GE ZBTSD manual Installation, Power Connections, Engine Start Control Connections

Power Connections

GE Zenith transfer switches are supplied with UL listed solderless screw type terminals as standard for the Source 1, Source 2 and Load power connections.

Table 1 lists the number and sizes of cable lugs supplied as standard for each switch amp rating.

Connect the Source 1, Source 2, and Load conductors to the clearly marked terminals on the transfer switch. Remove surface oxides from cables by cleaning with a wire brush. Verify that all connections are correct before tightening the lugs. All cable lug connections must be tightened to the proper torque values as shown in Table 2.

H

SPREADER BAR

45°

LIFTING EYES

NOTE: Do not run cables or wiring behind front-connected transfer switches.

CABINETD

Figure 1

NOTE: When lifting the switch using a spreader bar, height H must be equal to half of distance D.

Table 1

Engine Start

Control Connections

Engine-start control wires connect to control terminals beside the Entelli-Switch 250. Engine start terminals are indicated by a schematic symbol (the symbol indicates the contact state for a de-energized normal source).

Figure 2 shows the engine-start contacts.

Make all other necessary control connections to the control panel terminal blocks per the schematics supplied with the ATS.

NOTE: All control wires (18-12 AWG) must be torqued to 19 in/lbs.

Tightening Torque for Lugs

Table 2