DeVillbiss Air Power Company MGP-4600 Grounding Instructions/Extension Cords, Wire Gauge, Length

GROUNDING INSTRUCTIONS/EXTENSION CORDS

GROUNDING INSTRUCTION

This generator should be grounded to help prevent accidental electrical shock. Shown below is a picture of the grounding lug supplied on your generator. Drive a 3/4" or 1" diameter copper pipe or rod into the ground close to the generator set. The pipe must penetrate moist earth. Using #10 gauge wire, connect one end of the wire into the grounding lug. Connect the other end of the wire to the copper pipe or rod using an approved ground clamp.

Your generator is also equipped with a grounding strap. This grounding strap bolts from the base of the gas engine directly to the frame assembly of the generator for an extension cord.

EXTENSION CORDS

When using an appliance or tool at a considerable distance from the generator, a 3-wire extension cord that has a 3-blade grounding plug and a 3-slot receptacle that accepts the tools plug should be used. A cord of adequate size must be used. Using the following chart to determine the minimum wire size required.

There are basically 2 ways to obtain electricity from a genera- tor:

1.Use of extension cords directly from the generator to the appliance, lights, tools, etc.

2.Use of a double-throw transfer switch installed directly to the main electrical supply outside of house. (See installa- tion of generator below).

Grounding Lug

Extension Cord Wire Gauge Chart

Cord	Wire Gauge
Length	Size	Amperage
0 to 100 ft.	12 ga.	*Up to 20 amp draw
0 to 100 ft.	10 ga.	Up to 30 amp draw

*NOTE: When amperage exceeds 20 amp; a 12 gauge extension cord should not be used for long distances.

An extension cord that is hot to the touch is overloaded. Repair or replace damaged extension cords immediately.

INSTALLATION OF GENERATOR

Potential hazards exist when a portable electric generator is connected to the main electrical supply coming into the house. It is at that point that the electrical generator could feed back into the utility company's system causing possible electrocution of workers who are repairing the electrical lines.

To avoid back feeding of electricity into utility systems, a double-throw transfer switch must be installed between the generator and utility power. The Double-Throw Transfer Switch should be installed by a licensed electrician and in compliance with all state and local electrical codes.

The electrician could also install a sub-panel to isolate the circuits you would want to use during an emergency or electrical power outage. Your generator might not be large enough to handle the load of all the lights, appliances, TV, etc. at one time. To determine the load of each item you will use, refer to page 10.

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