Briggs & Stratton Automatic Transfer Switch User Manual

Installation & Operator’s Manual

100 Amp / 200 Amp NEMA 3R Automatic Transfer Switch

with Service Disconnect

Part No. 200009GS Rev. B (03/19/2008)

Thank you for your purchase of this Briggs & Stratton Power Products Automatic Transfer Switch. This product is intended for use with Briggs & Stratton Home Standby Generator sets and therefore may not function with generators produced by other manufacturers. Seek a qualified electrical professional to determine applicability of this equipment to generators aside from those manufactured by Briggs & Stratton. This is an optional home standby system which provides an alternate source of electric power and to serve loads such as a gas furnace, refrigeration and communication systems that, when stopped during any power outage, could cause discomfort, or the like. This product does not qualify for emergency standby as defined by NFPA 70 (NEC).

This manual contains safety information to make you aware of the hazards and risks associated with transfer switches and how to avoid them. Briggs & Stratton has made every effort to provide for a safe, streamlined and cost-effective installation. Each installation is unique, it is impossible to know of and advise of all conceivable procedures and methods by which installation might be achieved. We do not know all possible hazards and/or the results of each method or procedure. Save these instructions for future reference.

This transfer switch requires installation before use. Refer to the Installation section of this manual for instructions on installation procedures. Only licensed electrical contractors should install transfer switches. Installations must strictly comply with all applicable federal, state and local codes, standards and regulations.

Where to Find Us

You never have to look far to find Briggs & Stratton support and service for your transfer switch. Consult your Yellow Pages. There are over 30,000 Briggs & Stratton authorized service dealers worldwide who provide quality service. You can also contact Briggs & Stratton Customer Service by phone at [phone], or on the Internet at BRIGGSandSTRATTON.COM.

Transfer Switch

Model Number

Revision

Serial Number

Date Purchased

Briggs & Stratton Power Products Group, LLC

900 North Parkway

Jefferson, WI 53549

Copyright © 2008 Briggs & Stratton Power Products Group, LLC. All rights reserved. No part of this material may be reproduced or transmitted in any form by any means without the express written permission of Briggs & Stratton Power Products Group, LLC.

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Table of Contents

Important Safety Instructions . . . . . . . . . . . . 4

Introduction . . . . . . . . . . . . . . . . . . 5

For the Home Owner . . . . . . . . . . . . . . . . . . . . . 5 Owner Orientation . . . . . . . . . . . . . . . . . . . . . . 5 Installer Responsibilities . . . . . . . . . . . . . . . . . . . . 5 Equipment Description . . . . . . . . . . . . . . . . . . . . 5

Installation . . . . . . . . . . . . . . . . . . 6

Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . 6 Mounting Guidelines . . . . . . . . . . . . . . . . . . . . . 6 Power Wiring Interconnections . . . . . . . . . . . . . . . . . 7 Supervisory Control Wiring . . . . . . . . . . . . . . . . . . . 8

Controls . . . . . . . . . . . . . . . . . . . 9

Operation . . . . . . . . . . . . . . . . . . . 9

Testing the Automatic Transfer Switch . . . . . . . . . . . . . . 9

Maintenance . . . . . . . . . . . . . . . . . 9

Troubleshooting . . . . . . . . . . . . . . . . 10

Transfer Switch Schematic and Wiring Diagram . . . . . . . . . . 11

Warranty . . . . . . . . . . . . . . . . . . 12 Specifications . . . . . . . . . . . . . . . . . 14

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3

Important Safety Instructions

This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.

The safety alert symbol () is used with a signal word (DANGER, CAUTION, WARNING), a pictorial and/or a safety message to alert you to hazards. DANGER indicates a hazard which, if not avoided, will result in death or serious injury. WARNING indicates a hazard which, if not avoided, could result in death or serious injury. CAUTION indicates a hazard which, if not avoided, might result in minor or moderate injury. NOTICE indicates a situation that could result in equipment damage. Follow safety messages to avoid or reduce the risk of injury or death.

