Electrical Installation Tester
Measurements
29
2. Select any pair (red, blue, or green) of terminals for this test. You can use
test leads or the mains test cord when you measure ac voltage.
• The primary display shows the ac voltage. The Tester reads ac
voltage up to 500 V. Press to toggle the voltage reading between
L-PE, L-N, and N-PE.
• The secondary display shows mains frequency.
Note
The displayed voltages are valid only if the selected test leads
(including installation wires) are connected and not broken.
3. Press and hold for the battery level. The primary display shows
BATT. The secondary display shows the battery voltage.
Insulation Resistance Measurements
XW Warning
To prevent electric shock, measurements should only be
done on de-energized circuits.
To measure insulation resistance:
1. Turn the rotary dial to the R
ISO
position. See Table 12.
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