I have replaced a light switch in the hall without making a note of which wire goes where. I have wired it the same as the unreplaced one, but it trips when I switch the light on. There are 2 black wires and 1 red. Each switch has provision for 3 wires,1 marked common, at the top, and 2 at the bottom marked one way and two way. The unreplaced switch has the red wire in the common connector, and the black ones are in the bottom ones marked one and two way. What am I doing wrong????
An expert who has achieved level 3 by getting 1000 points
An expert that got 10 achievements.
An expert that got 5 achievements.
An expert whose answer got voted for 100 times.
Re: 2 way light switches in the hall
There are too many ways to wire a 2 way switch circuit (3 way switch) to mess with, the two most common ways, will trip out the circuit if wired to each other, (one kind at each end, hope that makes sense), the most common mistake, will put 110v to the metal plate of the switch and switch box, not good
a sparky will take 5 minutes to determine which wiring pattern is used, and install the switch
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
--------------- wire #1 ---------------------
power in --- -----power out to
--------------- wire #2 --------------------- light
the upstairs switch is improperly wired. With the breaker off, un wire the upstairs switch. Using an inductive tester with the breaker back on (use caution not to get shocked, determine which wires get power from the downstairs switch in EACH position (there is no 'off' in a three way). when you determine which two wires bring power to the upstairs switch, the remaining wire is the light.
A switch loop is a technique that is often used in home wiring to cut back on wire used and to make the circuit less complicated. In a normal switching circuit power comes into the switch box with the white wires tied together and black wires on the switch and then continues to the lighting box where black is connected to black and white is connected to white. With a switch loop the power starts at the lighting box in the black wire that does not go to the switch. That black wire is connected to the white wire that goes out to the switch (note the white wire must be taped with a small piece of electrical tape to show that it is now a powered wire). At the switch both black and white wires must be connected to the switch (the white wire here must also be taped). So now back at the light box you should have two wires. A white wire from your incoming power cable and a black wire from your switch cable. Now all you need to do is tie black to the black of your light and white to the white of your light (note: if you have terminals, white goes to the silver terminal and black goes to the brass terminal.) The wiring is done in this manner because in electrical work black and white make a light, and the the colors are never mixed up because it allows the next person to diagnose any problems much easier.
The most common way the houses are wired is through the ceiling. The power comes into the box that the light is on. The power is wired to the light on one wire and the other goes down to the switch. The return comes back from the switch and connects to the light. What the did was connect the wire that feeds the outlets to the switch.
If I understand correctly, you replaced a triple pole switch with another triple pole switch?
The key to replacing electrical devices is noting color of each screw. Hot goes to dark screw. Load wires going to each light connect to brass screws. Neutral wires do not connect to switches.
Electricians don't guess, they test. Separate wires for testing. Tape tester leads to wood sticks to keep hands away from power. Turn power ON. Test each wire to bare ground wire. Tester lights up on Hot wire. This is the wire that comes from circuit breaker. Hot wire connects to dark screw. Connect each of the other wires to brass screws, and use switch to test which wire goes to which Load.
Add a comment for more free help. Also take advantage of fixya expert assistance live. For a price, expert works with you via e-mail while you work on circuit or any do-it-yourself project. Fixya is always less expensive than a service call.
Switch-plug combo: bare ground goes to green screw dark screw goes to hot from breaker silver screw to neutral brass screw goes to load (light)
Add a comment any time You are replacing single pole light switch? Single pole switch has 3 wires: black and red and bare copper
New device has 4 different colored screws: green, dark, brass, silver Bare copper goes to green screw. Black wire goes to dark screw Red wire to brass screw Nothing on silver screw for a moment. Test circuit and make sure light turns on-off. If lights works, then good so far.
Now let look at silver screw. Neutral wire has to connect to silver screw. In back of your electrical box are white wires twisted together and covered with wire nut. These are neutral wires. You must connect another short piece of insulated wire to these neutral wires and run that wire to silver screw. The neutral wire will complete circuit to receptacle. If you do not have neutral wire, then receptacle will not work in that box without additional wiring.
Hook up neutral wire to silver screw. Now turn on power and click switch again. If circuit breaker trips, then reverse your red and black wires. Otherwise this should be correct wiring.
Hello. I can help you. Assuming that all three switches used to work and now you have this problem, you have a switch that is worn out or has a wire that has come loose.
Turn off the power to this fan and open up one switch at a time. look for a disconnected wire, or a loose wire. If the wires were pushed into the clip on the switch check carefully as these little clips often fail after a while.
I seriously think you will find a loose wire and that will solve your problem, once you reconnect it.
If that is not the case, you will have to replace one switch at a time until you have replaced the bad one.
I recommend that you make a diagram of each switch once you have it out in the open noting which color of wire goes to each screw or spot. You will always have one screw on a switch which is a slightly different color from the rest. Always note which color wire goes to the odd color screw and make sure you always hook that wire to the odd color screw in the new switch.