Briggs & Stratton 50A NEMA 3R User manual

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TABLE OF CONTENTS
2
TABLE OF CONTENTS
TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SAFETY RULES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
For the Home Owner: . . . . . . . . . . . . . . . . . . . . . . . . 4
For the Installing Dealer/Contractor: . . . . . . . . . . . . . 4
Owner Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Installer Responsibilities . . . . . . . . . . . . . . . . . . . . . . . . 5
Equipment Description. . . . . . . . . . . . . . . . . . . . . . . . . 5
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Delivery Inspection . . . . . . . . . . . . . . . . . . . . . . . . 6
Shipment Contents . . . . . . . . . . . . . . . . . . . . . . . . 6
Mounting Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . 6
ESSENTIAL CIRCUIT ISOLATION . . . . . . . . . . . . . . . . . . 7
Power Wiring Interconnections. . . . . . . . . . . . . . . . . . 8
SYSTEM OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Model 071004 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Model 071005 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
When Calling The Factory . . . . . . . . . . . . . . . . . . . . . . 9
SERVICE PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Copyright © 2006 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.

IMPORTANT SAFETY INSTRUCTIONS

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. CAUTION, when

used without the alert symbol, 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.

SAVE THESE INSTRUCTIONS

• 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.

Failure to properly ground transfer switch can

result in electrocution.

WARNING

• 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.

Improper treatment of transfer switch can damage it

and shorten its life.

CAUTION

• Despite the safe design of the transfer switch, operating this

equipment imprudently, neglecting its maintenance or being

careless can cause possible injury or death.

Transfer Switch contains high voltage that can

cause personal injury or death.

WARNING

• Licensed electrician must perform installation of transfer

switch.

• Follow all applicable federal, state and local codes, standards

and regulations.

Contact with live parts can cause electric shock

or burn.

WARNING

INTRODUCTION

4

INTRODUCTION

Thank you for your purchase of this Briggs & Stratton

Manual Transfer Switch.This product is intended for use

with Briggs & Stratton Home Generator Systems ONLY.

This is for use with optional home standby systems which

provide 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).

IMPORTANT: DO NOT use with generator’s protected

by Ground Fault Circuit Interruptors.

Briggs and Stratton Power Products (BSPP) 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. For these reasons,

Only licensed electricians

should install transfer switches.

Installations must strictly comply with all

applicable federal, state and local codes,

standards and regulations.

Your BSPP 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 BSPP Transfer Switch, your

dealer, or your utility power provider.

The Transfer Switch Warranty is V

OID

unless the system is installed by a

licensed electrical professional.

For the Installing Dealer/Contractor

Check federal, state and local codes for questions on

installation.

If you need more information about the transfer switch,

call 1-800-743-4115, between 8:00 AM and 5:00 PM CT.

INTRODUCTION

5

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, standards and

regulations.

• Ensure generator is not overloaded with selected loads.

Equipment Description

These transfer switches are intended to operate

compatible electrical loads of normal residential

installations.The load is connected either to utility power

(normal) or home standby power (generator).

These manual transfer switches are equipped with two

circuit breakers (“GENERATOR SUPPLY” and “UTILITY

SUPPLY”) and a mechanical interlock.The “GENERATOR

SUPPLY” circuit breaker provides power from the

generator to the load devices wired to the manual transfer

switch.The “UTILITY SUPPLY” circuit breaker provides

utility power from the distribution panel to the load

devices wired to the manual transfer switch.

The mechanical interlock allows the circuit breakers for

either the generator power “GENERATOR SUPPLY” or the

utility power “UTILITY SUPPLY” to be turned on to

provide power to the selected house loads.These manual

transfer switches will not allow utility line power and

generator power to be connected to a load device at the

same time.

If utility line power is restored while generator power is

being used, there will be no affect on the generator or

transfer switch components.When utility power is

restored, follow the instructions in the section “System

Operation”.

INSTALLATION

6

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. Freight damaged parts are not warranted.

Shipment Contents

• Manual Power Transfer Switch

• Installation and Operator’s Manual

Mounting Guidelines

The Model 071004 Manual Transfer Switch is enclosed in a

NEMA Type 1 enclosure suitable for indoor use only.

The Model 071005 Manual Transfer Switch is enclosed in a

NEMA Type 3R enclosure suitable for indoor/outdoor use.

Guidelines for mounting the Manual Transfer Switch

include:

• Model 071005 Manual Transfer Switch must be installed

with minimum NEMA 3R hardware for conduit

connections.

• Install switch on a firm, sturdy supporting structure.

• To assure easy insertion or removal of circuit breakers,

level and plumb enclosure.This can be done by placing

washers between switch enclosure and mounting surface.

• NEVER install switch where any corrosive substance

might drip onto enclosure.

• Protect switch at all times against excessive moisture,

dust, dirt, lint, construction grit and corrosive vapors.

The typical installation of the Manual Power Transfer Switch

is depicted in Figure 1. Discuss layout suggestions/changes

with the owner before beginning the system installation

process.

Manual

Transfer Switch

Main

Distribution

Panel

Figure 1 — Typical Switch Mounting

Model 071004 shown

INSTALLATION

7

ESSENTIAL CIRCUIT

ISOLATION

Essential electrical loads are loads that will be powered by

the Home Generator System. Essential loads are grouped

together and wired into the transfer switch.

TO THE INSTALLER: Consult with Home

Generator System owner(s) to discuss their

“Selection of Essential Circuits”, described in

operator’s manual.

