After you have correctly cabled the RTM for the CTP2000 Series, you must attach grounding and electrical wires before you turn the device on.
Three main tasks are involved:
![]() | Warning: Always connect the grounding wires first (before connecting the power cables) and disconnect them last when installing or servicing the device. |
Table 1 identifies the cabling requirements.
Table 1: CTP Power Supply Cables and Wires Needed
Cable/Wire | From | To |
---|---|---|
One 18-AWG ground wire | PDU ground terminal | Termination ground |
Two 18-AWG wire leads | PDU Power A –48 VDC and RTN leads | Appropriate leads on power source No.1 |
Two 18-AWG wire leads | PDU Power B –48 VDC and RTN leads | Appropriate leads on power source No.2 |
Push all device power switches to OFF to turn off the device.
The CTP2056 device has a grounding stud located in the rear of the chassis, near the power inputs.
To ground the power unit:
![]() | Note: We recommend a minimum of 18-AWG ground wire with a ring-style terminal. |
![]() | Note: When grounding the device, leave a service loop in the grounding cable to ensure that the grounding cable is the last cable to disconnect from the shelf if strain is placed on the electrical cables. |
![]() | Warning: Before you begin this procedure, be sure the power source is turned off, the device is turned off, and proper grounding wires are attached. |
To connect power cables to the device:
![]() | Warning: The wiring color code of the power cables depends on the color coding of the DC power source installed at your site. Color code standards for DC wiring do not exist. To ensure that the correct polarity is connected to the device power units, confirm the connection of the power cables to the + (positive) and – (negative) leads at the power source. |
![]() | Note: To provide redundancy, do not use the same power source for Power A and Power B leads. |