The manufacturer cannot possibly anticipate every possible circumstance that might involve a hazard. The warnings in this manual, and the tags and decals affixed to the unit are, therefore, not all-inclusive. If you use a procedure, work method or operating technique that the manufacturer does not specifically recommend, you must satisfy yourself that it is safe for you and others. You must also make sure that the procedure, work method or operating technique that you choose does not render the transfer switch unsafe.

warning

Certain components in this product and related accessories contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Wash hands after handling.

warning

Only qualified electricians should attempt installation of this system, which must strictly comply with applicable codes, standards and regulations.

warning

Low voltage wire cannot be installed in same conduit as power voltage wiring.

•Failure to follow above warning could cause personal injury, damage and/or malfunction of equipment.

warning

Failure to properly ground transfer switch can result in electrocution.

•DO NOT touch bare wires or receptacles.

•DO NOT use transfer switch with worn, frayed, bare or otherwise damaged wiring.

•DO NOT handle electrical cords while standing in water, while barefoot, or while hands or feet are wet.

•If you must work around a unit while it is operating, stand on an insulated dry surface to reduce shock hazard.

•DO NOT allow unqualified persons or children to operate or service transfer switch.

•In case of an accident caused by electrical shock, immediately shut down the source of electrical power and contact local authorities. Avoid direct contact with the victim.

warning

Transfer Switch contains hazardous voltage that can cause personal injury or death.

•Despite the safe design of the transfer switch, operating this equipment imprudently, neglecting its maintenance or being careless can cause possible injury or death.

notice

Improper treatment of transfer switch can damage it and shorten its life.

•Use transfer switch only for intended uses.

•If you have questions about intended use, ask dealer or contact Briggs and Stratton Power Products.

•Do not expose transfer switch to excessive moisture, dust, dirt, or corrosive vapors.

•Remain alert at all times while working on this equipment. Never work on the equipment when you are physically or mentally fatigued.

•If connected devices overheat, turn them off and turn off their circuit breaker/fuse.

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Introduction

Your Briggs & Stratton Transfer Switch is supplied with this combined “Installation and Operator’s Manual”. This is an important document and should be retained by the owner after the installation has been completed.

Every effort has been expended to make sure that the information in this manual is both accurate and current. However, the manufacturer reserves the right to change, alter or otherwise improve the system at any time without prior notice.

For the Home Owner

To help you make informed choices and communicate effectively with your installation contractor(s),

Read and understand the Owner Orientation Section of this manual before contracting or starting your transfer switch installation.

To arrange for proper installation, contact the store at which you purchased your Briggs & Stratton Transfer Switch, your dealer, or your utility power provider.

The Transfer Switch Warranty is VOID unless the system is installed by a licensed electrical professional.

Owner Orientation

The illustrations are for typical circumstances and are meant to familiarize you with the installation options available with your transfer switch.

Local codes, appearance, and distances are the factors that must be considered when negotiating with an installation professional. As the distance from the existing electrical service increases, compensation in wiring materials must be allowed for. This is necessary to comply with local codes and overcome electrical voltage drops.

The factors mentioned above will have a direct effect on the overall price of your transfer switch installation.

NOTE: Your installer must check local codes AND obtain permits before installing the system.

•Read and follow the instructions given in this manual.

•Follow a regular schedule in caring for and using your transfer switch, as specified in the manual.

Installer Responsibilities

•Read and observe the safety rules.

•Read and follow the instructions given in this manual.

•Check federal, state and local codes and authority having jurisdiction, for questions on installation.

•Ensure generator is not overloaded with selected loads.

If you need more information about the transfer switch, call [phone], between 8:00 AM and 5:00 PM CT.

Equipment Description

The transfer switches are intended to transfer the entire load of normal residential installations when used with the supervisory contacts provided. The load is connected either

to utility power (normal) or home standby power (generator). The transfer switch monitors utility and generator voltages and will automatically connect to the appropriate source of power.

These switches make it easy for a licensed electrician to complete a home standby installation. The unit contains utility service disconnect circuit breaker, generator disconnect circuit breaker and automatic transfer switch in one enclosure. Service conduit and conductors can be wired directly from your meter to the transfer switch. A separate disconnect and associated wiring are not required

when installed per applicable federal, state and local codes, standards and regulations.

