Step 9: Ground The Device - Proxim Tsunami Multipoint MP-820-BSU-100 Installation Manual

Perform the following steps to ensure proper surge protection:
1. Mount the surge protector near the outdoor device and use 10 AWG or larger wire to connect the protector's ground
lug to the appropriate mounting ground point. The outdoor device and co-located surge protector should have a
common grounding point using the shortest possible grounding cable.
2. Mount a second surge protector near the building ingress and use 10 AWG or larger wire to connect the surge
protector's ground lug to earth ground as shown in the following figure.
: Use Outdoor-rated, UV protected, shielded Cat5/Cat5e or better cable for the following:
3. Connect an RJ45 terminated cable between the indoor device and to the port on the surge protector at the building
ingress.
4. Connect a short RJ45 terminated cable between the outdoor equipment and the port on the co-located surge
protector.
5. Connect an RJ45 terminated cable between the two surge protectors on their remaining ports.
: Ensure to loop the cable before entering the premise to prevent water ingress.

Step 9: Ground the Device

To ensure proper grounding, use the grounding point situated at the bottom corner of the device and the grounding screw
provided to attach a ground wire of atleast 12 AWG stranded to the device. It is important that the following grounding
guidelines are followed to protect the device against lightning or ESD events:
1. Connect one end of the grounding cable to the device and the other end to the closest earthing system point at the
installation.
2. Cut any extra ground wire length when finished connecting it to the single point earth ground.
3. Avoid sharp bends and never loop or coil up the ground wire, always connect it straight to ground.
4. A good earth ground impedance is less than 1.0 ohm.
5. Make sure all connections are fastened securely and are tight.
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Tsunami 800 and 8000 Series - Hardware Installation Guide
800 Series - Hardware Overview and Installation
Figure 2-17 Surge Protector
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