Ensure that the total of the selected load circuits fed by this

transfer switch are within the generator's rated capacity.

The following requirements apply to this type of isolation

system:

• The Manual Transfer Switch is installed after the main

distribution panel.

• The Manual Transfer Switch has a load rating of 50 Amps.

This is the maximum load rating of the essential loads.

All wiring must conform to national, state and local codes.

The illustration in Figure 2 depicts the Home Generator

System and assumes the utility is supplying 120/240 Volt,

single-phase electrical service.

Figure 2 — Typical System Diagram with Essential Circuits

To Utility Power

Watt Meter

Main Distribution Panel

To Air Conditioner (240V)

To Other Circuits (120V)

To Range

To Water Heater

240V

To Briggs & Stratton

Standby Generator

120V To Microwave

120 V To Bathroom

240V To Well Pump

120V To Sump Pump

120V

To Furnace Blower

To Lights

To Refrigerator

120V To Freezer

Manual Transfer Switch

(in utility position)

Neutral

Utility Supply

Generator Supply

Equipment Ground Bus

INSTALLATION

8

Figure 3 — A Typical Installation Diagram for Transfer Switch

Main Distribution Panel

Ground Bus

Neutral

Bus

To Generator

Generator

Connection

Utility

Connection

Neutral

Bus

Power Wiring Interconnections

All wiring must be the proper size, properly supported, of

approved insulation qualities, and protected by NEC

approved conduit.

Complete the following connections between the

generator, transfer switch and main distribution panel

(Figure 3).

1. Connect utility power supply leads from two pole

breaker installed in main distribution panel to transfer

switch two pole breaker marked “UTILITY SUPPLY”.A

50 Amp circuit breaker is provided. Ensure breaker is

turned OFF.

2. Connect main distribution panel ground to transfer

switch “GND” bus.

3. Connect main distribution panel neutral lead to

transfer switch “NEUTRAL” terminal.

4. Connect generator power supply leads from

generator’s control panel to transfer switch two pole

breaker marked “GENERATOR SUPPLY”.

5. Connect generator “GND” from control panel to

transfer switch “GND” terminal.

6. Connect generator Neutral from control panel to

transfer switch “NEUTRAL” terminal.

7. Tighten all wire connections/fasteners to proper

torque.

OPERATION AND SPECIFICATIONS

9

SYSTEM OPERATION

To transfer from utility power to generator power:

1. Turn OFF main breaker labeled “UTILITY SUPPLY”.

2. Turn OFF all branch circuit breakers in transfer switch.

3. Slide mechanical interlock and turn “GENERATOR

SUPPLY” breaker to ON position.

4. Turn ON branch circuit breakers one at a time.

To transfer from generator power back to utility

power:

1. Turn OFF main breaker labeled “GENERATOR

SUPPLY”.

2. Turn OFF all branch circuit breakers in transfer switch.

3. Slide mechanical interlock and turn “UTILITY SUPPLY”

breaker to ON position.

4. Turn ON branch circuit breakers one at a time.

Specifications

UL® 1008 Listed Transfer Switch

Model 071004

Enclosure. . . . . . . . . . . . . . . . . . . NEMA 1

Maximum Load/Circuit:

from Load Center . . . . . . . . . . 50 Amps

Rated AC Voltage. . . . . . . . . . . . . 250 Volts

Poles . . . . . . . . . . . . . . . . . . . . . . 2

Fault Current Rating . . . . . . . . . . 10,000 RMS Symmetrical

Amperes

Weight . . . . . . . . . . . . . . . . . . . . . 27 lbs.

Model 071005

Enclosure. . . . . . . . . . . . . . . . . . . NEMA 3R

Maximum Load/Circuit:

from Load Center . . . . . . . . . . 50 Amps

Rated AC Voltage. . . . . . . . . . . . . 250 Volts

Poles . . . . . . . . . . . . . . . . . . . . . . 2

Fault Current Rating . . . . . . . . . . 10,000 RMS Symmetrical

Amperes

Weight . . . . . . . . . . . . . . . . . . . . . 34 lbs.

When Calling the Factory

Before contacting Briggs and Stratton Power Products

regarding service or repair of this transfer switch, obtain

the Model Number from the unit data decal located on or

inside the case.

To contact Briggs and Stratton Power Products call

1-800-743-4115, between 8:00 AM and 5:00 PM CT.

SERVICE PARTS

10

TRANSFER SWITCH SERVICE PARTS

MODEL 071004 (NEMA 1)

Part # Description

195566GS KIT, HRDWR, NEMA1, SRV

195568GS KIT, DOOR, NEMA1, SRV

198581GS MANUAL, Operator’s

MODEL 071005 (NEMA 3R)

Part # Description

195567GS KIT, HRDWR, NEMA3R, SRV

195569GS DEADFRONT, NEMA3R, SRV

195570GS DOOR, NEMA3R, SRV

198581GS MANUAL, Operator’s

BRIGGS & STRATTON POWER PRODUCTS GROUP, LLC

TRANSFER SWITCH OWNER WARRANTY POLICY

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 www.briggspowerproducts.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.

3 years

None

WARRANTY PERIOD

Consumer Use

Commercial Use

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.

BRIGGS & STRATTON POWER PRODUCTS GROUP, LLC

JEFFERSON, WI, USA

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

198180-E, Rev. 1 (11/21/05)

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