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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1answer
458 views

How do I connect the chime unit with my doorbell camera?

I bought an Amcrest AD110 doorbell camera. I installed and it works but I noticed pressing the button does not ring the doorbell. I can't figure out how I am meant to wire this. Here's the ...
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1answer
223 views

Is there a good way to get 12v into an electrical box?

I have a bit of an odd situation. I have a standard outlet (120v, 15 amps, just a normal United States receptacle). I'd like to run some raceway conduit up from the outlet*. At the other end of the ...
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2answers
61 views

Interfacing line and low voltages for automatic receptacle control

I would like to build some electronics to automatically and individually control two receptacles on a 20A circuit. Is the following a good plan? Fish 12/4 NM through the wall from the receptacles' ...
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2answers
46 views

Install old work low voltage bracket in too big hole

I'm trying to repair a low voltage outlet that was butchered by our cable installer. I was hoping I could reuse the bracket he had used by the "wings" were on serrated or corrugated tabs ...
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1answer
80 views

Should I change how this switch is wired for a low voltage light?

In my kitchen I have these three switches. From left to right they are: Cabinet accent lights Under-cabinet task lights Garbage disposal The middle switch no longer functions properly (it looks like ...
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1answer
63 views

What kind of conduit for cable riser raceway?

Some background: I asked a longer version of this question here. I recently bought a late 70s, two story home. I am working on (i.e. planning and budgeting) a project to wire the home for ethernet, ...
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4answers
325 views

Computer I/O Button on a Wall Plate [closed]

I am looking to put a computer monitor in my kitchen and the actual computer in my basement. I want to install a wall plate in my kitchen with a button that can turn the computer on and off. ...
2
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2answers
98 views

Finding unused Cat5 cables

I recently moved into a house built in 2015, and I’ve been trying to see how practical it is to wire parts of the house for Ethernet. In the basement, there’s a bundle of 9 Cat5e cables. 6 of them ...
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63 views

Resurfacing a raised deck; want waterproofing (dexerdry); need gutters? Also: comment on plan?

Thanks for reading. I'm starting the planning stage of a raised deck (without space underneath) overhaul/resurfacing. I have one concrete question regarding waterproofing but would also appreciate ...
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3answers
2k views

Does code allow for in-wall mounting of low voltage transformers?

I am asking if NEC code permits for in-wall (gang box) mounting of low-voltage transformers and power supples, and if so do these product have a name or term? My use case is low-voltage electronics ...
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2answers
116 views

How can I power pergola lights from a remote outlet?

I built a pergola in middle of my backyard. I have only one power outlet in my house wall facing backyard. I am also planning to connect the low voltage led landscape lights for the garden and put the ...
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2answers
2k views

Landscape lighting wire rough in for future, what wire, how deep? Other things to consider?

I am currently working on my landscaping and I have a concrete pour planned for the front paths. I'd like to rough in landscape wire for future lighting. What kind of wire should I use, how deep ...
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38 views

Problem with AC low voltage

My AC won’t turn on and the thermostat is not functioning properly. Voltage reading at the thermostat fluctuates between 7-9 volts. No low voltage at the contacter. I am still getting 240 at the ...
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1answer
138 views

Is it possible to make an "energy harvester" that drains old batteries? [closed]

I am currently looking at my stack of old batteries at home, did some measurements and found that most of them contain at least some energy left. I was then thinking. What is I could make a device ...
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0answers
90 views

Low-voltage LED light strip through wall to outlet - Allowed?

I am installing some cabinets in my basement media room. I'd like to use a Philips Hue Lightstrip for accent lighting. The other side of the wall on which the cabinets are mounted is unfinished - it's ...
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3answers
419 views

Low-voltage splices behind Drywall without junction box access?

For 120VAC, I know that 'splices' in NM/Romex are not allowed behind drywall: there must be a junction box to inspect the splice. For low-voltage, such as CATV, how big of a deal is it? The previous ...
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2answers
429 views

Can I control a heat pump and boiler heat with one thermostat?

