Installation manual

6 BRIGGSandSTRATTON.COM
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 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 below. 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.
Control
Wiring
A/C Themostat
Service
Disconnect
Hot
Water
Heater
Air
Conditioner
Distribution
Panel #1
Distribution
Panel #2
Transfer
Switch
Appliance
Generator
Appliance
Branch
Circuits
Branch
Circuits
200 Amp
Utility
200 Amp
Utility
400 Amp
Watt / Hourmeter
BUS
Contactor
Furnace/Air
Handler
text text
200A 200A
Dual 200 Amp
Transfer
Switch
Correct
Dual 200 Amp
Transfer
Switch
text
400A
Dual 200 Amp
Transfer
Switch
text
400A
Incorrect!Incorrect!
NOTICE: The load
outputs of the
transfer switch can
supply one 200 Amp
panel each. These
outputs MUST NOT
be combined, or
used individually to
supply a panel larger
than 200 Amps.
NOT
for
REPRODUCTION