Generac 4678-1 Switch User Manual
Contents
1. GROUND LUG ASSEMBLY 3 gt ie DETAIL A A POWER TERMINAL LUG ASSEMBLY ITEM PART NO QTY DESCRIPTION 26 77033 6 LUG SOLDERESS 27 74138 2 MALE DISCONNECT ADAPTOR BENT 28 77052 2 LUG 0 25 TAB 10 SCREW 29 81238 1 HARNESS WIRE 30 63378 2 CABLE TIE HOLDER 31 28739 2 TIE WRAP 4 32 75353 1 DECAL UL COMPONENT RECOGNITION 33 A9517 1 DECAL MANUAL OPERATION 34 A2595 1 DECAL TERMINAL STRIP 35 77030 1 DECAL TRANSFER SWITCH RATING 9222 3 77032 1 DECAL TRANSFER SWITCH RATING 9227 2 36 77036 1 DECAL TEST SEQUENCE 37 83736 1 DECAL CSA NOT FOR SALE 38 95282 1 DECAL LIVE CIRCUIT WARNING 39 81221 1 DECAL NAMEPLATE UL NOT FOR SALE 40 67210A 1 DECAL GROUND 41 A9457 1 DECAL NEUTRAL NOT SHOWN INSIDE OF COVER OUTSIDE OF COVER Generac Power Systems Inc 9 Section 7 Warranty WARRANTY Generac 100 Amp Transfer Switch GENERAC POWER SYSTEMS STANDARD TWO YEAR LIMITED WARRANTY FOR GENERAC TRANSFER SWITCH SYSTEMS For a period of 2 two years from the date of sale Generac Power Systems Inc will at its option repair or replace any part s which upon examination inspection and testing by Generac Power Systems or a Generac Power Systems Authorized Warranty Service Dealer is found to be defective under normal use and service in accordance with the war ranty schedule set forth below Any equipment that the purchaser owner claims to be defective must be examined by the nearest Generac Power Systems Author2. Throughout this publication and on tags and decals affixed to the generator DANGER WARNING CAUTION and NOTE blocks are used to alert you to special instruction about a particular operation that may be hazardous if performed incorrectly or care lessly Observe them carefully Their definitions are as follows A DIE A After this heading you can read instructions that if not strictly complied with will result in personal injury or property damage WARNING A After this heading you can read instructions that if not strictly complied with may result in personal injury or property damage caution amp After this heading you can read instructions that if not strictly complied with could result in damage to equipment and or property NOTE After this heading you can read explanatory statements that require special emphasis These safety warnings cannot eliminate the hazards that they indicate Common sense and strict compli ance with the special instructions while performing the service are essential to preventing accidents Four commonly used safety symbols accompany the DANGER WARNING and CAUTION blocks The type of information each indicates follows Generac Power Systems Inc A This symbol points out important safety informa tion that if not followed could endanger personal safety and or property of you and others This symbol points out potential explosion hazard
3. Inc 1 Generac 100 Amp Transfer Switch 1 1 INTRODUCTION This manual has been prepared especially for the purpose of familiarizing personnel with the design application installation operation and servicing of the applicable equipment Read the manual careful ly and comply with all instructions This will help to prevent accidents or damage to equipment that might otherwise be caused by carelessness incorrect appli cation or improper procedures Every effort has been expended to make sure that the contents of this manual are both accurate and cur rent Generac however reserves the right to change alter or otherwise improve the product at any time without prior notice 1 2 EQUIPMENT DESCRIPTION The pre packaged transfer switch is designed to use with pre packaged standby generator control panels It is used for transferring critical electrical loads from a NORMAL utility power source Such a trans fer of loads occurs automatically when the NORMAL power source fails or is subsequently reduced and the STANDBY source voltage and frequency have reached an acceptable level The transfer switch pre vents electrical feedback between two different power sources such as the NORMAL and STANDBY sources and for that reason codes require it in all standby electric system installations Once the transfer is completed the STANDBY power source then powers electrical loads connected to the transfer switch When NORMAL source vo
