Use 16 mm2 (6 AWG) copper grounding cable to ground the enclosure.
WARNING A long cable between units
(sensors, transmitters, power supplies, and displays) can cause a lethal lightning-induced
current surge. Always ground the enclosure to a suitable grounded location with a short,
low-resistance cable.
WARNING Make sure that the
grounding cable material is adequate for the environmental conditions of the
installation location. Always use a corrosion‑resistant cable unless otherwise
instructed.
Using a screwdriver or similar, punch through a knockout directly below the system grounding point, if not already done.
1
System grounding point
2
Enclosure grounding cable
Connect the grounding cable to the system grounding point.
Strip a 10–15 mm (0.39–0.59 in) sheath from the other end of the cable and solder it,
or use a cable ferrule.
Connect the cable to a grounded location.
With a Vaisala mast, connect the cable to the grounding connector.
With a non-Vaisala mast, connect the cable to a suitable grounded location using an applicable adapter, a cable lug, or similar.
CAUTION The grounding
connector location may vary depending on the mast. Always use the grounding
connector with a Vaisala mast.
1
System grounding point
2
Enclosure grounding cable
3
Grounding connector
4
Grounding cables
Use long enough grounding cables to avoid strain.
CAUTION Keep the curve of the down conductor smooth with a minimum radius of the bent cable 20 cm (8 in) and never over 90° angles.
