GFCI saves live yours or someone who is really close to you on a daily basis. This small device trips if something is wrong in a electricla curcuit that you use or might not even touched in the past. - GFCI outlets exist to protect people from electrical shock and it is completely different from a house fuse. - If the hot wire were to accidentally touch the neutral wire for some reason, an incredible amount of current will flow through this circuit and start heating up like one of those coils in your toaster or a heatgun. If a human body became in contact with the electrical conduit,powerplug,etc.GFCI saves your life tripping of the electricicity flow to your body. Usully it is insalled near water sources or anticipatation that water might be present. Your live only once make sure it's enough. Call us to inspect or install a GFCI device in garage,kitchen or outside you property in Spring,TX. Veteran Electric Inc 4827 Treaschwig Rd Spring, TX 77373 (281) 631-9770 TECL 29665 https://sites.google.com/site/veteranelectric4tx/ Services Veteran Electric does; Install light fixtures Install outdoor lighting Install outlets or switches Relocate outlets or switches Repair outlets or switches Install electric car charger Install fan Install ground wire Repair fan Repair light fixtures Repair panel Restore power Replace or upgrade panel Electrical troubleshooting Emergency lighting Lighting upgrades Underground repair Home surge Protection