Major components of the transfer switch are a 2 pole utility disconnect circuit breaker, a 2 pole generator disconnect circuit breaker, a 2 pole double throw transfer switch, control circuit board, fused utility terminals and interconnecting wiring.

The transfer switch is solenoid-operated from utility or generator inputs and contains suitable mechanical and electrical interlock switches to eliminate the possibility of connecting the utility service to the generator output. It has ratings capable of switching full utility power into the residence. In addition, a manual override lever is provided for the transfer function.

The control circuit board has active circuits sensing utility and generator voltages. It creates a signal for the generator start-up, switch transfer, retransfer when utility is restored and generator cool down periods. The control board also contains red and green LED’s indicating the power sources available and two relay operated contacts that provide supervisory control of external loads.

5

Installation

Unpacking

Delivery Inspection

After removing the carton, carefully inspect the transfer switch components for any damage that may have occurred during shipment.

IMPORTANT: 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 Power Transfer Switch

•Installation and Operator’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. An alternative installation of the Automatic Power Transfer Switch is also depicted. 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.

Typical

Alternate

	Transfer	Watt -
— — — — — — Control Wiring		Hourmeter
	Switch w/
	Service and
	Generator
Contactor	Disconnect

Main

Distribution

Panel Generator

Hot

Water

Heater

Air

Conditioner

Branch Circuits

Disconnect Switch

	— — — — — — Control Wiring		Watt -
		Main	Hourmeter
	Contactor	Distribution
		Panel
			Branch Circuits
	Emergency	Transfer
	Load	Switch
Hot	Center
Water
Heater			Generator

Emergency Branch Circuits		Air
		Conditioner
	Disconnect Switch

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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. The 100 Amp transfer switch (Model 071022) is depicted below and the 200 Amp transfer switch (Model 071023) is depicted on the next page.

warning

Low voltage wire cannot be installed in same conduit as power voltage wiring.

•Failure to follow above warning could cause personal injury, damage and/or malfunction of equipment.

1.Ensure utility power is turned OFF. Connect utility Service conductors to line side of transfer switch service disconnect circuit breaker.

2.Connect utility service Neutral conductor to the transfer switch “NEUTRAL” terminal.

Model 071022	To Utility Meter

Utility

Connection

Load

Connection

Ground

Terminal

To Generator

3.Connect main breaker panel feeder conductors to transfer switch terminals marked “LOAD CONNECTION”.

4.Connect main breaker panel Neutral conductor to transfer switch “NEUTRAL” terminal.

5.Connect main breaker panel Ground conductor to the transfer switch “GND” terminal.

NOTE: Assure grounding electrode conductor is connected and bonded per applicable federal, state and local codes, standards and regulations.

6.Connect generator feeder conductors from the generator control panel to line side of transfer switch “GENERATOR” breaker.

7.Connect Neutral conductor from the generator control panel to the transfer switch “NEUTRAL” terminal.

8.Connect generator Ground conductor from the control panel to the transfer switch “GND” terminal.

NOTE: Assure generator equipment grounding conductor is connected per applicable federal, state and local codes, standards and regulations.

Generator

Connection

Supervisory

Contacts

Neutral

Terminal

	Main Distribution Panel
Neutral
Bus	Main

Ground Bus

7

Model 071023	To Utility Meter

Utility

Connection

Load

Connection

Ground

Terminal

To Generator

9.Connect generator “UTILITY 240 VAC” terminals to transfer switch “UTILITY 240 VAC” terminals. Use minimum #14 AWG conductors.

10.Tighten all wire connections/fasteners to proper torque. See inside transfer switch enclosure for proper torque values.

Supervisory Control Wiring

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 opened

when generator power is required. These can be used to lock out large loads when powered by generator. Example: air conditioner, hot water heater, etc..

