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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48 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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71 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
44 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
29 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
47 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
63 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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42 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
36 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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48 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
45 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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64 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
101 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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57 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
78 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
119 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
201 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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46 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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2answers
71 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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120 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
66 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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107 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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183 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
34 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
98 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
98 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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1answer
186 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
5k 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
845 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
2k 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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2answers
11k 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
390 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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0answers
224 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
71 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
1k 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
114 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
30 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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1answer
612 views

Proper craftsmanship to mount Wi-Fi AP and ethernet cable to ceiling?

I'd like to add a ceiling-mounted Wi-Fi Access Point to the upper floor of an already existing house (USA, wood studs, built 1998). I have access to the attic above and would run Category 6 ...
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1answer
96 views

Manual and Remote Switches - 12VAC low-voltage landscape

I have a 110V/12VAC (USA) transformer for common landscape lighting. We have 3 "zones" that I'd like to turn on/off as desired, two for lights (all LED at the moment) and one for a pond. My plan for ...
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1answer
43 views

Security System Sensor Wiring Questions

I just disassembled my wired security system to hook my sensors to a konnected board to self manage through Smartthings. Inside the panel box cover is a listing of the zones. Basement Door Basement ...
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2answers
609 views

12 Volt DC wiring in existing home for under soffit LED lights

I am toying with the idea of putting in down facing LEDs under the soffits in an existing vinyl sided home. I have an old 300 W landscape lighting transformer I wish to use for this. What kind/gauge ...
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2answers
398 views

Smartify 50s low-voltage lighting system

I bought a house with a low-voltage lighting system, where the switches have low-voltage wires that power relays that actually power the full-voltage lights. I want to find out if I can take advantage ...
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2answers
58 views

Can I use an over-rated transformer for a low-voltage lighting circuit?

I am trying to do a simple low voltage lighting design. I intend to use 3 18w incandescent bulbs just to light a small area. I want to know if there is a problem using a 120w transformer for this or ...
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149 views

to Calculate the capacity of Voltage Stabilizer required for Home use

wanted to calculate the capacity of a voltage stabilizer for home use, Refrigerator has its own inbuilt voltage stabilizer, please tell me shall i have to include the refrigerator to calculate the ...
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3k 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
114 views

Electrical Circuit low voltage [solved]

Let me start off by saying, I'm lost lol seriously. Ok I'll try my best to explain my situation here. I have 5 outlets on a 20 amp breaker with 14/2 wire All 5 outlets read around .57 to .76 voltage....
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2answers
171 views

Coax and cat6 close to the main power trunk

I want to run coax (for a cable modem) and cat6 (for a phone connection) from the garage (where my cable and phone boxes are located) to my basement. The garage wall is not drywalled, so I can run ...
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1answer
86 views

can i use a transformer to run an american steam cleaner ( 120v/60hz) on a 220v/50hz

i recently purchased a steam cleaner ( sienna Luna plus) willing to use it in Algeria, but it is designed to be used in the US , the only way i found to transform 220 v 50 hz to 110 v ( i think ...