For this job, the customer called us out because his foyer chandelier was not working. He also had a GFCI device that we installed which was tripping intermittently. I discovered that the dimmer was bad for the chandelier and I replaced it. The GFCI was wired correctly and working upon arrival. I could not get it to trip for me but I put a bead of silicone around the box and cover to prevent moisture and water from getting in the box.