What surfaces will ground me? Which surfaces won't?

Conductive Surfaces Include:

  • Soil
  • Grass
  • Sand
  • Gravel
  • Rock (that is touching the earth)
  • Unsealed concrete or concrete with a water-based sealant
  • Unsealed brick or brick with a water-based sealant
  • Bodies of water (like the ocean, lakes, and streams)
  • Most living trees, especially with wet bark (test with the Conductivity Tester to verify)
  • Living plants

Note: Moist surfaces will be more conductive than dry surfaces.

Non-Conductive Surfaces Include:

  • Asphalt
  • Vinyl
  • Plastic
  • Tar or tarmac
  • Cut wood
  • Painted or chemically-sealed concrete


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