INDOOR MANUAL TRANSFER SWITCHES
For Models 200660, 300660, 301060, 501210, 601210
INSTALLATION AND OPERATING INSTRUCTIONS
Warning: Gen/Tran transfer switches should be installed by a professional electrician familiar with electrical wiring and codes, and experienced in working with generators. Gen/Tran accepts no responsibility for accidents, damages or personal injury caused by incorrect installation. These transfer switches are intended for surface or flush mounting INDOORS only.
Caution: If using the generator and transfer switch for larger appliances, such as electric water heaters, clothes dryers, electric ranges and small air conditioners, check the labels on the appliances to be sure they do NOT exceed the rating of the generator. No appliance should have an amperage rating that exceeds the “GENERATOR MAIN” rating in the transfer switch.
Thank you for purchasing the finest manual transfer switch available today. Gen/Tran’s PowerStay® Manual Transfer Switches are designed to safely connect generators to load centers in homes and light commercial buildings (single phase only) for standby power applications. Features include:
♦Generator Main and Utility Main are mechanically interlocked preventing utility or generator power back feed
♦Full branch circuit protection with Siemens® circuit breakers
♦Dual wattmeters on models 200660, 300660, 301060, 501210 and 601210 help monitor and balance generator load, prolonging generator life
♦Pre-assembled wire harness for easy connection to the load center
♦Optional GFCI, Arc Fault or Surge Protection circuit breakers to further protect your home and electronic equipment (Available from Gen/Tran)
♦Optional dust cover to keep debris and dust out of your transfer switch (Available from Gen/Tran PN 501069)
Tools Needed for Installation:
♦¼” and 11/32 nut drivers, 2-1/8” hole saw (if flush mounting)
♦Straight blade and Phillips screwdriver
♦Electric drill
♦Wire cutter/stripper
Other Items Needed:
♦New 2-pole, 240V Breaker to mount in main load center – amperage to match utility breaker (see specifications Table I for Utility Main Breaker size – should be manufactured by same as Main load center).
♦Anchors and screws to mount switch to wall
♦PVC cement (to secure connectors onto flexible conduit)
♦Additional wire connectors if switch is “hard-wired”. See Table 2 for correct size.
♦May need Arc-fault, GFCI or Surge protection circuit breakers. If Arc-fault, GFCI or Surge protection circuit breakers are used as the branch circuit protector in the main load center, they MUST be used in the manual transfer switch. See Table 3 for compatible breakers. (Available through Gen/Tran).
♦Power Inlet Box – for “hard-wired” installations. (Available through Gen/Tran).
♦Power Cord to connect generator to switch or power inlet box. (Available through Gen/Tran).
Typical Basement Installation |
Typical Garage Installation |
Hardwired to generator using a power inlet box |
Plug-in cord connection |
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Power Inlet Box |
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Power Cord |
Manual |
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Power Cord |
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Transfer |
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Switch |
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Wiring Harness |
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Manual |
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Transfer |
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Switch |
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Load Center
Wiring Harness
Load Center
1
Planning Your Installation:
1. Determine the appliances, circuits or equipment you want to operate with generator power during a power outage, such as:
• Furnace |
• Garage Door Opener |
• Sump Pump |
• TV / Radio |
• Microwave Oven |
• Computer, Fax and Printer |
• Refrigerator |
• Water Heater |
• Lighting |
• Cordless Telephone |
• Well Pump |
• Range |
• Freezer |
• Security System |
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2.Determine the amps required for each appliance using the circuit breaker rating in the load center. No appliance should have an amperage rating that exceeds the “GENERATOR MAIN” rating in the transfer switch. The total amperage of all circuits can exceed the generator rating, but not all circuits will be able to be used concurrently.
3.Assign the circuit # in the load center and in the manual transfer switch, matching the size of the circuit breaker in the load center to the circuit breaker in the transfer switch. Once you’ve determined which circuits you want to connect and the appropriate amperage, you will be ready to begin installing the manual transfer switch.
Installation Procedure:
IMPORTANT: Please read this entire procedure before beginning installation. WARNING: For SAFETY, turn OFF the MAIN circuit breaker in the load center BEFORE starting installation. Remember, the wiring ahead of the MAIN is still HOT, even when the main circuit breaker is off.
