: Prepare to Connect DC Power to a PA-220R Firewall
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Prepare to Connect DC Power to a PA-220R Firewall

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Prepare to Connect DC Power to a PA-220R Firewall

Learn how to prepare the hardware required to connect DC power to a PA-220R firewall.
Use the following information to gather and prepare the hardware that is required to Connect DC Power to a PA-220R Firewall.
Due to the various cable lengths required for a given installation site, DC power and ground cables are not included with the firewall.
Required Hardware
  • 16-22AWG cable—Use this cable for the ground cable and DC power cables.
  • 6-32 ring lug—Use this lug to connect a ground cable to the screw-on ground point on the firewall. You can, instead, choose one of the DC terminal block ground inputs.
  • Cable/wire strippers—Use this tool to strip the cable shielding off the ends of the DC power and ground cables.
  • Screwdrivers—Use these tools to attach the ground cable and DC power cables: use a Phillips-head screwdriver for the screw-on ground point and a small flat-head screwdriver to secure cables to the DC terminal block inputs.
Prepare for the Installation
  1. Read PA-220R Electrical Specifications for power requirements.
  2. Measure and cut the DC power cables and ground cable. Ensure that the DC power cables reach from the firewall to your DC power source and that the ground cable reaches from the firewall to your ground location.
    You will need one ground cable and two DC cables (one for the positive connection and one for the negative connection). To provide power redundancy for the firewall, prepare two additional DC power cables to connect the second set of DC power inputs.
  3. Prepare the ground cables using one of the following methods based on which ground location you decide to use:
    • Screw-on ground point (above the DC terminal block)—Strip 1/4-inch of cable shielding from the end of the ground cable and crimp a 6-32 ring lug onto the end of the cable.
    • DC terminal block ground input—Strip 1/4-inch of cable shielding from the end of the ground cable.
  4. Strip 1/4-inch of cable shielding from the ends of each DC power cable that you will insert into the DC terminal block.