Chapter 3: Installing the FT-50
3-29
Example C: Poly-Phase/Single-Phase From the same System
1. Neutral must be grounded at the main power panel.
2. Connect the FT-50 ground stud to the plant Earth ground. Do
not connect the FT-50 neutral (white) to the ground stud.
3. The FT-50 hot wire (black) can be connected to any of the three
legs (phases).
4. In this system the leg to leg (Ø1 to Ø2, Ø2 to Ø3, and Ø1 to Ø3)
voltage is 208 VAC. Any leg to neutral is 120 VAC (Europe
380/220).
Figure 3-26. Main power wiring Example C.
115/230
VAC
6
1
5
2
3
4
PE
N
Ø1
Ø2
Ø3
No. Description
1 Plant Power Panel
2 FT-50 Power Junction Box
3 Set Voltage Select Switch
to proper Voltage
4 Connect FT-50 pigtail leads
to input power wires
5 FT-50 Ground Stud
6 External Breaker or Disconnect
Industrial Dynamics Company, Ltd. Document 40255-0600
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