Briggs & Stratton Power Products Automatic Transfer Switch
Installation and Owner’s Manual
Mounting Guidelines
The Automatic Transfer Switch is enclosed in a NEMA Type 3R enclosure suitable for indoor/outdoor use. Guidelines for mounting the Automatic Transfer Switch include:
•Install the switch on a firm, sturdy supporting structure.
•The switch 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 switch 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 installation of the Automatic Power Transfer Switch is depicted in Figure 2. It is best if it is mounted near the utility meter, either inside or outside. Discuss layout suggestions/changes with the owner before beginning the system installation process.
CAUTION
Low voltage wire cannot be installed in same conduit as power voltage wiring.
•Failure to follow above warning could cause damage and/or malfunction of equipment.
3.Connect main distribution panel power leads to transfer switch terminals marked “LOAD CONNECTION”.
4.Connect main distribution panel neutral lead to transfer switch “NEUTRAL” terminal.
5.Connect generator power supply leads from the generator’s control panel to transfer switch terminals marked “GENERATOR CONNECTION”.
6.Connect generator Neutral from the control panel to the transfer switch “NEUTRAL” terminal.
7.Connect generator “GND” from the control panel to the transfer switch “GND” terminal.
8.Connect main distribution panel “GND” to the transfer switch “GND” terminal.
Power Wiring Interconnections
All wiring must be the proper size, properly supported and protected by conduit.
Complete the following connections between the transfer switch, main distribution panel, utility power and generator (Figure 3, on next page).
1.Ensure utility power is turned OFF. Connect utility power supply leads to transfer switch terminals marked “UTILITY CONNECTION”.
2.Connect utility neutral to the transfer switch “NEUTRAL” terminal.
Figure 2 — A Typical Transfer Switch Mounting
9.Connect generator utility 240 VAC terminals to transfer switch utility 240 VAC terminals.
10.Terminal strip on control module in 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, for example, disconnecting air conditioner, water heater, etc. or an alarm source.
11.Tighten all wire connections/fasteners to proper torque.
Main
Breaker
Panel
Service
Disconnect 
Watt-
Hourmeter
Transfer Switch
Generator
6
