56 electrical systems troubleshooting
Testing line voltage. The SureTest shows 119 V at the out-
let. Any reading within ±10% of nominal voltage (120 V)
is acceptable.
Testing neutral-to-ground leakage (voltage). The SureTest
shows 0.9 V, which is acceptable.
Testing peak voltage value. The SureTest shows 168.5 V,
which is normal.
Measuring voltage drop with a 15 amp load. The
SureTest shows 15.5%, which is too high; it should be 5%
or less. High readings like this can indicate poor-quality
terminations in the system or undersized wiring.
Testing frequency in Hz. The SureTest shows 60 Hz, which is
the expected result; ±5% is the maximum accepted tolerance.
Checking voltage drop with a 20 amp load. The SureTest
shows 20.7%, which again is too high.
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