2 CT70-en-GB_V8.5 2/19
Introduction
Congratulations on your purchase of the CT70 AC Circuit Load Tester.
This device can detect circuit and wiring problems such as: Poor ground impedance, false grounds,
missing ground fault protection, low voltage availability under load, and high ground-to-neutral
voltage. In addition, the CT70 tests GFCI and EPD circuits.
Circuit and wiring issues listed above can introduce shock hazards (from grounding issues) and can
comprise performance of machinery and equipment (from poor ground impedance, lack of sufficient
voltage under load and/or high ground-to-neutral voltage). In addition, fire can result from the heat
generated by high resistance points in a circuit.
Proper wiring habits have been shown to greatly increase power quality performance.
This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable
service.
Features
True RMS measurements
Voltage drop measurements on 12A, 15A, and 20A loads for 120 V circuits
Voltage drop measurements on 5A, 8A, and 10A loads for 230 V circuits
Voltage measurements: Line, ground-to-neutral, and peak
Measures frequency of the voltage
Checks 3-wire receptacle configuration
Finds false grounds
Tests GFCI and EPD circuits
Safety
International Safety Symbols
This symbol, adjacent to another symbol or terminal, indicates the user must refer
to the manual for further information.
This symbol, adjacent to a terminal, indicates that, under normal use, hazardous
voltages may be present
Double insulation
This WARNING symbol indicates a potentially hazardous situation, which if not
avoided, could result in death or serious injury.
This CAUTION symbol indicates a potentially hazardous situation, which if not
avoided, may result damage to the product.
WARNING
CAUTION
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