-900

Table saw

1800-4500

 

 

 

 

(1/2 inch,

 

(10 inch)

 

Light bulb

As Rated

Space heater

600-4800

5.4 amps)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 2 - Extension Cords

 

 

 

 

 

Maximum Recommended Lengths (in feet)

 

 

 

 

 

 

 

 

 

 

 

Amps

Watts 120 V

Watts 240 V

#8 Wire

#10 Wire

#12 Wire

#14 Wire

#16 Wire

2.5

300

600

 

1000

600

375

250

5

600

1200

 

500

300

200

125

7.5

900

1800

 

350

200

125

100

 

 

 

 

 

 

 

 

10

1200

2400

 

250

150

100

50

15

1800

3600

 

150

100

65

 

20

2400

4800

175

125

75

50

 

 

 

 

 

 

 

 

 

25

3000

6000

150

100

60

 

 

30

3600

7200

125

65

 

 

 

40

4800

9600

90

 

 

 

 

 

 

 

 

 

 

 

 

TAble 3 - Welding Cables

Total Cable Length *

0 - 20 feet (0 - 6 m)

20 - 40 feet (6 - 12 m)

40 - 60 feet (12 - 18 m)

Maximum Welding Current

 

Recommended Sizes of Copper Welding Cables

100 A

6 AWG (16 mm2)

6 AWG (16 mm2)

4 AWG (25 mm2)

150 A

6 AWG (16 mm2)

4 AWG (25 mm2)

2 AWG (35 mm2)

200 A

6 AWG (16 mm2)

4 AWG (25 mm2)

2 AWG (35 mm2)

250 A

6 AWG (16 mm2)

2 AWG (35 mm2)

1 AWG (50 mm2)

* Total cable length is the sum of the ground and electrode cable lengths.

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