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O & M Manual for the CHGENLC Automatic
Transfer Switch with ATC-100 Control
1
3
Control
Wiring
Figure 15. Typical Installation of a Residential ATS.
The ATS (1) and generator (2) are connected to the power supply.
The automatic transfer switch is located between the emergency
distribution (3) and the utility panel (4).
When the utility power fails, the ATS will sense the failure, the
generator will start , and when sufficient generator voltage is
available, the ATS will switch all loads to the emergency panel.
All emergency loads will receive power from the generator. A line
breaker is required between the generator power source and the
transfer switch (see Figure 16). When utility power returns, the
ATS will switch all power back to the utility panel and the genera-
tor will shut down.
Figure 16. Diagram of a Typical Installation (Critical Loads Only).
IB00405002E
Power
Cables
4
2
For more information visit: www.eaton.com
Effective: August 2007
In addition, another typical installation for loads can be considered
(see Figure 17). Refer to Figure 18 for a loads connection dia-
gram.
Figure 17. Typical Installation of a Residential ATS.
The switch (1) and generator (2) are connected to the power
supply. The ATS is located between the utility and the loads.
Figure 18. Diagram of a Typical Installation (All Loads).
4.7 Generator Start Connection
The generator start contact connections are located below the
ATC-100 Controller.
Note: Prior to making the generator start connection to the ATS, set the
generator control selector switch to the OFF position to prevent an
unwanted generator start. Control wiring, such as the generator start
wires, must be run in a separate conduit from the power cables.
A contact closes or opens between the terminals 1, 2 and 3 on J5
connector of the ATC-100 controller (see fig. 19) when a genera-
tor start signal is provided by the ATS logic. The wiring diagram
in Section 7 (see Figure 24) provides additional generator start
connection information. Use the proper wire size as listed by the
generator set (Genset) manufacturer.
Instructional Booklet
Page 13
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