Understanding how the switch is wired is the most important part. A light switch has 4 wires sometimes 2 white and 2 black wires.
4 Way Switch Wiring Diagram
Why does my light switch have 4 wires. The first time i saw a red wire on a light switch it certainly confused me. 4 wire or 5 wire thermostat wiring problem we have a 19 year old condo with an old carrier mercury thermostat. The blacks are also connected to each other with a short wire another pigtail to the brass screw on the fixture. Im moving a light switch to a different wall and have found that the cable from the switch to the light has 3 wires but i dont know why. Changing the light switch is a simple and inexpensive diy project. So i guess this switch is connected to my bathroom somehow and that is related to the 4th wire.
It could be there is or once was a three way switch in play. The whites are connected together with a short third wire. For example after reversing the wires in order to put on my bathroom light i have to put on this light. When you turn on a light switch power goes to the light through the hot black wire and then back through the neutral white wire to the ground. A third problem that might be blamed on the light switch can actually caused by the light fixture itself. When you see a red wire in a light switch box it can mean two things.
While not commonly used four way switches are sometimes found in long hallways and in very large rooms that have more than two entrances. You might notice this type of issue if the light bulb flickers while turned on. 4 wire or 5 wire thermostat wiring problem we have a 19 year old condo with an old carrier mercury thermostat. Which is called a pigtail connecting to the silver screw on the pull chain fixture. The 2 wire source feeds to an adjacent switch for a differ. If i reverse the two push to release wires this switch seems to end up turning onoff a completely other switch in my bathroom.
We have both a natural gas furnace and an ac. A wire getting loose in a terminal screw or in a wire connector at the switch or light fixture could cause the flicker. The three way switch is a variation of the standard single pole switch which controls a light only from one locationa third type is the four way switch which is used in conjunction with two three way switches to control lighting from more than two locationsthis configuration may be used in open plan homes or in large kitchens or great rooms where a central bank of lighting fixtures might. I have one in my kitchen and it scared me for years. The four way switch functions as a switching device for the traveler wires between the three way switches. We have both a natural gas furnace and an ac.
This can be caused by different events. Or it could be the red wire is the wire going to the fixture and the black wires.
Gallery of Why Does My Light Switch Have 4 Wires
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