Owner’s Manual For Automatic Transfer Switch 200 Amp, Single Phase, 240 VAC, Service Rated, 20–40 Circuit Load Center With Pass-Through Lugs Model Number RXGW20SHA3 003722 SERIAL NUMBER: _________________________ DATE PURCHASED:________________________ WWW.GENERAC.COM 888-436-3722 Para español , visita: http://www.generac.com/service-support/product-support-lookup Pour le français, visiter : http://www.generac.
WARNING CANCER AND REPRODUCTIVE HARM www.P65Warnings.ca.gov.
Table of Contents Section 1: Safety Rules & General Information Section 4: Drawings and Diagrams Installation Drawing .......................................... 15 Introduction ..........................................................1 No. 10000047450 ......................................................15 Read This Manual Thoroughly ....................................1 Interconnection Drawing .................................. 16 Safety Rules .......................................................
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Safety Rules & General Information Section 1: Safety Rules & General Information Introduction Thank you for purchasing a Generac Power Systems Inc. product. This unit has been designed to provide high performance, efficient operation, and years of use when maintained correctly. The information in this manual is accurate based on products produced at the time of publication. The manufacturer reserves the right to make technical updates, corrections, and product revisions at any time without notice.
Safety Rules & General Information Electrical Hazards DANGER Automatic start-up. Disconnect utility power and render unit inoperable before working on unit. Failure to do so will result in death or serious injury. (000191) DANGER Electrocution. In the event of electrical accident, immediately shut power OFF. Use non-conductive implements to free victim from live conductor. Apply first aid and get medical help. Failure to do so will result in death or serious injury. (000145) DANGER Electrocution.
Safety Rules & General Information DANGER Equipment malfunction. Installing a dirty or damaged transfer switch will cause equipment malfunction and will result in death or serious injury. (000119) WARNING Electric shock. Only a trained and licensed electrician should perform wiring and connections to unit. Failure to follow proper installation requirements could result in death, serious injury, and equipment or property damage. (000155a) CAUTION Equipment damage.
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Installation Section 2: Installation Introduction to Installation Install transfer switch as close as possible to electrical loads that will be connected to it. Mount transfer switch vertically to a rigid supporting structure. Level all mounting points to prevent transfer switch distortion. Use washers behind mounting holes to level the unit if necessary. This equipment has been wired and tested at the factory. Installing the transfer switch includes the following procedures: • Mounting the enclosure.
Installation Installing Breakers See Figure 2-2. Insert tab on each breaker (A) into the hook on the bus (B). Push breaker into bus until it snaps into place. Connecting Power Source and Generator Power Supply DANGER Electrocution. Turn utility and emergency power supplies to OFF before connecting power source and load lines. Failure to do so will result in death or serious injury. (000116) B A CAUTION Equipment damage. Verify all conductors are tightened to the factory specified torque value.
Installation N1 N2 E1 E2 T1 All power cables can enter enclosure through provided knockouts. Additional knockouts into transfer switch can be made in the field as needed. Conduit entry shall maintain correct wire bending spaces required by Tables 312.6 (A) and (B) in the NEC. Conduits should be arranged to provide separation between utility and generator supply conductors inside the enclosure. NOTE: If aluminum conductors are used, apply corrosion inhibitor to conductors.
Installation Connecting SACM See Figure 2-4. The SACM can control an air conditioner (24 VAC) directly. Control of Air Conditioner Load 1. Route thermostat cable (from furnace/thermostat to outdoor air conditioner unit) to transfer switch. 2. Connect wire to the terminal strip terminals (A/C 1) on SACM as shown in Figure 2-4. These are normally closed contacts which open upon load shed conditions. Route thermostat wire away from high voltage wires. 3.
Installation Auxiliary Contact Fault Current Identification Label CAUTION Equipment damage. Exceeding rated voltage and current will damage the auxiliary contacts. Verify that voltage and current are within specification before energizing this equipment. (000134a) See Figure 2-5. If desired, there is one normally-closed auxiliary contact (A) on the transfer switch to operate customer accessories, remote advisory lights, or remote annunciator devices.
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Operation Section 3: Operation Functional Tests and Adjustments CAUTION Equipment damage. Perform functional tests in the exact order they are presented in the manual. Failure to do so could result in equipment damage. (000121) Following transfer switch installation and interconnection, inspect entire installation carefully. A competent, qualified electrician should inspect it. The installation should strictly comply with all applicable codes, standards, and regulations.
Operation Close to Generator Source Side Before proceeding, verify position of transfer switch by observing the position of the manual operation handle in Figure 3-1. If manual operation handle is DOWN, contacts are closed in generator (standby) position. No further action is required. If manual operation handle is UP, proceed with Step 1. 1. With manual operation handle inserted into movable contact carrier arm, move manual operation handle DOWN.
Operation 5. Set generator MLCB to ON (CLOSED). Generator now powers all LOAD circuits. Verify generator operation under load as follows: • Turn on electrical loads to the full rated wattage/amperage capacity of generator. DO NOT OVERLOAD. • With maximum rated load applied, check voltage and frequency across transfer switch terminals E1 and E2. Voltage should be greater than 230 VAC (240 VAC system); frequency should be greater than 59 Hz.
Operation Shutting Generator Down To Perform Maintenance Proceed as follows to shut down generator for maintenance: Fuse Removal and Installation See Figure 3-2. A fuse removal and installation tool (A) is included in the control housing. 1. Press OFF button on controller. 10000004183 Rev. A M1704 2. Turn main utility disconnect OFF (OPEN). 3. Turn MLCB (generator disconnect) on generator to OFF (OPEN) and follow maintenance procedure(s). To turn generator back ON: 1.
Drawings and Diagrams Section 4: Drawings and Diagrams Installation Drawing No.
Drawings and Diagrams Interconnection Drawing No.
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Drawings and Diagrams No.
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® Part No. A0000023930 Rev B 06/27/19 ©2019 Generac Power Systems, Inc. All rights reserved. Specifications are subject to change without notice. No reproduction allowed in any form without prior written consent from Generac Power Systems, Inc. Generac Power Systems, Inc. S45 W29290 Hwy. 59 Waukesha, WI 53189 1-888-GENERAC (1-888-436-3722) www.generac.