I want to swap out the old air handler for a new one and the old straight AC for a heat pump. I will not be putting a heat package in; I will use my boiler as the emergency heat. The boiler is in the ...
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2answers
350 views

Wiring low voltage doorbell wire through exterior wall and studs

I currently have a battery powered doorbell that I would like to replace with a hardwired doorbell. Problem is, my house is not wired for a doorbell. My solution is to replace the outlet in the ...
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2answers
41k views

Why can't I (or: shouldn't I) run a power cord through a wall?

I would like to wall-mount my TV and have the wall be as clean as possible. I found this box and my idea was to mount this on the back side of that same wall , then run the power cable (and other ...
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30 views

LED lighting fixture driver busted - what can I replace it with?

A LED lighting fixture in my apartment (in Israel/Palestine) started flickering for a while before coming on, then went bust. I suspect it's the driver/power supply rather than the LEDs themselves, ...
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1answer
55 views

Low voltage LEDs fluctuate from full to half to off and repeat

I purchased and installed 100' of 16/2 wire and eight lamps (LED Lawn Light 12W 2800K AC/ DC 12V) and Malibu’s 200 Watt Low Voltage Transformer. 96 watts of lamps, I was told, would be perfect for a ...
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1answer
3k views

Goodman Model GPC1242H41CA Blowing Low volt fuse ONLY when heat is turned on

Good Afternoon from Florida!! I have a two year old Goodman Model GPC1242H41CA package unit that has heat strips, I had a short that eneded up causing me to replace the transformer and the control ...
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2answers
187 views

How to connect 14 guage speaker wire to LED light strips?

I am installing 12v undercabinet led light strips in my kitchen. I have in-wall 14-2 speaker wire and I'd like to use this to connect a 4 short runs (8 ft total) of LED light strips. Most of the ...
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1answer
191 views

Is it permissible to cover over an ethernet (or other low voltage) wall plate

I am building a built-in bookshelf that covers a good portion of a wall. I know it is not to code to bury an electrical junction box, so I moved an outlet accordingly. I also have an ethernet data ...
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24 views

What relay is needed?

I would like to use a thermopile to activate a 110 relay to turn on a fan. What relay would be needed? Thanks, Michael.
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3answers
504 views

How to control 120V power outlet with low voltage

I would like to power a 120V attic fan every time my AC comes on. The low voltage wire connecting the thermostat with the compressor (to control the compressor) runs through the attic (as the ...
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3answers
14k views

How big a hole can I drill in a top plate?

I've got a 2nd story home theater room under construction. The framing has been done, but I'm going to be doing the wiring myself. I want to pass some conduit up into the attic space over the room for ...
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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 ...
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1answer
65 views

Voltage live to neutral low

I'm in the uk on 240V. I've got an extractor fan that isn't working. What I find is that at the fan and the switch that operates it, live to neutral is 160V. Ground to live reads 240 and ground to ...
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10 views

One of my IC1004-WH Legrand ON-Q Inquire 1000 intercoms isn't working, is it possible a POE injector would help?

One of my IC1004-WH Legrand ON-Q Inquire 1000 intercoms isn't working, is it possible a POE injector would help? It's a pretty long run, although other longer ones are working. It has worked somewhat ...
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2answers
2k views

Hormann garage door opener automation with Loxone

I own a Hörmann Supramatic 3 garage door opener and in my house I've also set up Loxone home automation system, so I decided to connect the opener to the automation system, so I can control the garage ...
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9answers
6k views

What is a proper way to support/suspend cat6 cable in a drop ceiling?

I am trying to run some cat6 cable in the drop ceiling of my basement. I want to run 3x CAT6-CMP cables that from what i understand should not rest on ceiling tiles. From what i have read, the ...
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2answers
207 views

How to implement a zoned low-voltage lighting?

