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9-2 Simplified measurement
Use this method when the auxiliary earth spike cannot be stuck. In this
method, an existing earth electrode with a low earth resistance, such as a
metal water pipe, a common earth of a commercial power supply and an
earth terminal of a building, can be used with two-pole method (E and P).
(1) Connect the test leads as Fig. 9-2 shows.
MODEL7196A to LINE (C) terminal, and MODEL7244A to EARTH (E)
terminal
(2) Wiring
Make connection as shown in the following figure.
Power
E Black
Connection using common earth
of commercial power supply
.800.561.8187
Red
Fig. 9-2
Load
re
Rx
C Red
Fig. 9-3
www.
Black
E Black
Connection using socket outlet
Fig. 9-4
- 37 -
̶ 37 ̶
.com
N
P
E
C Red
information@itm.com
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