® Owner’s Manual For Automatic Transfer Switch 100 - 200 Amp, Service Entrance / Non-Service Entrance Model Number Non-Service Entrance RXSC100A3 RXSC200A3 Service Entrance Rated with Utility Service Circuit Breaker RXSW100A3 RXSW150A3 RXSW200A3 (10000011659 - Assembly Number for RSXW200A3 When Bundled with Generator) MODEL NUMBER: _________________________ SERIAL NUMBER: _________________________ DATE PURCHASED:________________________ Register your Generac product at: WWW.REGISTER.GENERAC.
WARNING CANCER AND REPRODUCTIVE HARM www.P65Warnings.ca.gov.
Table of Contents Section 1: Safety Section 4: Operation Introduction ..........................................................1 Functional Tests and Adjustments .................. 17 Read This Manual Thoroughly ....................................1 Safety Rules .........................................................1 Electrical Hazards ................................................2 General Hazards ..................................................3 Section 2: General Information Introduction ..
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Safety Section 1: Safety 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 properly. This transfer switch is listed with ETL under the UL1008 standard. Read This Manual Thoroughly WARNING Indicates a hazardous situation which, if not avoided, could result in death or serious injury. (000002) CAUTION WARNING Consult Manual.
Safety Electrical Hazards DANGER DANGER Electrocution. High voltage is present at transfer switch and terminals. Contact with live terminals will result in death or serious injury. (000129) DANGER Equipment malfunction. Installing a dirty or damaged transfer switch will cause equipment malfunction and will result in death or serious injury. (000119) WARNING Electrocution. Water contact with a power source, if not avoided, will result in death or serious injury. (000104) DANGER Electric shock.
Safety General Hazards DANGER DANGER Electrical backfeed. Use only approved switchgear to isolate generator from the normal power source. Failure to do so will result in death, serious injury, and equipment damage. (000237) 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) WARNING Electrocution.
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General Information Section 2: General Information Introduction Thank you for purchasing a Generac transfer switch. 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 this manual carefully and comply with all instructions. This will help to prevent accidents or damage to equipment that might otherwise be caused by carelessness, incorrect application, or improper procedures.
General Information A Utility Closing Coil B Generator Closing Coil C Utility Lugs (N1 & N2) D Generator Lugs (E1 & E2) E Load Lugs (T1 & T2) Utility Service Circuit Breaker (if equipped) The utility service and generator disconnect circuit breakers for 100 amp models are: • • • • • • Type BQ, 2-pole 10,000 A/C 120/240VAC, 100A 50/60 Hertz Wire range: #1 - #8 AWG (Cu/Al) The conductor tightening torque is 50 in-lbs. (5.6 Nm).
General Information Smart A/C Module (SACM) Up to four air conditioner loads can be managed by the SACM. The SACM manages the loads by “shedding” the connected loads in the event of a drop in generator frequency (overload). Loads to be “shed” are in 4 priority levels on the module. See Figure 2-2. Priorities A/C 1-4 (A) have connections for an air conditioner. To control an air conditioner, no additional equipment is required.
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Installation Section 3: Installation Introduction to Installation This equipment has been wired and tested at the factory. Installing the switch includes the following procedures: • • • • • Mounting the enclosure. Connecting power source and load leads. Connecting the generator start and sensing circuit. Connecting any auxiliary contact (if needed). Testing functions. Mounting Mounting dimensions for the transfer switch enclosure are in this manual. Enclosures are typically wallmounted.
Installation D J A H B G F E C Figure 3-1. Open Enclosure 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) Installation and interconnection diagrams are provided in this manual. NOTE: All installations must comply with national, state and local codes.
Installation For transfer switches installed in wet locations, power cables or conduits entering above the level of uninsulated live parts shall use fittings listed for use in wet locations as required by 312.2 in the NEC. NOTE: If aluminum conductors are used, apply corrosion inhibitor to conductors. After tightening terminal lugs, carefully wipe away any excess corrosion inhibitor. N1 N2 A E1 E2 T1 T2 004398 Figure 3-2.
Installation Connecting Start Circuit Wires Control system interconnections consist of N1, N2, and T1, and leads 23, 0, and 194 (see Figure 3-3). NOTE: Generac Type TC-ER-JP power and control tray cable can be installed as permitted by the 2017 NEC. Type TC-ER-JP cable contains color-coded power and control conductors. The generator control wiring is a Class 1 signaling circuit. Reference instruction manual of specific engine generator for wiring connection details.
Installation A Thermostat 1 A B Air Conditioner 1 B C Thermostat 2 1 C 2 1 2 1 2 1 2 D E D Air Conditioner 2 E Thermostat 3 0 N2 G G Thermostat 4 N2 T1 N1 F F Air Conditioner 3 T1 N1 H Air Conditioner 4 194 0 DC GROUND 194 +12 VDC T1 (fused) Battery Charge 23 T1 23 TRANSFER ® H N1 (fused) Utility Sense ® N2 N1 T1 N2 (fused) Utility Sense J 0 DC Ground 194 + 12 VDC 23 Transfer Control 006244 J 240 VAC, 6.3A Fuses Figure 3-3.
Installation Auxiliary Contact Fault Current Label See Figure 3-4. 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. A suitable power source must be connected to the common terminal. If needed, an extra auxiliary contact can be added. See Figure 3-5.
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Operation Section 4: Operation Functional Tests and Adjustments Following transfer switch installation and interconnection, inspect the entire installation carefully. A competent, qualified electrician should inspect it. The installation should comply strictly with all applicable codes, standards, and regulations. When absolutely certain the installation is proper and correct, complete a functional test of the system. CAUTION Equipment damage.
Operation Close to Generator Source Side Generator Voltage Checks Before proceeding, verify the position of the switch by observing the position of the manual operation handle in Figure 4-1. If the handle is DOWN, the contacts are closed in the generator (standby) position. No further action is required. If the handle is UP, proceed with Step 1. 1. With the handle inserted into the movable contact carrier arm, move the handle DOWN.
Operation 5. Set the generator main circuit breaker to ON or CLOSED. 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 E1 and E2. Voltage should be greater than 230 VAC (240 VAC system); frequency should be greater than 59 Hz.
Operation 2. Verify generator MLCB (generator disconnect) is OFF (OPEN). 3. Set generator to AUTO mode at the controller. 4. Generator will start and run. Allow generator to run and warm up for a few minutes. 5. Set generator MLCB (generator disconnect) to ON (CLOSED). 6. Set utility MLCB to ON (CLOSED). The system now operates in automatic mode. 8. After another 15 seconds, verify A/C 4 is energized and Status LED A/C 4 is ON. SACM Fuse Service See Figure 4-2.
Drawings and Diagrams Section 5: Drawings and Diagrams Installation Drawing—100A SE & Non-SE/150-200A Non-SE No.
Drawings and Diagrams Installation Drawing—150/200A SE No.
Drawings and Diagrams Installation Drawing—Liquid Cooled Generator No.
Drawings and Diagrams Installation Drawing—Liquid-Cooled Generator No.
Drawings and Diagrams Installation Drawing—Air-Cooled Generator SE and Non-SE Rated ATS No.
Drawings and Diagrams Installation Drawing—Air-Cooled Generator SE and Non-SE Rated ATS No.
® Part No. 10000009569 Rev. C 06/09/2021 ©2021 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.
