R

PORTABLE GASOLINE GENERATORS

EXTENSION

CORDS

Only use grounded extension cords. Be sure to use extension cord with proper wire gauge size. See chart below.

Recommended Minimum Wire Gauges (AWG) for Extension Cords

Ampere

AWG for Length of

Load

 

Cord in Feet

 

 

50'

100'

150'

2

18

18

18

3

18

18

18

4

16

16

16

5

16

16

16

6

16

16

14

8

16

14

12

10

16

14

12

12

14

14

12

14

14

12

10

16

12

12

10

20

10

10

8

GENERATOR

 

GROUNDING

 

WARNING: You must prop- erly earth-ground generator be- fore starting. This will help guard againstdeadlyelectricshock.Only use grounded plugs with genera-

5.Drive grounding point into ground. Note: Grounding point can be a stake, grounding rod, or pipe. Grounding point should be copper or brass.

6.Attach ground wire to grounding point.

Youmustsupplythegroundwireandground- ing point. These do not come with generator. Follow the National Electrical Code and all state and local codes. Consult your power company or a licensed electrician.

WARNING: For a grounding point, do not use metal pipe be- ing used to carry combustible materials or gases.

Flat Washer

SEMS Nut

Ground Bolt

Spade

Connector

H

Detail A

E

FUEL

 

F

STANDBY INSTALLATION TO HOME OR BUILDING

WARNING: Have standby in- stallation performed by a skilled, licensed electrician. Do not let anyone else wire into a utility circuit. Personal injury, equip- ment damage, or damage to home could occur.

IMPORTANT: This generator will not power your entire home. Most home utility electric service is more than 60 amps. This will exceed generator output. Only power needed items during a power outage. Make sure total wattage of electrical load does not exceed rated wattage of generator.

You may need to use this generator as a standby power source. During a power out- age, the generator will power selected items in a building. Have generator and additional wiring installed by a skilled, licensed electri- cian. This is not a do-it-yourself job. Follow all local codes.

WARNING: The electrician must install a double-throw transfer switch. This isolates ex- isting electrical circuits from the utility power line. If not isolated, generator output will back-feed into utility power line. This may

tor. Only use grounded extension cords. Only use three-wire or double-insulated power tools.

Grounding generator helps prevent electric shock from a ground fault condition. Follow these steps to ground your generator:

1. Locate ground bolt on generator hous-

ing (see Figure 7).

Ground

Wire

Copper or Brass

Alternator

Grounding Point

 

 

120V

 

120VI

 

 

GFC

 

 

TER

AGE

120

R ME

LT

+

HOU

VO

240

120

CTOR

 

ONLY

SELE

 

LE

 

 

O-ID

 

 

AUT

 

 

ON

 

SET

OFF

RE

 

RES

ET

 

ET

 

 

RES

 

 

electrocute a power company line repair person.

2.

Loosen SEM nut on ground bolt. Note:

 

Do not remove SEM nut from bolt.

3.

Attach a spade connector to the end of

 

a #10-8 stranded-copper ground wire.

4.

Attach spade connector to ground bolt

 

between flat washer and SEM nut (see

 

Detail A in Figure 7).

Figure 7 - Grounding Generator (Model MGR4500I Shown)

8

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Master Lock MGR2900, MGR4500I, MGR6000I Extension Cords, Generator Grounding, Standby Installation to Home or Building