Installation Guide

Automatic Transfer Switch (ATS) Installation
• Before beginning any installation, make sure power is
shut OFF to the main distribution panel and carefully read
the ATS Owner’s Manual that came with the system.
• All wiring must be the correct size and type, and must
conform to all codes, standards and regulations. Refer to the
Transfer Switch Owner’s Manual and the National Electrical
Code for additional information
• The distribution load center switch in the ATS must be
mounted close enough to the main distribution panel to
accommodate electrical conduit and the included 12 ft. EZ
connection wiring harness from ATS to standby unit. Make
sure no water or corrosive substances can drip onto the
transfer switch enclosure. Additional longer wiring harness
lengths (20, 50 and 80 feet) are available from your dealer.
• Always inspect the switch for shipping damage. Never install
a transfer switch that shows any sign of damage. Protect
against impact and mount the switch vertically to a rigid
support structure. Make sure the switch is level and plumb.
• The automatic transfer switch is an open transition switch.
Open transition switches prevent electrical feedback between
the generator and the utility by only allowing load circuits to
be connected to one power supply at a time.
• When three-conductor wiring is used, two 120 volt circuits
will often share the same neutral wire. To avoid overloading the neutral, either move BOTH of the circuits
that share the neutral or don’t move either of them.
• When moving two circuits with a shared neutral, they should be connected to adjacent positions (one above
the other) in the transfer switch. That will assure that the two hot wires are on separate phases and will
maintain their relationship to neutral.
• Choose a circuit to be backed up and remove the power lead from the breaker.
• Using UL Listed wire nuts, reconnect the power lead to a matching breaker in the transfer switch.
• Make sure each circuit moved is protected by the same size breaker in the transfer switch. 15 Amp circuits
must be connected to 15 Amp breakers and 20 Amp circuits to 20 Amp breakers.
• Connect large neutral to the neutral bar in the distribution panel.
• Install a 2-pole breaker in the distribution panel to protect the transfer switch. The required amp rating of
the breaker depends on which transfer switch is used. The ATS included with this unit is 200 Amps. This
breaker must be compatible with the existing electrical distribution panel.
• Install the breaker in two adjacent empty slots (one above the other) in the main panel.
• EZ connect wiring harness, from ATS to generator control panel. Locate control panel wiring harness prewired
inside ATS. The 12 foot long controller harness passes through the electrical access ports on the corner of
generator above gas line connection.
• EZ Pre-Wired Controller harness w/female plug is located inside the ATS.
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