4. N1 LUG Bee E1 E2 aia lt FEOO m o zy I N B OJJOJJOJJOJOJJOJJO e T1 T2 910 Ol ONONO REMOTE TEST SWITCH OPTIONAL OPEN SWITCH TO TEST SWITCH TYPE SPST ELECTRICAL RATINGS 2A 250Voc MIN CUSTOMER LOAD LOAD 1 LOAD 2 r NOTE POWER LEADS AND TRANSFER SWITCH LEADS MUST BE RUN IN TWO DIFFERENT CONDUITS 0 23 194 AC GENERATOR CONTROL PANEL 4 Generac Power Systems Inc Section 3 Post Installation Start Up Adjustments 3 1 FUNCTIONAL TESTS AND ADJUSTMENTS Following transfer switch installation and interconnec tion inspect the entire installation carefully A compe tent qualified electrician should make the inspection The installation should comply strictly with all applica ble codes standards laws and regulations All electri cal connections must be correct and in compliance with applicable codes and standards Make sure the standby generator is ready This includes checking engine oil level coolant level fuel supply batteries and other items specified in the Owner s Manual for specific generators Complete all functional tests as outlined in the Post Installation Start Up Adjustments section Do this before plac
5. This symbol points out potential fire hazard A This symbol points out potential electrical shock hazard A GENERAL HAZARDS A Any AC generator that is used for backup power if a NORMAL utility power source failure occurs must be isolated from the NORMAL utility power source by means of an approved transfer switch Failure to properly isolate the NORMAL and STANDBY power sources from each other may result in injury or death to electric utility workers due to backfeed of electrical energy Improper or unauthorized installation operation service or repair of the equipment is extremely dangerous and may result in death serious per sonal injury or damage to equipment and or per sonal property Extremely high and dangerous power voltages are present inside an installed transfer switch Any contact with high voltage terminals contacts or wires will result in extremely hazardous and pos sibly LETHAL electric shock DO NOT WORK ON THE TRANSFER SWITCH UNTIL ALL POWER VOLTAGE SUPPLIES TO THE SWITCH HAVE BEEN POSITIVELY TURNED OFF Competent qualified personnel should install operate and service this equipment Adhere strict ly to local state and national electrical and build ing codes When using this equipment comply with regulations the National Electrical Code NEC and Occupational Safety and Health Administration OSHA have established Never handle any kind of electrical device while standing in water while barefoo
6. Wiring Diagram on Page 8 3 When certain that UTILITY supply voltage is correct and compatible with transfer switch ratings turn OFF the UTILITY supply to the transfer switch 4 On the generator panel set the Auto Off Manual switch to MANUAL position The generator should crank and start 5 Let the generator stabilize and warm up at no load for at least five minutes 6 Set the generator s main circuit breaker CB1 to its ON or CLOSED position A DX A A Proceed with caution Generator output voltage is now being delivered to transfer switch termi nals Contact with live terminals results in extremely dangerous and possibly fatal electrical shock 7 With an accurate AC voltmeter and frequency meter check the no load voltage and frequency meter at transfer switch terminal lugs E1 E2 and NEUTRAL Readings should be as follows a Frequency eee ea 61 63 Hz b Terminals El and E2 242 253 volts c Terminal E1 to Neutral 121 126 volts d Terminal E2 to Neutral 121 126 volts 8 Set the generator s main circuit breaker CB1 to its OFF or OPEN position 9 To shut down the generator set its Auto Off Manual switch to its OFF position NOTE Do NOT proceed until generator AC output voltage and frequency are correct and within stated lim its If the no load voltage is correct but no load frequency is incorrect the engine governed speed probably requires adjustment
7. warranty lasts so the above limitation may not apply to you GENERAC POWER SYSTEMS ONLY LIABILITY SHALL BE THE REPAIR OR REPLACEMENT OF PART S AS STATED ABOVE IN NO EVENT SHALL GENERAC POWER SYSTEMS BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES EVEN IF SUCH DAMAGES ARE A DIRECT RESULT OF GENERAC POWER SYSTEMS INC NEGLIGENCE Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitations may not apply to you Purchaser owner agrees to make no claims against Generac Power Systems Inc based on negligence This warranty gives you specific legal rights You also may have other rights that vary from state to state GENERAC POWER SYSTEMS INC P O BOX 297 WHITEWATER WI 5319087 Part No C3908 Revision B 19 11 02 Printed in U S A
