Installing Ground Electrode in Marsh or Salty Marsh - RME111 - RWS200 - AWS310-SITE - AWS430 - RWCC - AWS310 - FOC201

Grounding and Lightning Protection in Vaisala Outdoor Installations Technical Reference

Document code
M211786EN
Revision
B
Language
English (United States)
Product
RME111
RWS200
AWS310-SITE
AWS430
RWCC
AWS310
FOC201
Document type
User guide

Use horizontal ground electrodes, ground rods, and access wells when the soil is soft and moist. Due to the very low soil resistance, one or two ground rods are sufficient. In populated areas, use two to four ground rods to avoid high step voltages.

  • Route the horizontal ground electrodes from the grounding connector at the mast base to the access wells. You can guide the transient current to the most desirable direction.
  • Use one or two ground electrodes.
Do not make the wires run parallel any longer than absolutely necessary.
  • If you use two ground rods, place them so that the minimum spacing is two times the rod length.
  • Bury the ground rods into soil to a minimum of 3 m (10 ft) deep close to where you routed the horizontal ground electrodes.
  • Connect the horizontal ground electrodes to the ground rods above the ground using exothermic welding or bolts.
  • If you use bolted connections, install access wells around the connection points to protect the connections from moisture.
  • If you use exothermic welding in the connections, access wells are not needed.