What is wrong if you installed a gfci in the bathroom according to instructions and when the test button is pushed the lamp plugged into the adjacent bedroom socket goes off?

Answer 1

The "TEST" button is there for you to check the GFCI is operating correctly. When you test the GFCI using its Test button it should trip to break the circuit. Then anything connected to that circuit will have no power. It sounds like the light in the other room is wired to the same circuit as the one you are working on, so, if the GFCI is tripped - such as when you press the Test button - no outlet in that circuit will be able to work until you reset the GFCI using its "RESET" button.

If what happens is as was just described then your GFCI is working as it was designed to do. <><><> If you are talking about a GFCI receptacle, and wired the receptacle as it shows you how to on the instruction sheet, then everything down stream from the receptacle is protected, along with the actual receptacle that you just installed. The bottom set of terminals on the receptacle that states the word "load", is where the wires leaving the receptacle box should be connected to. Incoming power to the top terminals of the receptacle outgoing power to the next receptacle to the bottom terminals. This allows the GFCI receptacle to protect every other receptacle that is connected down stream on that circuit. If you check closely to the other receptacles that are connected, you will find that they also will be off when you push the test button. ----- As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed. Before you do any work yourself,

on electrical circuits, equipment or appliances,

always use a test meter to ensure the circuit is, in fact, de-energized. IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB

SAFELY AND COMPETENTLY

REFER THIS WORK TO QUALIFIED PROFESSIONALS.