8. z o O lt T 6 T 9 E a4 UJ LJ Hoo Y pE ae oe A U Ke Ry o L lt t o 2 jx 2 fimi i 7e m el F3 O A Q m dcs e pO a Generac Power Systems Inc ITEM JS OOTAR GO DP PO PP PO PP m m m m m m m m C1 Co NP OOO LOO RO no CO Section 6 Exploded Views and Parts Lists PART NO QTY C2259 74975 42568 22473 22097 C2237 74908 63617 24940 73591 73590A 57073 66849 27628 22131 64113 77441 62684 24912 A1658 C2630 40213B A1661 36932 22152 AP AARAOLA AARA 1 gt m OONA a I DESCRIPTION ENCLOSURE COVER ENCLOSURE HHCS M6 1 0 x 20 M6 FLAT WASHER M6 LOCK WASHER SWITCH TRANSFER 100A 2 POLE 250V M5 0 8 x 10 TAPTITE RELAY 12V DC 10A 8 32 x 1 2 TAPTITE FUSE HOLDER FUSE 5A 600V LUG NEUTRAL M5 0 8 x 16 TAPTITE NUT 375 16 WASHER FLAT 375 NOM STUD WING HANDLE TRANSFER SWITCH LUG GROUND 1 4 20 x 5 8 TAPTITE LOCK WASHER 1 4 SPECIAL COVER RELAY amp TERMINAL BLOCK STANDOFF 1 3 8 NYLON POP RIVET PPHMS 10 32 x 1 4 WASHER LOCK 10 Transfer Switch Drawing No C3909 A 0 PARTS Ce LISTS a Y o CN Eo O ENCLOSURE c bu 7 DETAIL B B
9. GENERAG POWER SYSTEMS INC Owner s Manual 100 Amp V Type Transfer Switch Models 9227 2 4678 1 9 GENERAC TRANSFER SWITCH This manual should remain with the unit SAFETY RULES Important Safety Instructions equipment Also read the instructions and information on tags decals and labels that may Read the following information carefully before attempting to install operate or service this be affixed to the transfer switch Replace any decal or label that is no longer legible DANGER Connection of a generator to an electrical system normally supplied by an elec A tric utility shall be by means of a double throw switch so as to isolate the electric system from utility distribution system when the generator is operating NEC 701 Failure to iso late electric system by these means results in damage to generator and may result in injury or death to utility workers due to backfeed of electrical energy Generac cannot possibly anticipate every possible cir cumstance that might involve a hazard The warn ings in this manual and on tags and decals affixed to the unit are therefore not all inclusive If you use a procedure work method or operating tech nique Generac does not specifically recommend you must satisfy yourself that it is safe for you and others You also must make sure the procedure work method or operating technique that you choose does not render the transfer switch unsafe
10. If no load frequen cy is correct but voltage is not the voltage regu lator may require adjustment 6 Generac Power Systems Inc Section 3 Post Installation Start Up Adjustments 2 4 GENERATOR TESTS UNDER LOAD Set the generator s main circuit breaker to its OFF or OPEN position 2 Turn OFF utility power to the transfer switch 3 Manually move the transfer switch main contacts to their STANDBY position 4 To start the generator set the Auto Off Manual switch to MANUAL When engine starts let it stabi lize for a few minutes 5 Turn the generator s main circuit breaker to its ON or CLOSED position The generator now powers all LOAD circuits Check generator operation under load as follows Turn ON electrical loads to the full rated wattage amperage capacity of the generator DO NOT OVERLOAD With maximum rated load applied check voltage and frequency across transfer switch terminals El and E2 Voltage should be greater than 230 volts frequency should be greater than 58 Hz Let the generator run under rated load for at least 30 minutes With the unit running listen for unusual noises vibration overheating etc that might indicate a problem 6 When checkout under load is complete set the gen erator s main circuit breaker to its OFF or OPEN position 7 Let the generator run at no load for several minutes Then shut down by setting the Auto Off Manual switch to its OFF position 8 With the manua
11. age related to rodent infestation Failures due but not limited to normal wear and tear accident misuse abuse negligence or improper installation or sizing Rm caused by any external cause or act of God such as collision fire theft freezing vandalism riot or wars lightning earthquake windstorm hail volcanic eruption water or flood tornado hurricane terrorist acts or nuclear holocaust Products that are modified or altered in a manner not authorized by Generac Power Systems in writing Any incidental consequential or indirect damages caused by defects in materials or workmanship or any delay in repair or replacement of the defective part s Failure due to misapplication or misrepresentation Telephone cellular phone facsimile internet access or other communication expenses Living or travel expenses of person s performing service except as specifically included within the terms of a specific unit warranty period Rental equipment used while warranty repairs are being performed Overtime labor Expenses related to customer instruction or troubleshooting where no manufacturing defect is found Overnight freight costs for replacement part s THIS WARRANTY IS IN PLACE OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED SPECIFICALLY GENERAC POWER SYSTEMS MAKES NO OTHER WARRANTIES AS TO THE MERCHANTABILITY OR FITNESS FOR A PARTICU LAR PURPOSE Some states do not allow limitations on how long an implied