For SurfaceInstallation – “Plug-in” Generator Connection (Models 200660, 300660, 301060, 501210):
1.Transfer switch can be installed on either the left or right side of the main load center. Transfer switch is provided with 21-1/2” of flexible conduit. The connection to the main load center, using the provided wire harness, must be made through one of the three (3) knockouts (KO’s) provided in the bottom or lower sides of the manual transfer switch. The wire harness should enter the main load center in one of the bottom or lower side knockouts.
2.Remove the cover of the main load center and the transfer switch. The conduit may be cut to a convenient length. Glue connectors on ends with PVC cement. After attaching the flexible conduit to both boxes through the KOs, hold the transfer switch away from the load center against the wall on which it is to be mounted and mark the keyholes on the wall for the anchoring screws. Be sure NOT to stress the flexible conduit, as it will break. [NOTE: The blue Electrical Non-Metallic Tubing (ENT) is UL Listed and recognized by the National Electrical Code (NEC). However, it generally cannot be used in buildings that exceed (3) floors above grade. While the NEC does allow its use for this application, local codes and inspectors may prohibit its use. If this situation exists, call 888-GEN-TRAN to request a length of flexible metal conduit (FMC) to use in its place.]
3.After mounting the transfer switch to the wall, you are ready to terminate the wires in the manual transfer switch. Fish the bundle of wires provided through the conduit. Strip each wire in the wire harness approximately 5/8” and insert and tighten the wires to the correspondingly marked circuit breakers in the transfer switch. As you attach each marked wire to the circuit breaker, write on the label on the cover of the transfer switch with the appliance on that circuit per the planning worksheet. The unmarked BLACK wires in the harness are inserted into the Utility 2-pole breaker in the transfer switch. Attach the WHITE wire to the insulated neutral bar located between the two meters inside the transfer switch, and attach the GREEN wire to the ground bar located in the lower left corner of the transfer switch. Reinstall the cover to the transfer switch.
4.RECHECK TO BE SURE THE MAIN CIRCUIT BREAKER HAS BEEN TURNED OFF. The wires from the harness entering the load center can now be terminated. Remove the wires of the appliances/loads that have been assigned to circuits in the transfer switch from the breakers in the load center. Cut the harness wires to a convenient length and strip off approximately 5/8” and connect with the provided wire connectors (see wire connector chart) using the appropriate labeled wire from the transfer switch.
The unmarked BLACK wires in the harness are to be inserted into the NEW 2 pole breaker (as required in the Other Items Needed section). Remove two adjacent single pole breakers from which the appliance/load wires were removed. The 2-pole breaker should be located in a bus bar location where two adjacent full size single pole circuit breakers were removed. Terminate the WHITE and GREEN wire in the harness in an open position in the Neutral and Ground bars respectively. If there is no separate ground bar, insert the GREEN wire into an open position in the NEUTRAL bar, and tighten.
5.Reinstall the load center cover, and turn ON the MAIN breaker. Then turn ON ALL circuit breakers in both boxes. Turn on the UTILITY MAIN in the manual transfer switch. Check that power is restored to all appliances.
For Surface Installation – “Hard-wired” Generator Connection (All Models):
1.After removing the cover from the transfer switch and before attaching the harness, remove the three screws that secure the power inlet to the top of the transfer switch. Pull the power inlet out of the transfer switch, and loosen the four screws that secure the wires in the power inlet. Discard the power inlet. Secure the provided cover over the hole where the power inlet was removed using the three screws securing the power inlet. (Model 601210 does not have a power inlet, so the cover is attached at factory.)
2.After attaching the harness and securing the transfer switch to the wall as described in STEPS 1 & 2 in the above section, the wiring to the generator can be done. This wiring should only be done through one of the four KO’s on the top or upper ends of the transfer switch. The four wires removed from the power inlet should be connected together with the appropriate wires coming from the generator using installer provided wire connectors. Notes on Model 601210: The current transformers (CTs) on this unit are “floating” and therefore, installer must pass the hot leads from the incoming generator through the hole in the CT before inserting the wire into the “GEN MAIN” breaker. There is one CT per pole. Install ground wire into unused hole in the ground bar, and install neutral wire into neutral bar. See Typical Hardwiring Diagram on Page 4.
3.The remainder of the installation, as described in STEPS 3, 4 & 5 above, can now be completed.
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