Eaton Electrical Cutler Hammer MN05001002E - Manual (Page 20)

Intelligent Technologies QCPort System Install Manual
November 2005
MN05001002E For more information visit www.eatonelectrical.com Page 20
1 Power Supply
Locate the power supply at the end, middle, or anywhere along the cable, as illustrated in
the following figure.
Figure 12: 1 Power Supply
Grounding the Interconnect System
You must ground the QCPort system at only one location.
Warning
If you use more than one power supply, all of them should be attached to the same
earth ground.
Ground the G conductor at only one place at the power supply that is closest to the
physical center of the QCPort system to maximize the performance and minimize the
effect of outside noise.
To ground QCPort:
• Connect the G wire to earth ground using a 1 in (0.25 mm) copper braid or a #8
AWG wire up to 10 ft (3 m) maximum in length.
• Use the same wire to connect the power tap to earth ground.
Power
Supply
Device Device Device Biasing resistor Biasing resistor