12. he single phase NEUTRAL line is to be con nected to a Neutral Lug and is not to be switched Figure 2 2 100 Amp 2 Pole Transfer Mechanism BRIDGE RECTIFIERN_ ci NO NE li VARISTOR c Q T UTILITY CLOSING COIL E LIMIT SWITCH XA1 L o0 ooj em oo oo MANUAL TRANSFER LEVER L yee eel oo oo LIMIT SWITCH XBL HN C M OO STANDBY H aan ee 5 VARISTOR ONO BRIDGE _ I T RECTIFIER di HOA v NEUTRAL Solderless screw type terminal lugs are standard Conductor sizes must be adequate to handle the maxi mum current to which they will be subjected The installation must comply fully with all applicable codes standards and regulations INSTALLATION SLED Section 2 Installation Generac 100 Amp Transfer Switch Before connecting wiring cables to terminals remove any surface oxides from the cable ends with a wire brush If ALUMINUM conductors are used apply joint compound to conductors After tightening terminal lugs carefully wipe away any excess joint compound All power cables should enter the switch next to trans fer mechanism terminals Connect power source load conductors to clearly marked transfer mechanism terminal lugs as follows Figure 2 3 1 Connect NORMAL utility power source cables to switch termi
13. ing the transfer switch into service Functional tests of the transfer switch include these tests a Manual Operation b Voltage Checks and c Electric Operation caution A To avoid damaging the transfer switch perform A functional test in the exact order given Before proceeding with functional tests read and be sure you understand all instructions in this section Also read the instructions and information on tags and decals affixed to the transfer switch Note any options and accessories that might be installed or provided with the switch and review their operation A DG A A Do not attempt manual operation of the transfer switch until after all power voltage supplies to the switch have been turned off Failure to turn off power voltage supplies may result in danger ous and possibly fatal electrical shock 3 2 MANUAL OPERATION Instructions for V type transfer switches Test manu al operation as follows 1 Check that the generator s Auto Off Manual switch has been set to the OFF position 2 Turn Off the UTILITY power supply to the transfer switch using whatever means provided such as the UTILITY source main line circuit breaker 3 Set the generator s main circuit breaker to its Off or OPEN position 5 Generac Power Systems Inc POST C INSTALLATION START UP ADJUSTMENTS Generac 100 Amp Transfer Switch A DIG A A Failure to turn OFF all power voltage supplie
14. ized Warranty Service Dealer All transportation costs under the warranty includ ing return to the factory are to be borne and prepaid by the purchaser owner This warranty applies only to Generac Power Systems Transfer Switch applications as Generac Power Systems Inc have defined Transfer Switch application WARRANTY SCHEDULE YEAR ONE 100 one hundred percent coverage labor and parts listed ALL COMPONENTS YEAR TWO 100 one hundred percent coverage on parts listed ALL COMPONENTS PARTS ONLY A Generac Power Systems Inc Transfer Switch is highly recommended to be used in conjunction with the genset If a non Generac genset is substituted for use and directly causes damage to the Generac Transfer Switch no warranty coverage shall apply All warranty expense allowances are subject to the conditions defined in Generac Power Systems Warranty Policies and Procedures Flat Rate Manual Units that have been resold are not covered under the Generac Power Systems Warranty as this Warranty is not transferable THIS WARRANTY SHALL NOT APPLY TO THE FOLLOWING Any unit built manufactured prior to January 1 2002 Unit enclosure is only covered against rust or corrosion the first year of the warranty provision Costs of normal maintenance i e tune ups associated part s adjustments loose leaking clamps installation and start up Use of Non Generac replacement part s will void the warranty in its entirety Dam
15. l transfer handle move the switch s main contacts back to their utility position i e load connected to utility power supply The handle and operating lever of the transfer switch should be in the up position 9 Turn on the utility power supply to the transfer switch using whatever means provided such as a utility main line circuit breaker The utility power source now powers the loads 10 Set the generator s main circuit breaker to its ON or CLOSED position 11 Set the generator s Auto Off Manual switch to its AUTO position The system is now set for fully automatic operation Section 4 Notes NOTES Generac 100 Amp Transfer Switch 7 Generac Power Systems Inc Section 5 Electrical Data q ELECTRICAL _ Electrical Schematic Drawing No 81222 B DATA Y Z ooo ooo 2 S T 000 000 0005000 98 lt T 0000000 Y ooo ooo g S a lt EJ L le 5 E Ir 22 T rj i QQ o CY x El B ok P 47 LE AO ov E AL
