Product Manual

4
TRANSFER SWITCH MECHANISM
This transfer switch consists of a Utility and a Generator supply
2-pole switch which feeds a common bus (the lower half of the
panelboard). The switches look similar to a circuit breaker but do
not have internal current sensing components. The two switches
are mechanically interlocked so that both sources cannot feed the
common bus at the same time. The operator is a rotary device
that actuates the arms that push on the 2-pole switch handles
transferring the customer load from one source to the other. The
operator returns to a neutral position so the arms move freely and
the switches can be operated by hand for a manual transfer.
This transfer switch is used with a single-phase system, when the
single-phase NEUTRAL line is to be connected to a Neutral Lug and
is not to be switched (Figure 1).
Solderless, screw-type terminal lugs are standard.
This transfer switch is suitable for control of motors, electric dis-
charge lamps, tungsten filament and electric heating equipment
where the sum of motor full load ampere ratings and the ampere
ratings of other loads do not exceed the ampere rating of the
switch and the tungsten load does not exceed 30 percent of the
switch rating.
This transfer switch is for use in optional standby systems only
(NEC article 702).
Figure 2 — Transfer Mechanism
TRANSFER SWITCH DATA DECAL
A DATA DECAL is permanently affixed to the transfer switch enclo-
sure (Figure 2). Use this transfer switch only with the specific
limits shown on the DATA DECAL and on other decals and labels
that may be affixed to the switch. This will prevent damage to
equipment and property.
When requesting information or ordering parts for this equipment,
make sure to include all information from the DATA DECAL.
Record the Model and Serial numbers in the space provided below
for future reference.
Figure 2 — Data Decal
PANELBOARD DATA
GENERAC POWER SYSTEMS, INC.
WHITEWATER, WI
ASSEMBLY NUMBER
MODEL NUMBER
SERIAL NUMBER
PANELBOARD ENCLOSURE
The standard switch enclosure is a National Electrical Manufacturer’s
Association (NEMA) type 1 or type 3R depending on the model.
SAFE USE OF TRANSFER SWITCH
Before installing, operating or servicing this equipment, read the
SAFETY RULES (inside front cover) carefully. Comply strictly
with all SAFETY RULES to prevent accidents and/or damage to
the equipment. The manufacturer recommends that a copy of the
SAFETY RULES are posted near the transfer switch. Also, be sure
to read all instructions and information found on tags, labels and
decals affixed to the equipment.
The publications that outline the safe use of transfer switches are
the following:
NFPA 70; National Electrical Code•
NFPA 70E; Standard for Electrical Safety in the Workplace•
UL 1008, Standard for Safety - Automatic Transfer Switches•
UL 67, Standard for Safety - Panelboard•
NOTE:
It is essential to use the latest version of any standard to ensure
correct and current information.
General Information