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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 their 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
• Installation and operator's manuals
• Current transformers (2)
To be supplied by installer:
• Connecting wire and conduit
• Various specialty tools/equipment
Mounting Guidelines
The transfer switch system circuitry is enclosed in a NEMA Type 3R
enclosure suitable for indoor/outdoor use. Guidelines for mounting the
enclosure include:
• Install enclosure on a firm, sturdy supporting structure.
• The transfer switch enclosure must be installed with minimum
Typical
— — — — — — Control Wiring
Hot
Water
Heater
Alternate
— — — — — — Control Wiring
Hot
Contactor
Water
Heater
Branch Circuits
6
Contactor
Main
Distribution
Panel
Branch Circuits
Emergency
Load
Center
Disconnect Switch
NEMA 3R hardware for conduit connections.
• To prevent switch contact distortion, level and plumb the enclosure.
This can be done by placing washers between the enclosure and the
mounting surface.
• NEVER install the switch where any corrosive substance might drip
onto the enclosure.
• Protect the switch at all times against excessive moisture, dust, dirt,
lint, construction grit and corrosive vapors.
A typical automatic transfer switch installation is depicted on next page. It
is best if the transfer switch is mounted near the utility meter, either inside
or outside. Discuss layout suggestions/ changes with the owner before
beginning the system installation process.
Transfer switch is fitted with two knockouts. Each knockout is capable of
accepting either 50.8mm or 63.5mm diameter fitting. Other cutouts can be
made, but must be compliant with local ordinance, and use proper fitting,
mounting, and gland.
NOTICE Before drilling conduit entry holes, or any other holes, cover and
protect the switch and electronics to prevent dirt and metal fragments from
entering the mechanical and electrical components. Failure to do so may
result in damage or malfunction of the switch.
NOTICE Use a vacuum to clean any dirt or metal shavings inside the
transfer switch. Do not use a blower or compressed air to clean the inside
of the transfer switch because debris may become lodged in the electrical
and mechanical components causing damage or malfunction.
.
Service Disconnect
Transfer
Switch
Conditioner
Watt -
Hourmeter
Main
Distribution
Panel
Transfer
Switch
Air
Conditioner
Watt -
Hourmeter
Generator
Air
Disconnect Switch
NOTE This transfer switch
requires the installation of a
utility service disconnect.
Generator
BRIGGSandSTRATTON.COM
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