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The Milwaukee Electric Tool 2224-20 is a digital GFCI receptacle tester designed to identify wiring faults and verify proper outlet function in residential and commercial electrical systems. The unit features an LCD screen that displays wiring condition status, voltage readings, and GFCI trip time, giving electricians a clear readout without interpreting LED code charts alone. An over-molded grip adds durability and handling comfort during repetitive testing. LED visual indicators work alongside the LCD to confirm wiring status at a glance. Licensed electricians and qualified electrical contractors are the primary users of this tool.
This tester is suited for use on standard 120-volt GFCI-protected outlets in residential, light commercial, and industrial settings. It is commonly used during rough-in inspections, pre-occupancy walkthroughs, and routine service calls to verify outlet wiring integrity. The tester detects six wiring conditions: hot ground reversed, hot neutral reversed, open hot, open neutral, open ground, and correct wiring. It also triggers the GFCI test function and confirms activation through a visual indicator light when the GFCI is functioning correctly.
Designed for use with standard 120-volt GFCI-protected receptacles in residential and commercial electrical installations.
This tool is intended for use by licensed electricians and qualified electrical professionals. No installation is required — insert the tester into the receptacle being tested and read the LCD display and LED indicators. Follow applicable NEC guidelines when evaluating wiring faults. Do not use this tester on outlets rated above the unit's specified voltage range.
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