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Installing the Control Unit
Step 5: Providing the Proper Grounding
As discussed earlier under “Power and Grounding,” the power supply on
each carrier (basic and expansion) must be grounded.
WARNING:
Grounding circuit continuity is vital for safe operation. There is a risk
of electric shock if the system is not properly grounded.
Follow these steps to properly ground the control unit power supplies (see
Figures 2-1 and 2-3):
a. Attach a #12 AWG or #14 AWG solid copper ground wire to the
grounding screw on each power supply.
b. Connect the other end of each ground wire to the terminals of the
single-point ground bar on the AC outlet box.
2-52
Installing the Processor