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4. Repeat the above procedure with the megohmmeter connected
between one weight and a known electrical ground (see Figure 17).
In the case of an uninstalled floor sample as in step #1, the ground
should be part of the sample panel. In the case of an installed floor
sample as in step #2, the ground should be a water pipe or known
electrical ground. Interchange the leads at the megohmmeter for
each measurement and report the average value obtained as the
value for that measurement.
5. When finished, turn off the megohmmeter and return it to the case.
Note: If the resistance changes with time during a measurement, the
value observed after about 5 seconds shall be considered to be the
measured value.
Megohmmeter Model 1000N/1100N
Table Top
36 "
- LINE
GUARD
MEGOHMMETER
Figure 16
- 33 -
Electrodes
+ EARTH
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