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Instructional Booklet
Page 14
Effective: March 2014
1
3
Control
Wiring
Figure 15. Typical Installation of a Residential or Light
Commercial ATS.
The switch (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).
Power
Cables
4
2
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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 or Light
Commercial 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.
O & M Manual for the RLC1
Automatic Transfer Switch
IB01602016E
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