Generator

Connection

Supervisory

Contacts

Neutral

Terminal

	Main Distribution Panel
Neutral
Bus	Main

Ground Bus

	A	Air Conditioner Contactor
		24 VAC
	A
		Contactor
	B
		Neutral
	B
		120 VAC

1.Terminals on control module are for installer supplied contactors to lock out large loads. Example: air conditioner, electric hot water heater, etc.. Contacts are connected in series with the contactor control circuit.

2.Tighten all wire connections/fasteners to proper torque. See inside transfer switch enclosure for proper torque values.

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Controls

Other than a Manual Override lever, there are no operator controls because this is an automatic transfer switch. The manual override is to be used only by licensed professionals.

Operation

To select automatic transfer operation, do the following:

1.Set utility service disconnect circuit breaker in transfer switch to “On” position.

2.Set generator disconnect circuit breaker in transfer switch to “On” position.

3.Set generator’s main circuit breaker to its “On” position.

4.Install 15 Amp fuse in control panel on generator.

5A. If generator is equipped with a system ON/OFF switch, set switch to “ON” position.

B.If generator is equipped with a AUTO/OFF switch, set switch to “AUTO” position.

The system will now be in automatic operation mode.

Testing the Automatic Transfer Switch

Turn the utility disconnect circuit breaker in the transfer switch, to the “Off” position. The automatic sequence will follow. To go back to utility power, turn the utility disconnect circuit breaker to the “On” position.

Utility Fail

The Home Standby Generator system senses when utility voltage is below 70 percent of nominal. Engine start sequence is initiated after 6 second time delay.

Engine Warm-Up

Time delay to allow for engine warm-up before transfer is fixed at 20 seconds or 50 seconds with movement of jumper on control board.

Transfer

Transfer from utility to generator supply occurs after generator voltage is above set levels. Minimum engine run time is 5 minutes after transfer.

Utility Pickup

Voltage pickup level is 80 percent of nominal voltage.

Retransfer

Retransfer from generator to utility supply is approximately 10 seconds after utility voltage supply is above pickup level and minimum run time is completed.

Engine Cool Down

Engine will run for 60 seconds after retransfer.

Maintenance

The transfer switch is designed to be maintenance free under normal usage. However, inspection and maintenance checks should be made on a regular basis. Maintenance will consist mainly of keeping the transfer switch clean.

Visual inspections should be done at least once a month. Access to transfer switch must not be obstructed. Keep

3 feet (92 cm) clearance around transfer switch. Check for an accumulation of dirt, moisture and/or corrosion on and around the enclosure, loose parts/hardware, cracks and/or discoloration to insulation, and damaged or discolored components.

Exercise the transfer switch at least once every three months as described in the previous section Testing the Automatic Transfer Switch unless a power outage occurs and Home Generator System has gone through automatic sequence. Allow generator to run for at least 30 minutes.

Contact a licensed electrical professional to inspect and clean the inside of your transfer switch at least once a year.

9

Troubleshooting

	Problem		Cause		Correction
	Automatic transfer switch does not	1.	Generator breaker open.	1.	Reset generator circuit breaker.
		2.	Generator voltage not acceptable.	2.	Refer to generator manual.
	transfer to generator	3.	Generator disconnect circuit breaker	3.	Reset generator disconnect circuit
			open.		breaker.
	Automatic transfer switch does not	1.	Utility disconnect circuit breaker	1.	Reset utility disconnect circuit
			open.		breaker.
	transfer to utility	2.	Utility voltage not acceptable.	2.	Wait for utility voltage to return to
					normal.
	Generator is still running after switch	Engine cool down period.		Engine should stop after 1 minute.
	transfers to utility power
	Generator or supervised loads (air	1.	NC contacts not operating correctly.	1.	Check NC contacts for proper
	conditioner, etc.) are operating				operation and/or check control
	improperly when generator is supplying				wiring to external load.
	power	2.	Too much load on generator.	2.	Decrease load to generator.
	Generator is still running after utility	1.	Minimum engine run time has not	1.	Wait five minutes for transfer switch
			elapsed.		to retransfer to utility power.
	power is restored	2.	Fuse(s) in transfer switch is	2.	Check fuse(s) and replace if
			defective.		necessary

