Generac Power Systems 0K8420-A Installation Manuallines page 2

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Purpose and Scope of This Manual
READ THIS MANUAL THOROUGHLY. This manual has been prepared to familiarize personnel involved with the
installation of generator sets with the manufacturer's installation requirements. Information and instructions contained
herein are not intended to replace or supersede, local, state, or national safety, electrical, and building codes pertaining
to such installations. Applicable laws, codes, and standards must always take precedence over the recommendations
contained herein. Always check with the local Authority Having Jurisdiction (AHJ) for the codes or standards that apply.
Only authorized dealers or qualified, competent installation contractors or electricians thoroughly familiar with applica-
ble codes, standards, and regulations should install this standby electric power system. The installation must be in strict
compliance with all codes, standards, and regulations. Start-up procedures must be performed by an Authorized Gen-
erac Service Dealer.
It is not intended that this manual be used by any unqualified person for the purpose of installing a generator set. Instal-
lation, inspection, and testing of the system should be attempted only by competent, qualified electricians or installation
contractors who are familiar with the equipment and with all installation codes and requirements.
It would be impossible to provide detailed coverage of every installation configuration. For this reason, much of the
information contained in this manual is general in nature. Illustrations of typical installations are not intended to serve
as detailed installation plans. Always have the drawings and manuals for the specific unit being installed before begin-
ning the installation.
The information in this manual can be used in the planning and design process phase of selecting and purchasing a
generator set for a standby power application.
Sources of Information
Installation information and recommendations contained herein are derived from the following sources:
Knowledgeable engineers, service technicians, and service representatives.
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The National Electric Code (NEC).
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National Fire Protection Association (NFPA) codes and standards.
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Other sources as listed in Subsection 1.7.
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Various manufacturing standards and best practices.
•
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If this generator is used to power electrical load circuits normally powered by a utility power source, it
is required by code to install a transfer switch. The transfer switch must effectively isolate the electric
system from the utility distribution system when the generator is operating. Failure to isolate an electri-
cal system by such means may result in damage to the generator and may also result in injury or even
death to utility power workers due to backfeed of electrical energy.
!
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.
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After the system has been installed, do nothing that might render the installation in non-
compliance with such codes, standards, and regulations.
Every effort was made to ensure the information in this manual was both accurate and current at the time it was
released. However, the manufacturer reserves the right to change, alter, or otherwise improve this product at any time
and without prior notice.
ii Installation Guidelines for Spark-Ignited Stationary Emergency Generators