Delivery Inspection
After opening the carton, carefully inspect the transfer
switch components for any damage that may have occurred
during shipment.
If loss or damage is noted at time of delivery, have the
person(s) making delivery note all damage on the freight bill
and affix his signature under the consignor's memo of loss
or damage. If loss or damage is noted after delivery, contact
the carrier for claim procedures. Missing or damaged parts
are not warranted.
Shipment contents
• Automatic transfer switch (1)
• Full complement of branch circuit breakers
• Installation and operator's manual (1)
• Current transformers (2)
To be supplied by installer:
• Connecting wire and conduit
• Various specialty tools/equipment
Typical
— — — — — — Control Wiring
Hot
Contactor
Water
Heater
Branch Circuits
6
Essential Circuit Identification
Essential electrical loads are loads that will be powered by
the home generator. Essential loads are grouped together
and wired into the transfer switch.
TO THE INSTALLER: Consult with home generator owner(s)
to discuss their selection of "Essential Circuits", as described
in the generator operator's manual.
Ensure that the total of the selected load circuits fed by this
transfer switch are within the generator's rated capacity.
The following requirements apply to this type of
isolation system:
• The automatic transfer switch is installed after the main
• The automatic transfer switch has a load rating of
• All wiring must conform to national, state and
The illustration below depicts a typical system installation
and assumes the utility is supplying 120/240 Volt, single-
phase electrical service.
Main
Distribution
Panel
Essential Branch Circuits
distribution panel.
100 Amps. This is the maximum load rating of the total
essential load.
local codes.
Watt -
Hourmeter
Transfer
Switch
Disconnect Switch
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