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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40 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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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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37 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
135 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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64 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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168 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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136 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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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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119 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
124 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
265 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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61 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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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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9answers
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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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1answer
41 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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123 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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107 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
327 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
2k 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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277 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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174 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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42 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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155 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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62 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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127 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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299 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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297 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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2answers
103 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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1answer
53 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
204 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 ...
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1answer
329 views

Low Voltage Transformer in Subpanel?

I have a Pentair EasyTouch Automation system for the pool, and it is installed on the outside of the house in a subpanel. When it was installed, I also ran 12ga direct burial wire around the pool ...
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53 views

Convert 120 V circuit to 12 V by splicing LED driver into existing wiring

My kitchen has a light switch by the sink which operates a pendant light above the sink. I am making a DIY replacement light using a 12 V LED strip and a 4 ft. wooden dowel to be suspended ...
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1answer
159 views

Low voltage in my light switch after relocating a ceiling box

I am new to this site and hope all is well with everyone. I consider myself a DIYer. I research and talk to people before I jump into a job around the house. The second I reach my limits, I call the ...
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335 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
66 views

My first home network Cat 5e, fiber 1 gig internet [closed]

Thank you for taking the time and reading this, I hope you can give me a green light on my plans here!? I am getting fiber internet and wanted to set it up the following way. Please let me know if ...
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74 views
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97 views

System to charge 24V lead-acid battery from a 12V lead-acid battery [closed]

Our garage has no mains connection, but it does have a 12V leisure battery charged from a solar panel, connected to an inverter to produce 240V AC. That mainly gets used for charging a mobility ...
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1answer
169 views

Ethernet Cable Through Floor

I'm trying to add an ethernet drop to an entertainment center. The coax cable drop was drilled through the floor (picture), since the room below is an unfinished basement with easy ceiling access. Is ...
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45 views

New dimmer switch is not operating new led panels

I bought 4 new led panel lights for my drop ceiling and installed Saturday. I also purchased a 0-10 voltage dimmer switch. Yes the lights are dimmable and the switch is for low voltage. I can turn the ...
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115 views

How can I meet NEC code for Class 2 at the power supply with multiple strips of LED lighting?

...The Project... Install 94 feet of perimeter lighting around a kitchen/dining/living space. The desired product is a color tunable LED strip. Possibly this product but I could use an equivalent ...
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1answer
258 views

Class 2 transformer wire (only) through electrical panel?

Is there a way to legally run a wire through (but not terminating inside) the electrical panel carrying 9v? US Residential, 200A panel, surface mounted on block wall. I am installing an IotaWatt ...
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158 views

What is the maximum voltage you can have on exposed rails?

In this question, someone has a desk lamp with power totally exposed on metal parts. You also have installed overhead lighting on open rails doing the same thing. What does NEC say about the ...
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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
114 views

Best way to add low voltage outlet to wall that has blown in insulation on the other side?

I want to add a wireless AP and plop it on top of the cabinets in my kitchen; thing is the wall I want to add the low voltage outlet to had blown in insulation on the other side. (The ceiling is ...
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117 views

Help debugging this circuit, voltage across lights drops to half unexpectedly. Diagram in post

I fitted a PIR sensor at my parents' to turn the bathroom light on and off automatically last week but the lights are very dim. On inspection, there is only half of the potential difference across the ...
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651 views

Classy way to hide unused low voltage cut outs or should I just drywall over and paint?

In a home I recently purchased, there are a lot of cut outs for low voltage in places I do not plan to use. The wiring is there in some cases, but I don't plan to use many of these locations. They are ...
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1answer
605 views

Replace MR16 Low Voltage Lights with Standard fixtures

I regret having MR16 low voltage lighting (recessed can fixtures) installed in our home remodel. It covers more than half of my house. I would like to convert to recessed fixtures that are 120V and ...
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2answers
181 views

What type of quick disconnects for 18ga to 12ga low voltage wire connections?

I'm powering an 18ga 24V DC submersible pump for a water fountain in the yard using a 110V AC to 24V DC power supply (18 ga). I'm planning to use 12ga stranded low voltage wire (max.30V) from the ...
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1answer
485 views

Insulate back of high and low voltage gang boxes in attic

We just finished building a home, and I prewired an equipment closet upstairs for handling all of my networking, home theater and whole home audio equipment. It looks like this: All the single and ...