Power Source Connection; Power Requirements; Grounding; Grounded Tools: Tools With 3-Prong Plugs - General International AC1220 Owner's Manual

20 gallon oil free electric air compressor
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General International
This tool is designed to operate on a properly grounded 120 volt, 60 Hz, single phase alternating current
(AC) power source fused with a 15 amp time delayed circuit breaker. It is recommended that a qualified
electrician verify the ACTUAL VOLTAGE at the receptacle into which the tool will be plugged and confirm that
the receptacle is properly grounded. The use of the proper circuit size can eliminate nuisance circuit breaker
tripping when using your tool. Improper performance, and/or, damage to the tool will result if operated on
inadequate, or excessive power.
DO NOT OPERATE THIS TOOL if the ACTUAL power source voltage is less than 105
C AU T IO N
volts AC or greater than 132 volts AC.
• This machine must be grounded while in use to protect the operator from electrical shock. This
compressor is equipped with an electrical cord that has an equipment grounding conductor and a
grounding plug. The plug MUST be plugged into a matching receptacle that is properly installed and
grounded in accordance with ALL local codes and ordinances.
• DO NOT MODIFY THE PROVIDED PLUG. If it will not fit the receptacle, have the proper receptacle
installed by a qualified electrician.
• CHECK with a qualified electrician or service person if you do not completely understand the grounding
instructions, or if you are not sure the tool is properly grounded.

Grounded Tools: Tools with 3-Prong Plugs

Tools marked with Grounding Required have a 3-wire cord and 3-prong grounding plug. The plug must be
connected to a properly grounded outlet. If the tool should electrically malfunction or break down, grounding
provides a low resistance path to carry electricity away from the user, reducing the risk of electric shock.
(See Figure 1.)
A
B
fig 1
For optimum air compressor performance an extension cord should not be used unless absolutely
necessary.
• USE A PROPER EXTENSION CORD. Make sure your extension cord is in good condition. When using
an extension cord, be sure to use one heavy enough to carry the current your product will draw. An
undersized cord will cause a drop in line voltage, resulting in loss of power and cause overheating.
• Be sure your extension cord is properly wired and in good condition. Always replace a damaged
extension cord or have it repaired by a qualified person before using it. Protect your extension cords
from sharp objects, excessive heat and damp or wet areas.
Grounded tools require a 3-wire extension cord.
As the distance from the supply outlet increases, you must use a heavier gauge extension cord. Using
extension cords with inadequately sized wire causes a serious drop in voltage, resulting in loss of power
and possible tool damage.
If you must choose between an electrical extension cord and a longer air hose, choose the latter. It is
far better for the life of the compressor. If necessary, care must be taken in selecting an extension cord
appropriate for use with your specific air compressor.

POWER SOURCE CONNECTION

Power Requirements

GROUNDING

WARNING
The grounding prong in the plug is connected through the green wire inside the
cord to the grounding system in the tool. The green wire in the cord must be the
only wire connected to the tool's grounding system and must never be attached
to an electrically live terminal.
Your tool must be plugged into an appropriate outlet, properly installed and
grounded in accordance with all codes and ordinances. The plug and outlet
should look like those in the following illustration.

EXTENSION CORDS

WARNING
8

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