16. ltage above an acceptable preset level has been restored voltage sensor action in the pre packaged control panel initiates re transfer back to NORMAL power source After this re transfer the controller signals to open the start circuit to the generator which shuts down the engine The controller is then armed and ready for the next drop in NORMAL source voltage NOTE Keep in mind the pre packaged transfer switch is without any kind of electronic controls It receives signals solely from the controller contained in the pre packaged control panel e Generac Power Systems Inc Section 1 General Information 1 3 TRANSFER SWITCH RATINGS DECAL Affixed to the transfer switch door is a RATINGS DECAL Use the transfer switch only within the specif ic limits shown on the RATINGS DECAL and on other decals and labels that may be affixed to the switch This prevents damage to equipment and possible injury to personnel and provides long and trouble free life for the equipment When requesting information or ordering parts for this equipment make sure to include all information from the RATINGS DECAL 1 4 TRANSFER SWITCH ENCLOSURE The standard switch enclosure is a National Electrical Manufacturer s Association NEMA 1 type NEMA 1 type enclosures primarily provide protection against contact with the enclosed equipment and against a limited amount of falling dirt 1 5 SAFE USE OF TRANSFER SWITCH Before installing operati
17. nals N1 and N2 2 Connect STANDBY source power cables to transfer switch terminals El and E2 3 Connect customer LOAD leads to switch terminals T1 and T2 Conductors must be properly supported of approved insulative qualities protected by approved conduit and of the correct wire gauge size in accordance with appli cable codes Tighten the wire into lugs to the following torque 100 Amp Switch 50 Inch Pounds Make sure to maintain proper electrical 1 2 inch clear ance between live metal parts and grounded metal Figure 2 3 Transfer Switch Interconnections Drawing No SUPPLY 2 5 CONNECTING START CIRCUIT WIRES Control system interconnections Figure 2 3 consist of UTILITY 1 and 2 LOAD 1 and 2 and leads 23 and 194 Control system interconnection leads must be run in a conduit that is separate from the AC power lead Recommended wire gauge sizes for this wiring depends on the length of the wire as recommended below 460 feet 140m 730 feet 223m 1 160 feet 354m No 14 AWG C3921 22 CY 38 NEUTRAL CONNECTION CBI UTILITY 1 UTILITY 2 TRANSFER ns SWITCH NEUTRAL
18. ng or servicing this equip ment read the SAFETY RULES inside front cover carefully Comply strictly with all SAFETY RULES to prevent accidents and or damage to the equipment Generac recommends you make a copy of the SAFE TY RULES and post them near the transfer switch Also be sure to read all instructions and information you may find on tags labels and decals affixed to the equipment Two publications that outline the safe use of transfer switches are the following National Electrical Code UL 1008 STANDARD FOR SAFETY AUTOMATIC TRANSFER SWITCHES 2 1 INTRODUCTION TO INSTALLATION This equipment has been wired and tested at the facto ry Installing the switch includes the following proce dures Mounting the enclosure Connecting power source and load leads Connecting control wiring Connecting any auxiliary contact if needed Installing connecting any options and accessories Testing functions 2 2 UNPACKING Carefully unpack the transfer switch Inspect closely for any damage that might have occurred during ship ment The purchaser must file with the carrier any claims for loss or damage incurred while in transit Check that all packing material is completely removed from the switch prior to installation Attach any lifting device to the transfer switch mounting holes or brackets only DO NOT LIFT THE SWITCH AT ANY OTHER POINT 2 3 MOUNTING Transfer switch components are generally moun
19. re working on the equipment Then place a DO NOT OPERATE tag on the transfer switch and on the generator Table of Contents TABLE OF CONTENTS Safety Rules Inside Front Cover 1 Section 1 General Information 2 l l Introduction 4er etr rer ren 2 1 2 Equipment Description esses 2 1 3 Transfer Switch Ratings Decal 2 1 4 Transfer Switch Enclosure 2 1 5 Safe Use Of Transfer Switch 2 Section 2 Installation 3 2 1 Introduction to Installation 3 2 2 Unpacking cocer O a tena cun 3 2 9 Mounling eee eren rre erster rov PAY 3 2 4 Connecting Power Source and Load Lines 3 2 4 1 2 Pole Mechanism 3 4 2 5 Connecting Start Circuit Wires 4 Section 3 Post Installation Start Up and Adjustments 5 3 1 Functional Tests amp Adjustments 5 3 2 Manual Operation eese 5 3 3 Transfer Switch Voltage Checks 6 3 4 Generator Tests Under Load 6 Section 4 Notes cerent 7 Section 5 Electrical Data 8 Section 6 Exploded Views and Parts LiStS adw 9 Section 7 Warranty Back Cover Generac Power Systems
