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Briggs & Stratton NEMA 3R User Manual

Page 8

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7. Connect generator power supply conductors from the

generator’s control panel to transfer switch terminals

marked “GENERATOR”. Each conductor should pass

through hole of current transformer before making

connection.

8. Connect generator Neutral from the generator control

panel to the transfer switch “NEUTRAL” terminal.

9. Connect generator Ground from the control panel to the

transfer switch “GND” terminal.

10. Plug in current transformer leads into “CT1” and “CT2”

terminals on control module.

NOTE: Assure generator equipment grounding conductor

is connected per applicable federal, state and local codes,

standards and regulations.
11. Connect generator “UTILITY 240 VAC” terminals to

transfer switch “UTILITY 240 VAC” terminals. Use

minimum #14 AWG conductors.

12. Tighten all wire connections/fasteners to proper torque.

See inside transfer switch enclosure for proper torque

values.

Supervisory Control Wiring

The supervisory control terminal strip on the control module

in the transfer switch has four connections for customer use.

There are two sets of “Normally Closed” contacts available.

They will be activated when generator power is required.

These can be used for supervisory control of large connected

loads on generator. Loads will be allowed to operate if there

is enough generator power available.
1. Terminals “A-A” on control module are rated for

24 VAC and air conditioner contactor control. Contacts

are connected in series with the air conditioner

contactor control circuit.

2. Terminals “B-B” on control module are rated for 1 Amp

125 VAC and installer supplied contactor to control a

large load. Example: electric hot water heater. Contacts

are connected in series with the contactor control

circuit.

3. Tighten all wire connections/fasteners to proper torque.

See inside transfer switch enclosure for proper torque

values.

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B

B

Contactor

Neutral

120 VAC

A

A

Air Conditioner Contactor

24 VAC