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Subject - GFCI
ERG GFCI outdoor, mutiple location, middle of run. Only reading 100v, what could be the reason for this?
in2serenity My best guess would be a high resistance connection somewhere.
lctrc789 Go to the beginning of this run and check all connections then go through each one, somewhere you will find a loose or bad connection.
Scott Vickrey If you are using a digital multimeter.
Measure using a wiggy or a simpson and see if you truely have 100 volts. They will not measure trace induced voltages like a digital meter will.