QS4500TE0001
Page 2
Effective 6/01
Step 2: Install power cables. Cables shall be sized and
installed per National Electrical Code, refer to NFPA70.
The cable must be sized within the specified cable size
range on the side of the cable connectors.
Connect cables and torque to correct value indicated on
the label near the lugs in the following order: [1] Load
Cables
*
(T1, T2, T3), [2] Normal or Utility Supply (N1,
N2, N3), [3] Emergency and Generator Supply (E1, E2,
E3). For 4 pole transfer switches, connect load cables
(T4), normal or utility supply (N4), and emergency or
generator supply (E4). Refer to Figure 2 for the location
of all parts discussed in this document.
*
Load cables on switches using the vertical design MUST be
connected and torqued BEFORE installing the SUPPLY
cables (Figures 3 and 4).
Figure 2 300A, 3 Pole, Automatic Transfer Switch Interior
Normal Power Source
Molded Case Switch
Power Panel
Transformer Panel
Load Lugs (Top Entry)
Motor Disconnect (S3)
Voltage Selection
Connectors
Engine Start Contacts
Emergency Power Source
Molded Case Switch
Transfer Mechanism
Indicator Wheel
Manual Operating
Handle
Neutral Connections
