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8 Generac
®
Power Systems, Inc.
If an open bottom is used, the engine-generator is
to be installed over non-combustible materials
and should be located such that combustible
materials are not capable of accumulating under
the generator set.
Only qualified, competent installation contractors or
electricians thoroughly familiar with applicable codes,
standards and regulations should install this standby
electric power system. The installation must comply
strictly with all codes, standards and regulations per-
taining to the installation.
After the system has been installed, you must not
do anything that might render the installation in
noncompliance with such codes, standards and
regulations.
NOTE:
For more information about the installation of a stand-
by system, you can order Engine-Generator Standby
Electric Power Systems Installer’s Guide and
Reference Manual (part #046622) from your Generac
Authorized Service Dealer.
NFPA STANDARDS
The following published standards booklets pertaining
to standby electric systems are available form the
National Fire Protection Association (NFPA),
Batterymarch Park, Quincy, MA 02269:
• NFPA No. 37, STATIONARY COMBUSTION ENGINES
AND GAS TURBINES.
• NFPA No. 76A, ESSENTIAL ELECTRICAL SYSTEMS
FOR HEALTH CARE FACILITIES.
• NFPA No. 220, STANDARD TYPES OF BUILDING
CONSTRUCTION
• NFPA No. 68, GUIDE FOR EXPLOSION VENTING
• NFPA No. 70, NATIONAL ELECTRICAL CODE.
• NFPA No. 30, FLAMMABLE AND COMBUSTIBLE
LIQUIDS CODE.
• NFPA No. 10, INSTALLATION, MAINTENANCE AND
USE OF PORTABLE FIRE EXTINGUISHERS.
OTHER PUBLISHED STANDARDS
In addition to NFPA standards, the following informa-
tion pertaining to the installation and use of standby
electric systems is available:
• Article X, NATIONAL BUILDING CODE, available
from the American Insurance Association, 85 John
Street, New York, N.Y. 10038.
• AGRICULTURAL WIRING HANDBOOK, obtainable
from the Food and Energy Council, 909 University
Avenue, Columbia, MO, 65201.
• ASAE EP-364.2, INSTALLATION AND MAINTE-
NANCE OF FARM STANDBY ELECTRIC POWER,
available from the American Society of Agricultural
Engineers, 2950 Niles Road, St. Joseph, MI 49085.
• A52.1, AMERICAN NATIONAL STANDARD FOR
CHIMNEYS, FIREPLACES AND VENTING SYS-
TEMS, available from the American National
Standard Institute, 1430 Broadway, New York, N.Y.
10018.
GENERATOR LOCATION
Install the generator set, in its protective enclosure out-
doors, where adequate cooling and ventilating air
always is available. Consider these factors:
• Install the unit where air inlet and outlet openings
will not become obstructed by leaves, grass, snow,
etc. If prevailing winds will cause blowing or drifting,
you may need to consider using a windbreak to pro-
tect the unit.
• Install the generator on high ground where water lev-
els will not rise and endanger it.
• Allow sufficient room on all sides of the generator for
maintenance and servicing. A good rule is to allow 3
feet of space on all sides.
• Where strong prevailing winds blow from one direc-
tion, face the generator air inlet openings into the pre-
vailing winds.
• Install the generator as close as possible to the trans-
fer switch. This reduces the length of wiring and con-
duit.
• Install the generator as close as possible to the fuel
supply, to reduce the length of piping. HOWEVER,
REMEMBER THAT LAWS OR CODES MAY REGU-
LATE THE DISTANCE.
Section 2 — Installation
Guardian Liquid-cooled 15 kW, 20 kW and 25 kW Generators
STANDBY GENERATOR INSTALLATION
Connecting this generator to an electrical system normally supplied by an electric utility shall be by
means of a transfer switch, so as to isolate the electric system from the utility distribution system
when the generator is operating. Failure to isolate the electric system by these means will result in
damage to the generator and may also result in injury or death to utility workers due to backfeed of
electrical energy.