20. s to the transfer switch before attempting manual operation results in extremely hazardous and pos sibly fatal electrical shock 4 Remove the manual transfer handle from the enclo sure 5 Place open slot of the manual transfer handle on the small tab of the transfer switch operating lever Figure 3 1 6 Pull manual transfer handle downward If handle is down LOAD is connected to STANDBY power source If handle is up LOAD is connected to UTIL ITY power 7 Move the transfer switch main contact to both posi tions several times Leave the transfer switch in the UTILITY position and connect LOAD to the UTILITY power source manual operation lever is up Figure 3 1 Transfer Switch Operation V Type A LOAD CONNECTED TO UTILITY POWER SOURCE LOAD CONNECTED TO STANDBY POWER SOURCE Y MANUAL TRANSFER HANDLE TRANSFER SWITCH OPERATING LEVER POST C INSTALLATION START UP ADJUSTMENTS Generac 100 Amp Transfer Switch 3 3 TRANSFER SWITCH VOLTAGE CHECKS 1 Turn ON the UTILITY power supply to the transfer switch with whatever means provided such as the UTILITY main line circuit breaker A Dd A Proceed with caution The transfer switch is now electrically hot Contact with live terminals results in extremely hazardous and possibly fatal electrical shock 2 With an accurate AC voltmeter check for correct voltage across terminal lugs N1 and N2 N1 to NEU TRAL and finally N2 to NEUTRAL see
21. t or while hands or feet are wet DANGEROUS ELECTRICAL SHOCK MAY RESULT Because jewelry conducts electricity wearing it may cause dangerous electrical shock Remove all jewelry such as rings watches bracelets etc before working on this equipment If you must work on this equipment while standing on metal or concrete place insulative mats over a dry wood platform Work on this equipment only while standing on such insulative mats Never work on this equipment while physically or mentally fatigued Keep the transfer switch enclosure door closed and bolted at all times Only qualified personnel should be permitted access to the switch interior In case of an accident caused by electric shock immediately shut down the source of electrical power If this is not possible attempt to free the victim from the live conductor but AVOID DIRECT CONTACT WITH THE VICTIM Use a nonconduct ing implement such as a rope or board to free the victim from the live conductor If the victim is unconscious apply first aid and get immediate medical help When an automatic transfer switch is installed for a standby generator set the generator engine may crank and start at any time without warning To avoid possible injury that might be caused by such sudden start ups the system s automatic start cir cuit must be disabled before working on or around the generator or transfer switch Always set the Auto Off Manual switch to its OFF position befo
22. ted in a standard NEMA 1 type enclosure Figure 2 1 caution amp A Handle transfer switches carefully when installing Do not drop the switch Protect the switch against impact at all times and against construction grit and metal chips Never install a transfer switch that has been damaged Figure 2 1 Mounting Dimensions for Enclosures 3 Generac Power Systems Inc INSTALLATION LED Section 2 Installation Generac 100 Amp Transfer Switch Install the transfer switch as close as possible to the electrical loads that are to be connected to it Mount the switch vertically to a rigid supporting structure To pre vent switch distortion level all mounting points If nec essary use washers behind mounting holes to level the unit 2 4 CONNECTING POWER SOURCE AND LOAD LINES A DIG A Make sure to turn OFF both the normal Utility and standby generator power supplies before trying to connect power source and load lines to the transfer switch Supply voltages are extreme ly high and dangerous Contact with such high voltage power supply lines causes extremely haz ardous possibly lethal electrical shock Wiring diagrams and electrical schematics are provided in this manual Power source and load connections are made at a transfer mechanism inside the switch enclo sure A 2 4 1 2 POLE MECHANISM This switch Figure 2 2 is used with a single phase sys tem when t
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