GE Industrial Solutions H2007001 G11 Series - Manual (Page 30)

Infinity D Power System Installation Guide: +24V Systems H2007001
Issue 2.0, June 4, 2009 30
WARNING: Disconnect all ac branch circuits prior to making ac
connections to the system. When connecting to utility source, ensure
compliance to all local and national wiring rules.
There are only 2 options for AC wiring: Four 20A AC circuit breakers per shelf or two 40A AC
circuit breakers per shelf .If you have 4 AC circuit breaker per shelf, one for each of the rectifier
positions, start at step 1 here. If you have 2 AC circuit breakers per shelf, one AC circuit
breaker for each pair of rectifiers, skip this procedure and go to the next procedure in this
section.
Step Action
1.
Loosen the screws that secure the AC
wiring cover.
2.
Remove the AC wiring cover.
3.
Remove the conduit knockout.
4.
At the AC service panel install a 20A double pole circuit breaker for each rectifier position. Choose
the breaker size according to code for the wire type and environmental conditions for your site. Use
10 AWG wire for each rectifier.
5. Route two wires for each active rectifier position through 1 inch conduit and fitting, up to a total of
8 active wires and one ground (PE), into the AC wiring compartment.
6. Terminate the PE (ground) wire to the
chassis using a double hole lug (on 5/8 inch
centers) with a UL accepted crimp and tool.
7. Torque ground lug nuts to 65 inch·lbs or 7N·m using a 7/16 inch socket wrench.
8.
Strip 0.32 inches (8 mm) of insulation off the end of each AC wire.
9.
Examine the AC input terminal block provided in your shelf. Is the terminal block of single level
configuration similar to that shown in the figure above?
Loosen
Screws
Terminate
Ground Wire
Illustration of
wiring flow
through conduit
hole