IDEAL SureTest 61-154 Manual page 6

Line Impedance Measurements
There are three tests within the line impedance menu.
Measurement
Hot conductor impedance
Neutral conductor impedance
Ground impedance
The hot conductor impedance measurement is the first measurement within
this menu selection. Pressing the side arrow button (→ ) moves the unit
from measurement to measurement within the line impedance menu.
Pressing the down arrow button ( ↓ ) returns the unit to the first menu selec-
tion – Line Voltage.
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Ω
H
Ω
N
Ω
G
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Troubleshooting Tips
Measurement Expected Problem Possible
Result Causes
Hot conductor <0.48Ω/ High - Too much load
impedance foot of 14 conductor on branch circuit
gauge wire impedance - Undersized
<0.03Ω/ wire for length of
foot of 12 run
gauge wire - High resistance
<0.01Ω/ connection within
foot of 10 the circuit or at
gauge wire the panel
Neutral <0.48Ω/ High - Too much load
conductor foot of 14 conductor on branch circuit
impedance gauge wire impedance - Undersized wire
<0.03Ω/ for length of run
foot of 12
gauge wire - High resistance
<0.01Ω/ connection within
foot of 10 the circuit or at the
gauge wire panel
Ground <1Ω to High - Too much load
impedance protect ground on branch circuit
personnel impedance - Undersized
<0.25Ω wire for length
to protect of run
equipment - High resistance
connection within
the circuit or at
the panel
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Possible
Solutions
- Redistribute the
load on the circuit
- Check code
requirements and
re-wire if necessary
- Locate high
resistance
connection/device
and repair/replace
- Redistribute the
load on the circuit
- Check code
requirements and
re-wire if necessary
- Locate high
resistance
connection/device
and repair/replace
- Redistribute the
load on the circuit
- Check code
requirements and
re-wire if necessary
- Locate high
resistance
connection/device
and repair/replace