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Electrical Installation - Page 9
990-7166-001
Bypass Balance Transformer Wiring Procedure (Optional)
1. Remove the transformer wiring panels on the Symmetra
TM
frame, and on the back of the transformer.
2. Move the jumper bar on the frame terminal block up one position. See illustration.
3. Pull the wire through the conduit. Leave enough wire extending from the conduit strain relief to reach
terminal blocks.
Note: The input wires must
not be in the same conduit as the output wires. See wiring schematic.
4. Attach flexible metal conduit to the Symmetra
TM
wiring panel and to the transformer frame . Remount the
wiring panel onto the Symmetra
TM
frame.
5. Strip approximately 1/2” (13 mm) of insulation from the end of each wire.
6. Connect the ground wire to the green/yellow grounding terminal block connection.
7. Connect the neutral wires to terminal block connections marked “N” in blue.
8. Connect remaining power wires to terminal block connections.
9. Inspect wiring to ensure proper connections.
10. Remount the wiring panels onto the
Symmetra
TM
frame and the transformer.
11. Switch the bypass circuit breaker to the on
(I) position and install the cover plate over it.
See illustration.
Note: Installing the bypass transformer option
removes the bypass circuit breaker from the
power path.
n Fasten connection screws to ensure good electrical connection.
Caution!
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