Questions tagged [low-voltage]

Electrical systems with voltages significantly lower than mains wiring. Examples include ethernet, telephone, cable tv, and alarm systems.

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334 views

Class 1 low voltage wiring in wall

I am looking for an approved method to run class 1 low voltage wiring in a wall from jbox to jbox. What kind of cable and what kind of cable clamps are approved? I have searched unsuccessfully for ...
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2answers
763 views

What is the proper way to connect 10awg wire to connectors rated for 14awg wire?

I'm installing 120v to 12v transformers for low voltage lighting. Inside the transformer are output connectors for the low voltage wire, and those output connectors are rated for 14 awg wire. I'm ...
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2answers
736 views

Can an induction range cause interference in nearby Cat6 cables?

I am buying a home that is under construction. The developer installed the vertical Cat6 Ethernet and RG6 coaxial cable runs from the basement to the attic in the wall immediately behind where the ...
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1answer
7k views

Doorbell button wiring no voltage?

I have just moved recently, and I noticed that the doorbell does not work. So I tried to troubleshoot it myself. I use a multimeter and then connect both probe to the transformer it gives 16V which ...
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1answer
361 views

Can I use normal metal electrical box for outdoor low voltage installation?

Installing a few PoE IP camera under the eave, I am trying to put a electric box to contain the network cable connection and to prevent vandalism. As I have a few normal interior metal boxes lying ...
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1answer
2k views

Doorbell Wiring Problem

I live in a very old house. Up until recently, my doorbell worked fine, but at some point in the last couple months it stopped working. At the transformer, I see ~18V, so that appears to be ok, but it ...
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1answer
598 views

Low voltage circuits inside mains conduit

I have a situation (USA) where there's no practical alternative except run some low voltage wiring in the same conduit as 120/240V power. The good news is, my situation calls for using entirely ...
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2answers
3k views

Can you identify this receptacle?

I was walking through a house during the middle of construction and came across what appears to be a recpticle attached to a pvc pipe that seems to pass a low voltage wire. Also connected to the ...
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3answers
2k views

Properly Attach Cabling To Joists

I am running cabling through my crawlspace roughly 40 feet. I have the holes drilled, and am leaving about 25 feet extra looped off for contingency. I am planning to attach the cabling to the joists ...
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1answer
3k views

How do I trace a damaged security system wire?

I have a hard wired security system. I just finished hanging drywall. During the process, I apparently damaged a wire to either one of 4 windows or the door because I am getting a fault in the ...
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5answers
2k views

Low voltage wiring ideas for house [closed]

I'm looking for ideas for low voltage wiring for new house/renovation. My house is gutted due to a massive flood. Walls are open so now's the time to upgrade. I am already pulling cat6 around the ...
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2answers
4k views

Is my dryer outlet not getting enough voltage?

I wonder if that's my issue as well. My dryer works fine, ( but won't heat up) and after replacing a few parts multiple times, and trying 2 different dryers on the same outlet, which all worked but ...
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2answers
7k views

Does it violate NEC to run an AC adapter's low-voltage output cable through a wall?

I want to mount an IP camera in a room. The power outlet and Ethernet ports are near the floor and I want to mount the camera near the ceiling. I was thinking of cutting through the wall at the top ...
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1answer
200 views

How to connect low voltage track lighting to line voltage?

I want to connect lo-voltage track lighting to the wiring in an existing wall outlet. Can I do that? Is there enough "power" in that wall outlet circuit to handle the track heads?
3
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1answer
23k views

Low voltage on circuit after breaker turned off - induced or backfed voltage?

I was planning on installing a programmable timer on one of the 4 single-pole switches on a circuit. All of the 4 switches control various lights towards the front of the house, one of which is a pair ...
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4answers
5k views

Mysterious cord running from wall. Safe?

My wife and I are preparing to sell our home and are discovering some weird things. Our home was built in 1958, so it is older. We found this in a corner that had some furniture in front of it. We ...
2
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1answer
408 views

How to run low voltage wire from one side of kitchen hood to the other?

