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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21 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
27 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
125 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
125 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
175 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
155 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
142 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
54 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
44 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
173 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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1answer
55 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
18 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
99 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
75 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
41 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
28 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
265 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
94 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
52 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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79 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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2answers
1k 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
63 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
110 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
55 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 ...
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2answers
165 views
What is this unit attached to my house, and what do I replace it with?
I am trying to figure out what this thing is.
I assumed it's a bell ring transformer but then it has four terminals on it.
Any help is appreciated!
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3answers
81 views
Can I double-feed a low voltage DC system?
I am trying to make some lighting resilient to breaker trips. (I.e. You trip the breaker and the lights don't go out.)
Naturally it's all LED, and I am favorable toward low voltage DC lighting.
...
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1answer
165 views
Running low voltage wiring around HVAC equipment
I added a bypass humidifier to my forced air furnace. The control panel is mounted to the return duct, and the wiring runs from the panel into the furnace fan compartment.
Wires run from the water ...
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1answer
630 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
546 views
Can I wire my under cabinet lighting in parallel?
Not sure if this is the appropriate place, or something like DIY. I have purchased 6 of these light bars from Amazon https://www.amazon.com/gp/product/B074NX7H1K/
The power supply is 6A and each bar ...
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2answers
495 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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1answer
704 views
How to attach a security camera to an existing box?
Our house was wired for security cameras, when we moved in, and I'm now getting around to install the cameras on some of the corners.
However, the cameras and the separate mounts on sale today all ...
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0answers
86 views
Please help identify thing wired into my home alarm
Wired into my alarm panel per the enclosed photo is a small black-wrapped device wired to the 12V+, - & Earth.
What might this be for - voltage stabilisation, noise reduction, ...?
Grateful for ...
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0answers
399 views
Voltage Drop between W1 and Rc wires
I recently converted from Oil to Gas. One of my zones is no longer working post conversion (it was working, then nothing worked, and then after they replaced a defective unit on the boiler it didn't ...
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2answers
77 views
100 volts measured in fuse socket!
Just endured hurricane Irma here in S. FL. FPL finally turned the power on (and off a couple times) after days of outage. Now, one section of my kitchen is out while rest of house is on! checked the ...
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66 views
low voltage lighting--half the lights work
I have approximately 15 lights connected to a 600 watt transformer. When they go on at night set for two hours only 8 of them go on. If I put them on all day to test them the other 7 go on but not the ...
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3answers
863 views
What's the “correct” way to install LED drivers for accent lighting?
I want to install LED strip lighting behind crown molding in my office. In my particular install, I'm using 3 strips of SMD 5050 RGBW LEDs, which draw about 72 W per strip. From what I can gather, ...
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3answers
92 views
Is it permissible to install a low-voltage fixture over an existing ceiling box?
I inherited an installation of several wired AC smoke detectors. They're three-wire units (AC hot/neutral, plus an interconnect wire). At some point a previous installer removed one of the detectors, ...
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1answer
63 views
Can an RCD protect against transformer failure?
I want to install LED lights in a pool. The original transformer outputs 12V 6A. Now I don't trust my life to a cheap transformer so I want to go sure. Yet I also don't want to spend more money than ...
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1answer
347 views
Control 12V LED circuit and 120V power supply from one switch
I want to have two switches (preferably in the same box) that control two separate runs of LED lights, both powered by a single Allanson power supply:
I plan to switch the lights by breaking the 12V ...
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1answer
85 views
Low-voltage cabling through ceiling? Up to code?
I'm making a CCTV / Router "space", and was thinking of just drilling a hole in the ceiling and installing a gang box on the attic side of the ceiling. Are there any codes that refer to this kind of ...
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3answers
628 views
How do I run ENT to an old work box?
I have an existing low-voltage old-work box similar to this which I am using to provide a cable TV outlet:
I would like to run more cables to this location, namely, phone and CAT6. I do have access ...
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2answers
123 views
Is it ok if I pass through a RJ11 (Phone line) cable outside and leave it while it is raining?
I'm stupid and paranoid 😂 but just to make sure, is it safe to leave a phone lines (rj11 I think) outside while raining, the front and end BIT is inside the house (forgot what it's called, the bit ...
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2answers
2k views
Do low voltage wires need to go in a junction box
My AC blower is in the attic. It has a number of low voltage control wires that are not in a junction box. I am planning on blowing insulation into the attic, but I am not sure what to do about the ...
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4answers
215 views
Where does the voltage in a circuit go from 120v down to 0v?
I've always wondered where precisely the voltage on a circuit drops from 120v down to 0v. It's "somewhere" inside of the load (a lightbulb or whatever), but doesn't exactly make sense, because if it's ...
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1answer
72 views
Is it safe to replace ethernet wall plate with a camera?
I want to mount a camera horizontally with no wires showing. I thought it might be easiest if I just covered the ethernet wall plate with the power over ethernet camera. This would completely cover ...
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2answers
903 views
Do I need an enclosed wall box for a cat5e cable?
My home builder gave me cat5e outlets in the wall (near the ceiling, for cameras) with just a plain white wall plate. Behind the wall plate is an open back wall box (I think), the cat5e cable and a ...
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1answer
643 views
Is it normal for coax cable to carry this much voltage?
I recently had a problem with my internet going out (cable). I went a few hours later to check if anything was loose on the box on top of the breaker panel. I opened it up and noticed cable coming ...
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3answers
877 views
Splitting one main low voltage power line into two
I'm installing under cabinet lighting and haven't worked with low voltage wire before and trying to determine the best option. I'm using 18 gauge wire (stranded) to wire LED lights. In my particular ...
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2answers
185 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
349 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 ...
