Style Name:15Amp 3-Wires This attachable safety GFCI Plug earth leakage protection device is widely used to replace the general PLUG of your power tools and home appliances, such as pressure washer, hair blower, hairdryer, vacuum cleaner, air conditioner, bathroom heater, aqaurium, pool pump and all the Christmas cords that plug into each other. It will trip off when it detect current loss, to protect people from electric shock. How to use?(1) Cut off the original electrical plug and wired up this GFCI plug.(2) Place the Hot wire under the Brass-colored screw. Place the Ground wire under the green-colored screw. Place the Neutral wire under the silver-colored screw. (3) Install the strain-relief clamp (the u-shaped piece of metal) over the outer cable exterior to help prevent a pulling force from pulling the wires out from the screws that are supplying the electricity(4) Test it and make sure the red indicator light is ON before using. How to test? (1) Power on (2) Press RESET button, red indicator light ON (3) Press TEST button, red indicator light OFF (4) Done! Specifications Name: Replacement GFCI Plug 3-Prongs Rated Voltage: 125VAC, 60Hz Rated Current: 15Amp Residual Current: 5mA Tripping Time: ≤0.1ms Voltage Withstand: 2000V Endurance Test Time: 6000 Limited Current: 250A Color: Black Certificate: ETL