Input/Output Wiring Procedure

1.Mount the Input/Output Wiring Panel to the lower rear frame panel.

Note: The I/O wiring panel and the cover plate are shipped in the frame accessory package located in the upper right module bay of the frame. Remove the four mounting screws from the rear of the SymmetraTM frame, and use them to install the panel. Place the cover plate aside.

2.Attach flexible metal conduit to the wiring panel.

Note: If the pre-installed knock-outs do not fit your strain relief hardware, use existing knock-out as a pilot to create a new hole.

3.Pull the wire through the conduit. Leave enough wire extending from the conduit strain relief to reach terminal blocks.

4.Strip approximately 1/2” (13 mm) of insulation from the end of each wire.

5.Connect the ground wires to the green/yellow grounding terminal block connections.

Note: Both input and output grounds attach to the same terminal block. Make sure to wire them correctly.

6.Connect the neutral wires to terminal block connections marked “N” in blue.

Caution!

νTighten screws to ensure good electrical connection.

7.Connect remaining power wires to terminal block connections.

8.Inspect wiring for proper connections.

Note: Do not mount the wiring cover plate until the wiring verification procedure is complete.

 

Wiring

Symbol

Description

Minimum

 

Wire Size

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Output Ground

 

 

 

 

 

 

 

 

Safety Ground (Green/Yellow)

 

 

 

 

 

 

 

 

 

 

Install Second!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

Output Neutral

 

N

Output Return (Blue)

#3 AWG (25mm2)

Install Fourth!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

Output Phase

L1

Output Power

 

 

 

 

 

 

 

 

 

 

 

 

 

A

Input Ground

 

 

 

 

 

 

 

 

Primary Safety Ground (Green/Yellow)

 

Install First!

 

 

 

 

 

 

 

 

#8 AWG (10mm2) if a

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

Input Neutral

 

N

Input Return (Blue)

bypass transformer is

Install Third!

 

installed.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

Input Phase

L3

Input Power

#3 AWG (25mm2) if a

 

 

D

Input Phase

L2

Input Power

bypass transformer is

not installed.

 

 

 

 

 

 

 

 

 

 

 

 

E

Input Phase

L1

Input Power

 

 

 

 

 

 

 

 

 

 

 

 

 

990-7166-001

Electrical Installation - Page 5

 

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Image 29
American Power Conversion SYMSTRF3I user manual Input/Output Wiring Procedure, Minimum, Wire Size