We currently have a bunch of Tripp Lite UPS that we’re preparing to deploy emergency power off capabilities to throughout our network. I have been provided Normally Closed tail circuits to connect to our UPS equipment.

This is the diagram displaying the wire order from the voltage source.

EPO Diagram

Courtesy of Tripp Lite

This is what the connection should look like with all of the components involved.

------+                                          +------
      |   5                                      |
      |-----------------_                        |
      |   4              >-----------------------|
      |-----------------¯                        |
      |   3                                      |
      |   2                                      |
      |-------X                                  +------
      |   1                                        EPO
      |-------X                                   SOURCE

I’ve been trying to come up with an graceful way of connecting these points.
How do I make this a reliable connection and look professional?
What have others done?

  • we need more info about your environment to make suggestions. What does your EPO source look like? – Ron Trunk Jan 22 '14 at 17:10
  • The wires we have dropped off in our rack are in a standard CAT 5 cable and only a single pair is used. – Ryan Foley Jan 22 '14 at 17:13
  • When you say "dropped off," are they terminated? Just hanging? Is the cable long enough to reach the UPS? Can you add a 66 or 110 block in the rack? – Ron Trunk Jan 22 '14 at 17:19
  • "Dropped Off" means it's a cable hangining in the rack, waiting for my shop to do something with it. It's certainly long enough to reach the UPS. I can add anything I want, although, I'm certainly not going to add a 66 block to each rack for 3 wires. – Ryan Foley Jan 22 '14 at 17:22

I would be tempted to make an RJ-11 pig tail, and then solder or twist the wires to the EPO cable. Heat shrink tubing over the whole thing to make it look "professional."

  • That was my original assumption. Is that the industry standard? We don't normally deal with wiring like this; all we have is ethernet and fiber, so this is a little off. – Ryan Foley Jan 22 '14 at 19:07

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