Power Wiring Interconnections

INSTALLATION

All wiring must be the proper size, properly supported and protected by conduit.

Complete the following connections between the transfer switch, main distribution panel, utility power and generator (Figure 4, on next page).

WARNING

Low voltage wire cannot be installed in same conduit as power voltage wiring.

•Failure to follow above warning could cause personal injury, damage and/or malfunction of equipment.

1.Ensure utility power is turned OFF. Connect utility power supply leads to transfer switch terminals marked “UTILITY CONNECTION”.

2.Connect utility neutral to the transfer switch “NEUTRAL” terminal.

3.Connect main distribution panel power leads to transfer switch terminals marked “LOAD CONNECTION”.

4.Connect main distribution panel neutral lead to transfer switch “NEUTRAL” terminal.

5.Connect generator power supply leads from the generator’s control panel to transfer switch terminals marked “GENERATOR CONNECTION”. Each lead should pass through hole of current transformer before connection to contactor.

6.Plug in current transformer leads into “CT1” and “CT2” on control module.

7.Connect generator Neutral from the control panel to the transfer switch “NEUTRAL” terminal.

8.Connect generator “GND” from the control panel to the transfer switch “GND” terminal.

9.Connect main distribution panel “GND” to the transfer switch “GND” terminal.

NOTE: Assure grounding electrode conductor is connected and bonded per applicable federal, state and local codes, standards and regulations.

10.Connect generator utility 240 VAC terminals to transfer switch utility 240 VAC terminals.

11.Tighten all wire connections/fasteners to proper torque. See inside transfer switch enclosure for proper torque values.

Supervisory Control Wiring

1.Terminal strip on control module in transfer switch has four connections for customer use.There are two sets of “Normally Closed” contacts available.They will be activated when generator power is required.These can be used for supervisory control of large connected loads on generator. Example: air conditioner, hot water heater, etc.. Loads will be allowed to operate if there is enough generator power available.

NOTE: There are two wireways provided to keep the supervisory loads separated from each other.

2.Terminals “A-A” on control module are for air conditioner contactor control. Contacts are connected in series with the air conditioner contactor control circuit (Figure 5).

Figure 5 — Terminals “A-A”

Air Conditioner

Contactor

A	Supply

3. Terminals “B-B” on control module are for installer supplied contactor to control a large load. Example: electric hot water heater. Contacts are connected in series with the contactor control circuit (Figure 6).

Figure 6 — Terminals “B-B”

Contactor

B		Neutral
B		120 VAC
		120 VAC

4.Tighten all wire connections/fasteners to proper torque. See inside transfer switch enclosure for proper torque values.