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SureTest Measurements
Use the down arrow ( ↓ ) and side arrow (→ ) buttons to navigate through
the measurement menu as outlined in the menu buttons section of this man-
ual. There are four measurement menu options; line voltage, voltage drop,
ground-neutral voltage and line impedance.
Line Voltage Measurements
There are three tests within the line voltage menu.
Measurement
Line Voltage
V
RMS
V
Peak Voltage
PEAK
Frequency
H
Z
The line voltage measurement is the first measurement within this menu
selection. Pressing the side arrow button (→ ) moves the unit from mea-
surement to measurement within the line voltage menu. Pressing the down
arrow button ( ↓ ) moves the unit to the next menu selection – Voltage Drop.
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7
Troubleshooting Tips
The line voltage tests are conducted without a load. If these results are not
met, it could be a problem with the circuit, or a load on the circuit. To
determine what may be causing the problem, turn off the loads on the circuit
and re-check. If the test results do not change, than the problem may be
within the circuit. If the test results return to normal, than the problem is
being caused by one or more of the loads on the circuit.
Measurement Expected Problem
Result
Line Voltage
108-132V
High/low
line
voltage
Peak Voltage
153-185V
High/low
peak
voltage
Frequency
60Hz
High/low
frequency
8
Possible
Possible
Causes
Solutions
- Too much load
- Redistribute the
on branch circuit
load on the circuit
- High resistance
- Locate high
connection within
resistance
the circuit or at
connection/device
the panel
and repair/replace
- Supply voltage
- Consult power
too high/low
company
- Supply voltage
- Consult power
too high/low
company
- Distorted wave
- Evaluate #
form caused by
electronic devices
electronic
on circuit and
equipment on
redistribute if
the line
necessary
- Supply frequency - Consult power
too high/low
company
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