I have about 80ft of exterior stairs with two landings to which I want to add three zones of low-voltage lights. I would like a 3-way switch controlling each zone at the top and the bottom of the zone....
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1answer
111 views

Low Voltage Home Wiring

I have a custom built new construction home, but I was not involved with the build process, so I don't know the thought behind some of the equipment decisions. I am an engineer, so curiosity has me ...
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1answer
25k 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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6answers
24k 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
3k views

Is it OK to use gray PVC electrical conduit for low voltage wiring?

I'm having my basement finished, and I am going to run conduit for low voltage (network) wiring in a week or two myself. I have been planning on using gray PVC electrical conduit like this, since it'...
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1answer
414 views

Making low voltage prettier/weatherproof?

I've got a big hole in my exterior wall where several coax and (old) phone cables punch through. It's just... there in the stucco. All of my low voltage wires are just hanging out on the outside wall ...
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2answers
354 views

How to mount a 12V transformer for indoor lighting

I'm installing 12V lighting in my basement in the exposed joists. I bought this LET-75 transformer to run them, but I'm not sure how to mount it. There are no mounting holes of any kind, for one ...
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2answers
595 views

How can I use a 15A momentary switch (switches) to replace my multi-button wall-mount garage door opener?

My wall-mount garage door opener was pretty beat up when I moved in and has only gotten worse to the point the open/close button is cracked and is difficult to operate for my kids. I would like to ...
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1answer
192 views

Low voltage vs. regular lighting for closets: What are the technical and code considerations?

I'm hoping to put some lights in a residential hallway closet, so it's easier to see inside. I am considering running low voltage lighting (eg. these LV pucks), or a small regular-voltage light ...
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0answers
53 views

Ontario 12VDC Electrical Code for LED Strips

Non-electrician here. I'm considering installing 12VDC LED strips along the ceiling perimeter of a room and I was wondering if there is any electrical code (in Ontario) regarding power delivery. ...
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2answers
187 views

Can I re-task a large conduit to hold a small conduit and low voltage cables?

To revisit our occasional questions on sneaking a low voltage cable into an AC mains conduit... Suppose you have a fairly large electrical conduit, say, 1-1/2". You also have some sort of ...
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2answers
5k views

What should I leave in the walls to allow me to fish future wires?

I'm working with a builder, and I did all of my own low-voltage wiring to open low voltage single gang plates. I have some runs that I want to be able to fish future wires through. Some of my runs ...
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1answer
66 views

Low voltage on homerun

I have a homerun that goes directly to GFCI that is only getting 88 volts. From hot to ground is 122v, from neutral to ground is 23v. In the panel I am getting 122v also. I have 3 outlets past the ...
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1answer
174 views

Should I replace ELV 12V transformers with LED drivers?

I have 3 pendant lights, each with its own ELV 12v transformer stuffed into its junction box, controlled by a Lutron MA-PRO dimmer that supports ELV, MLV, LED, and incandescent lighting. I would like ...
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1answer
376 views

Bringing aerial cable into an existing PVC Conduit Body

I have an existing exterior conduit entering my house, carrying low voltage (CAT6, Coax) wires from our detached garage to my inside equipment room. I need to bring a new fiber-optic cable (for fiber ...
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3answers
28k views

How do I properly bring in coax from the pole to the interior of my house?

As it is now, the coax comes off the pole and is anchored under the eave with a coax grounding block. From there, the local cable company stapled the coax down the siding, then horizontally around a ...
2
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1answer
59 views

Mounting a 1-gang alarm panel over a 2-gang hole

I am replacing a (discontinued) Leviton/HAI OmniPro II Home Automation system with a new Elk M1 Gold system. The OmniPro II keypads (model 33A00-1) are designed to be mounted either directly on the ...
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1answer
275 views

Are junction boxes needed for LED strip light wiring splices?

Are junction boxes required for 24v splicing in the United States? Are small plastic enclosures sufficient or would you use standard junction boxes for 110v? The application is a 24v lighting system ...