I need to run low voltage wire for under cabinet lighting from one side of an exhaust hood to the other. I would like to install a conduit so that the wire can be pulled later in the project (after ...
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1answer
4k views

How to locate a cut low-voltage ethernet wire behind drywall?

My house's builders seem to have cut one of the Cat-6 internet cables somewhere along it's run from the basement to the data hub where all of the other cables converge. It might even be between the ...
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1answer
168 views

I soldered 2 AAA batteries together in series but am not getting double voltage [closed]

I'm sure this is rudimentary, but I'm very inexperienced in anything practical with electronics. Would like to try to get a 3volt battery go run some LEDs. I thought I could just take two AAA ...
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2answers
879 views

How to protect wire from excessive heat?

I'm running led strip lighting, on a hallway floor, for accent lighting. The floors are Warmboard subfloors, which house radient pex tube. Here is the Problem: When running the 18 awg cl2 wire, the ...
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1answer
2k views

Wiring home network patch panel (568A vs 568B)

I've bought a data patch panel in order to cleanup my home network wiring (which was a mess). Before wiring the patch panel I didn't read about the two wiring options: 568A and 568B. I've wired the ...
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2answers
123 views

Repairing Basement Wall Framing After Subpanel install notched to 75%

I have a home I bought a few months ago and I'm working on finishing out the basement space. The builder put in a 2x6 wall 12" on center. I quite certain it's a load bearing wall. 2 Story house with a ...
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4answers
10k views

Why is my electric fence killing birds?

I have an electric fence/wire around the top of my split-rail fence surrounding about 1 acre of land. I keep finding dead birds right next to/under the fence wire. Not just one or two, but actually ...
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2answers
10k views

What is the proper way to solder two different gauge stranded wires?

How does one properly solder a 10 AWG copper stranded wire with an 18 AWG copper stranded wire. There are plenty of tutorials on how to solder same gauge wire, but what is the recommended way to ...
3
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1answer
407 views

Is it necessary to ground a metal Knock Out Box used solely for POE Ethernet wire?

I'm running electrical conduit to metal knock out boxes throughout a new construction residential home. The knock out boxes are soley used for POE ethernet. Do the metal knock out boxes need grounded ...
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2answers
2k views

How to attach 10 AWG wire to LED strip lights?

I'm running LED light strips from a location that is over 50 feet from the LED transformer. In order to account for voltage drop 10 AWG CL2 wire has been used. Questions Since the 10 AWG wire is so ...
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2answers
101 views

How to and what tools do I use to cable between 3 floors at my house.

What tools do I need and what techniques do I use to to cable a cable (coax) between 3 floors. Actually it's from my first floor of a two story home to the attic. I have searched and searched ...
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0answers
679 views

Separating wall cavity from cold air return for cable

I'm running cable for a motion sensor for our alarm system. I want to put it in the corner of the room and run the cable down inside the wall cavity, then through the right-side stud and down to a ...
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1answer
15k views

Central Air Unit not Sending Enough Power to Thermostat

Right now I don't have specifics on my central air unit (make, model, etc) but hopefully the info I provide will help. I have a Second Generation (and Third Generation) Nest Thermostat hooked up to ...
4
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1answer
3k views

How to leave low voltage wiring behind wall?

I am having a new home built and I am putting in my own low voltage wiring. In addition to standard network wiring, I am hoping to install CAT6 wiring for a few potential future tasks: surveillance ...
3
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6answers
23k views

AC Voltage on Coaxial Cable (Cable TV)

I have an issue with my cable box (with DVR). Every morning it displays the word "Boot". I have to reboot it in order to restore cable service. I called the cable company (Comcast) and they came ...
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2answers
203 views

How to install low voltage bracket through a drywall block?