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Transfer Switch Schematic and Wiring Diagram

11

BRIGGS & STRATTON POWER PRODUCTS GROUP, LLC TRANSFER SWITCH OWNER WARRANTY POLICY

Effective November 1, 2005 replaces all undated Warranties and all Warranties dated before November 1, 2005

LIMITED WARRANTY

Briggs & Stratton Power Products Group, LLC will repair or replace, free of charge, any part(s) of the equipment that is defective in material or workmanship or both. Transportation charges on product submitted for repair or replacement under this warranty must be borne by purchaser. This warranty is effective for the time periods and subject to the conditions stated below. For warranty service, find the nearest Authorized Service Dealer in our dealer locator map at BRIGGSandSTRATTON.com.

THERE IS NO OTHER EXPRESS WARRANTY. IMPLIED WARRANTIES, INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED TO ONE YEAR FROM PURCHASE, OR TO THE EXTENT PERMITTED BY LAW. ANY AND ALL IMPLIED WARRANTIES ARE EXCLUDED. LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES ARE EXCLUDED TO THE EXTENT EXCLUSION IS PERMITTED BY LAW. Some states or countries do not allow limitations on how long an implied warranty lasts, and some states or countries do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation and exclusion may not apply to you. This warranty gives you specific legal rights and you may also have other rights which vary from state to state or country to country.

WARRANTY PERIOD

Consumer Use	3 years
Commercial Use	None

The warranty period begins on the date of purchase by the first retail consumer or commercial end user, and continues for the period of time stated in the table above. “Consumer use” means personal residential household use by a retail consumer. “Commercial use” means all other uses, including use for commercial, income producing or rental purposes. Once equipment has experienced commercial use, it shall thereafter be considered as commercial use for purposes of this warranty. Equipment used for prime power in place of utility are not applicable to this warranty.

NO WARRANTY REGISTRATION IS NECESSARY TO OBTAIN WARRANTY ON BRIGGS & STRATTON PRODUCTS. SAVE YOUR PROOF OF PURCHASE RECEIPT. IF YOU DO NOT PROVIDE PROOF OF THE INITIAL PURCHASE DATE AT THE TIME WARRANTY SERVICE IS REQUESTED, THE MANUFACTURING DATE OF THE PRODUCT WILL BE USED TO DETERMINE THE WARRANTY PERIOD.

ABOUT YOUR WARRANTY

We welcome warranty repair and apologize to you for being inconvenienced. Any Authorized Service Dealer may perform warranty repairs. Most warranty repairs are handled routinely, but sometimes requests for warranty service may not be appropriate. For example, warranty service would not apply if equipment damage occurred because of misuse, lack of routine maintenance, shipping, handling, warehousing or improper installation. Similarly, the warranty is void if the manufacturing date or the serial number on the equipment has been removed or the equipment has been altered or modified. During the warranty period, the Authorized Service Dealer, at its option, will repair or replace any part that, upon examination, is found to be defective under normal use and service. This warranty will not cover the following repairs and equipment:

•Normal Wear: Outdoor Power Equipment, like all mechanical devices, needs periodic parts and service to perform well. This warranty does not cover repair when normal use has exhausted the life of a part or the equipment.

•Installation and Maintenance: This warranty does not apply to equipment or parts that have been subjected to improper or unauthorized installation

or alteration and modification, misuse, negligence, accident, overloading, improper maintenance, repair or storage so as, in our judgment, to adversely affect its performance and reliability. This warranty also does not cover normal maintenance such as adjustments, cleaning and fuse replacement.

• Other Exclusions: This warranty excludes wear items or damage or malfunctions resulting from accidents, abuse, modifications, alterations, or improper servicing. Accessory parts are excluded from the product warranty. This warranty excludes failures due to acts of God and other force majeure events beyond the manufacturers control. Also excluded is used, reconditioned, and demonstration equipment. 198180E, Rev. C, 12/31/2006

BRIGGS & STRATTON POWER PRODUCTS GROUP, LLC

JEFFERSON, WI, USA

12	BRIGGSandSTRATTON.COM