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Questions tagged [low-voltage]

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

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12 views

run of garden low voltage led's fluctuate from full to half to off and repeat

I purchased and installed 100' of 2/ 16 gauge 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 ...
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62 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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82 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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145 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
88 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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65 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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67 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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35 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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108 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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1answer
56 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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35 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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56 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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93 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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50 views

how to connect led string light to pergola in backyard

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 ...
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1answer
33 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
55 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
79 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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44 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
54 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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91 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
56 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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57 views

When my driveway gate opens (powered by 12v battery) i want a light to illuminate the driveway for safety

Is there a switch that can turn on the 110v lights?
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68 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
114 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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43 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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64 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
112 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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2answers
122 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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2answers
480 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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61 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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77 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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1answer
214 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
135 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
122 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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249 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 ...
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1answer
41 views

Can I add copper wire led lights to existing 12V Landscape Light Transformer

I have an existing 12V low voltage landscape lights set on a transformer. I have a 66ft copper wire LEDs that came with a 5V adaptor. Does this have to be plugged in separately; or can i connect it ...
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1answer
112 views

What's the proper way to bond metallic signal wiring raceway?

I have a stud cavity through which I need to run some signal wiring that's sensitive to ingress noise. An industry-standard recommendation is to run the wiring in properly bonded metal conduit (...
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1answer
107 views

Low-voltage LED Light string flickers when turned on, flickers go away after 2 mins

We have several low-voltage LED light strips in our light-up cabinets in the kitchen. They have all worked fine for 3 years. One of them has now started to flicker for a couple of minutes when turned ...
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2answers
282 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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3answers
7k 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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2answers
1k views

Can I put a low-voltage transformer in the attic?

I'm planning a low-voltage monorail light system, fitted with 10x 7.5W 12V AC LED light heads. The manufacturer provides a "remote electronic transformer", and the installation instructions call for "...
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3answers
4k views

How to connect router to patch panel in new home

I recently moved into a new home (new build). Comcast installed my internet, but was of no help getting my ethernet working. My builder told me the modem needs to be connected in here and then the ...
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16k 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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3answers
502 views

What's the purpose of this bundle of small wires in my closet?

I recently bought a house. In one of the closets, there is a small room with a bunch of wires, connections, etc. I'm in the process of figuring out what exactly is going on to see if I can use any ...
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293 views

Power options for alarm keypad

I'm installing an alarm system and I'd like some help figuring out the best way to provide power to the keypad. The keypad uses a micro USB cable for power. I want to mount the keypad on one side of ...
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1answer
81 views

Running Satellite cable from wall plate, under carpet to opposite side

I want to route my satellite cables, which are currently poking out of a media plate on one side of the room, to their destination on the other side. The challenges that I face are: Routing the ...
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1answer
2k views

Can I install a device transformer in a junction box to keep it behind the wall surface?

I'm in Oregon, USA, and trying to figure out a code-compliant way of hiding a wall wart (AC/DC transformer) behind a small device (about 3"x3"; if it matters, the specific device is a smart garage ...
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2answers
137 views

Landscape lighting system only puts out one volt

I've installed low-voltage (12V AC) lighting systems in my front and back yard. They're set up separately, but both use the same model of transformer and lights. I set this up in May 2017, so it's ...
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1answer
33 views

troubleshooting why tempstar PHF042 LV control fuse would intermittent every 7 days

I'm a commercial Electrician I'm at a job and they have trouble with their heat pump. Seemed simple enough, they had swapped out stats hot and presumably shorted the LV leads - I found an open 24vac ...
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1answer
1k views

Will a 3 inch (8cm) separation between CAT6 cable and 120V HV cable cause problems for 10-Gigabit Ethernet?

I recently had an electrician wire my house with CAT6 Ethernet cable and install a couple of outlets in my unfinished basement. I recently noticed that there is only a 3-4 inch (8-10cm) separation ...

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