When installing an old work low voltage ring/bracket in a room (for a network plug), I cut the hole where there is a block behind the drywall. The block is what looks to be a 1x4, going vertically ...
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1answer
2k views

wireless ceiling fans with low voltage

I am troubleshooting some electrical issues on three different ceiling fans in my upstairs bedrooms. All three are wireless Harbor Breeze ceiling fans. They all have the same issues but at varying ...
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2answers
4k views

Testing wire with low voltage current

What is a convenient and safe way to send some low voltage current through wire for testing and identifying purposes? E.g. awhile ago, I wired a two speaker setup behind drywall with one input box ...
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1answer
1k views

Ethernet jack near power cable

I have an un-shielded Cat5E cable that I'm pulling down a wall along a stud. Near the bottom of said wall there is a 120v line running parallel to the floor. 1) Is it OK to terminate the ethernet in ...
5
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2answers
1k views

Does conduit terminated in backless gang boxes defeat the purpose of fireblocking?

My understanding for an ENT conduit (other than for future flexibility) was that it was fire-rated, to reduce the spread of fire/air-flow between floors. If the conduit went through fire-blocks or ...
3
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1answer
266 views

Poor LED dimming performance

I recently bought this LED dimmer to drive these LED bulbs on my recessed lights. The fixtures have a built in transformer that drops the voltage to 12v, but I'm bot sure if they are MLV or ELV ...
2
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1answer
178 views

How to make proper crimp joint

For some low voltage applications, I'm trying to use "crimped" connections. Specifically, I'm trying to use yellow terminals with 12 AWG stranded wire. I got a cheap color-coded ratcheting crimper for ...
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1answer
1k views

What should I do after a low-voltage wire was cut putting the furnace door back on?

I have the basic Honeywell thermostat that a lot of people have. All the thermostat wires go to the blower in the attic (for the central air). They are spliced with wires that then go to the furnace. ...
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1answer
122 views

Will this non Contact voltage detector be adequate for my use case?

Read somewhere that if I want to be super safe I should not only cut the breaker, but also use a voltage detector to be 100% sure there really is no current. Looking on ebay they are real cheap: It ...
2
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1answer
1k views

Interference with cable and electrical in same box

I'm finishing a basement and am running cable to 2 of the rooms in the basement. I would like to run the cable into a double gang box with the cable outlet on one side and an electrical receptacle on ...
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1answer
255 views

Backlight moving mirror in bathroom

Bathroom will have a medicine cabinet behind the mirror. Going to use wall mount sliding door hardware to make the mirror move. Will look similar to this: I would like to use some 12v LED lights on ...
2
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4answers
4k views

Can fluorescent lamps work in low voltage grid?

My country house has low voltage (150~180V) and the lighting is mostly comprised of incandescent lamps. I don't really know if voltage has anything to do with the brightness of incandescent lamps, but ...
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1answer
1k views

Any recomendations for low-voltage wires through walls?

I have found a good central location to mount a router, however it does not have power nearby. Instead working with 120V wiring, I thought it might be easier to just make a small hole/tunnel/conduit ...
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3answers
22k views

Low-voltage lights turn on then start to flash

I've got a string of LV lights in my kitchen that over the last few weeks have started to behave oddly. They will turn on and the one farthest from the power supply are dimmer than the ones closest (...
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0answers
183 views

What do I need in order to fix the sloppy work done by cable providers? [duplicate]

As some of you have surely experienced, residential telecom installers can leave a thing or two to be desired when it comes to how they get the service into our homes. A small project I've had in ...
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1answer
3k views

Is there an advantage to using EMT over Plastic Flexible Conduit for Low Voltage runs?

I am planning a structured wiring project. As AV wiring is always changing, I think it would be pertinent to run the low voltage wire in conduit. While discussing the idea with a friend (and hardware ...
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0answers
1k views

Fireplace switch: wiring length/gauge limitations?

We have a propane fireplace insert that can be wired up for a switch. Right now, there are two 6" 18g single-strand leads that when nutted together complete the circuit allowing the fireplace to turn ...
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1answer
617 views

Is it safe to run a Kinect 360 cable in drywall?

Does anyone know if it's safe / compliant to run a Kinect 360 cable in drywall? No extension, just the original cable, running a vertical 5-8 ft segment.
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1answer
1k views

At what voltage are "low voltage" junction boxes not appropriate?

120VAC needs a proper, enclosed junction box. Speaker cable, data, and low voltage power are fine with the more open low-voltage boxes. At what voltage are the enclosed boxes required? Do PoE lines (...