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Question:

home wiring problems?

just bought a brinks indoor motion sensor switch and having problems installing. the regular light switch has 2 black wires that was connected to one end and a red to the other. the white wires in the wall are already together. the motion sensor switch has black, blue, red wires and its ground wire. the instructions says not to use the red wire for single switch so confused on how to wire them.

Answer:

It sounds like the existing setup is a three-way - meaning that there are two switches that control the same light? If so, you need to know which of the black wires on the existing switch is the hot wire - the other two are known as travelers. Look at the existing switch again, is one of the screws a slightly different color form the other two screws? That's your hot wire. Or the red and one black are on one side of the switch and the other black is on the opposite side - the one that's on it's own side is often the hot wire. Hook the motion sensor switch's black to the hot wire, blue to a traveler, red to the other traveler.
I would ignore the current setup and do what Brinks says. You can try using the wiring and capping the wires not used, test and if it works, perfect!
The red wire is if you are using it for a 3 way application. Sounds like you are not.
There should not be a independent conductor on the change; or, are you checking this for the circuit on the panelboard? Or, do you propose you're analyzing 40 5 Volts between the ungrounded (warm) conductor and the change-leg? you ought to no longer get any modern analyzing from the change-leg whilst the change is opened. If there is modern modern, the change is undesirable. in case you have become a analyzing between the independent (the grounded conductor) and floor on the easy container, that must be the consequence of a multi-twine community, the place the independent is shared between 2 opposite circuits. The independent will carry any unbalanced load between the two circuits. because of fact of this you ought to by no potential assume the independent no longer wearing any modern circulate. attempt changing the change. purchase one that doesn't grant any lower back-stab connections, as they are additionally the source of many issues. If the priority extends previous that, my suggestion, as continuously, is to call a qualified, authorized electrician.
Hey j! Here's what you need to do: Shut off power at breaker box. Connect two blacks in box together with a wire nut. Cap red in box with a wire nut. Turn on power at breaker and carefully check which wire nut is hot. Turn breaker back off and hook hot wire(s) to black( incoming hot/line) on new switch Capped wire(s) that wasn't hot ( outgoing/load/switched leg)to blue wire on switch, Hook up ground, and cap red wire on switch. Install switch in box and turn breaker on. You are all set Mark If you have additional questions, update your question and I will check back and update my answer.

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