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Chapter 4 Measurement Procedure
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NOTE
4.4 Using the Earthing Net
If auxiliary earthing rods cannot be driven into
the ground, such as on rock, gravel, or
concrete, use the earthing net available as an
option.
1. Place the grid flat on the ground, and pour a
sufficient amount of water on it to ensure good
surface contact.
2. Connect the measurement leads as shown in
the illustration, using a clip to connect the lead
directly to the grid or placing the auxiliary
earthing rod on the grid.
3. Set the range selector to the "
P, C" range,
verify that the grid has good contact, and
perform the measurement.
On surfaces such as asphalt or similar where
water will not permeate the ground,
measurement with the earthing net is not
possible.
If the earthing net is not available or if it is too
small, a metal plate or other conducting object
can be used as a substitute, provided that it is
watered sufficiently.
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