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

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56 views

Repairing Basement Wall Framing After Subpanel install notched to 75%

I have a home I bought a few months ago and I'm working on finishing out the basement space. The builder put in a 2x6 wall 12" on center. I quite certain it's a load bearing wall. 2 Story house with a ...
3
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1answer
105 views

Why is my electric fence killing birds?

I have an electric fence/wire around the top of my split-rail fence surrounding about 1 acre of land. I keep finding dead birds right next to/under the fence wire. Not just one or two, but actually ...
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0answers
22 views

electric, breaker, to light switch, to garbage desposel stopped working

I have a short run from breaker to a basement light switch to garbage disposal. last month the garbage disposal stopped working, I replaced it and then it stopped again after about 5 times. I took ...
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2answers
61 views

What is the proper way to solder two different gauge stranded wires?

How does one properly solder a 10 AWG copper stranded wire with an 18 AWG copper stranded wire. There are plenty of tutorials on how to solder same gauge wire, but what is the recommended way to ...
3
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1answer
47 views

Is it necessary to ground a metal Knock Out Box used solely for POE Ethernet wire?

I'm running electrical conduit to metal knock out boxes throughout a new construction residential home. The knock out boxes are soley used for POE ethernet. Do the metal knock out boxes need grounded ...
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2answers
63 views

How to attach 10 AWG wire to LED strip lights?

I'm running LED light strips from a location that is over 50 feet from the LED transformer. In order to account for voltage drop 10 AWG CL2 wire has been used. Questions Since the 10 AWG wire is ...
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0answers
40 views

Sprinkler valve solenoids won't activate at manifold

For years, the automatic sprinklers in my house worked fine (they were there when I bought the house). A few months ago, I noticed that the station which controls drip irrigation for shrubs would not ...
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0answers
29 views

How to and what tools do I use to cable between 3 floors at my house.

What tools do I need and what techniques do I use to to cable a cable (coax) between 3 floors. Actually it's from my first floor of a two story home to the attic. I have searched and searched ...
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0answers
29 views

Separating wall cavity from cold air return for cable

I'm running cable for a motion sensor for our alarm system. I want to put it in the corner of the room and run the cable down inside the wall cavity, then through the right-side stud and down to a ...
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1answer
140 views

Central Air Unit not Sending Enough Power to Thermostat

Right now I don't have specifics on my central air unit (make, model, etc) but hopefully the info I provide will help. I have a Second Generation (and Third Generation) Nest Thermostat hooked up to ...
3
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1answer
275 views

How to leave low voltage wiring behind wall?

I am having a new home built and I am putting in my own low voltage wiring. In addition to standard network wiring, I am hoping to install CAT6 wiring for a few potential future tasks: surveillance ...
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1answer
5k views

Why do I have low voltage and backfeeding between circuits throughout my whole house?

If I plug a hairdryer or anything else into a outlet, I lose voltage in the whole house. If I plug the iron in, the stove surges. This is a nightmare. I can't run the fridge; I can't even get the TV ...
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0answers
12 views

Sudden low-voltage to the HVAC UV light unit

The UV-light installed in the HVAC quit working. Replaced the unit which still didn't work. Had the new unit tested by the manufacturer and its ok(they repalced it anyway). Tested the power source ...
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1answer
56 views

wireless ceiling fans with low voltage

I am troubleshooting some electrical issues on three different ceiling fans in my upstairs bedrooms. All three are wireless Harbor Breeze ceiling fans. They all have the same issues but at varying ...
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2answers
48 views

How to install low voltage bracket through a drywall block?

When installing an old work low voltage ring/bracket in a room (for a network plug), I cut the hole where there is a block behind the drywall. The block is what looks to be a 1x4, going vertically ...
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1answer
21 views

Replacing batteries with transformer [closed]

I have a small decoration that has 6 LEDs powered by 2 AA batteries in series = 3 Volts. I have a wall plug 120VAC to 3.7 Volts DC transformer. Can I replace the batteries at 3 Volts with a ...
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1answer
172 views

What should I do after a low-voltage wire was cut putting the furnace door back on?

I have the basic Honeywell thermostat that a lot of people have. All the thermostat wires go to the blower in the attic (for the central air). They are spliced with wires that then go to the furnace. ...
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0answers
30 views

What are the building codes for installing cat6 in a commercial building?

I am installing a security camera system in a brand new construction site, in a restaurant to be exact. I am not doing any electrical wiring, everything is plug and play. However, I am installing data ...
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2answers
446 views

Testing wire with low voltage current

What is a convenient and safe way to send some low voltage current through wire for testing and identifying purposes? E.g. awhile ago, I wired a two speaker setup behind drywall with one input box ...
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1answer
70 views

Ethernet jack near power cable

I have an un-shielded Cat5E cable that I'm pulling down a wall along a stud. Near the bottom of said wall there is a 120v line running parallel to the floor. 1) Is it OK to terminate the ethernet in ...
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2answers
191 views

Does conduit terminated in backless gang boxes defeat the purpose of fireblocking?

My understanding for an ENT conduit (other than for future flexibility) was that it was fire-rated, to reduce the spread of fire/air-flow between floors. If the conduit went through fire-blocks or ...
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1answer
72 views

Poor LED dimming performance

I recently bought this LED dimmer to drive these LED bulbs on my recessed lights. The fixtures have a built in transformer that drops the voltage to 12v, but I'm bot sure if they are MLV or ELV ...
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1answer
66 views

How to make proper crimp joint

For some low voltage applications, I'm trying to use "crimped" connections. Specifically, I'm trying to use yellow terminals with 12 AWG stranded wire. I got a cheap color-coded ratcheting crimper for ...
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1answer
172 views

Backlight moving mirror in bathroom

Bathroom will have a medicine cabinet behind the mirror. Going to use wall mount sliding door hardware to make the mirror move. Will look similar to this: I would like to use some 12v LED lights on ...
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1answer
94 views

Will this non Contact voltage detector be adequate for my use case?

Read somewhere that if I want to be super safe I should not only cut the breaker, but also use a voltage detector to be 100% sure there really is no current. Looking on ebay they are real cheap: ...
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1answer
226 views

Interference with cable and electrical in same box

I'm finishing a basement and am running cable to 2 of the rooms in the basement. I would like to run the cable into a double gang box with the cable outlet on one side and an electrical receptacle on ...
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0answers
196 views

Fireplace switch: wiring length/gauge limitations?

We have a propane fireplace insert that can be wired up for a switch. Right now, there are two 6" 18g single-strand leads that when nutted together complete the circuit allowing the fireplace to turn ...
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2answers
680 views

Low-voltage lights turn on then start to flash

I've got a string of LV lights in my kitchen that over the last few weeks have started to behave oddly. They will turn on and the one farthest from the power supply are dimmer than the ones closest (...
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2answers
767 views

Low voltage under load from main line

I have two main hot lines coming into my circuit breaker. One has a steady voltage of ~124 load or no load. The other has some mysterious problem. Sometimes it works fine delivering proper voltage ...
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0answers
95 views

Extra low voltage over mains voltage circuit [closed]

Is anybody aware of any regulatory issues that forbid a domestic mains voltage spur from being driven at, for example, 12Vac / 2A / 50Hz i.e Extra Low Voltage. If this were to be legal, it could be ...
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4answers
1k views

Can fluorescent lamps work in low voltage grid?

My country house has low voltage (150~180V) and the lighting is mostly comprised of incandescent lamps. I don't really know if voltage has anything to do with the brightness of incandescent lamps, but ...
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1answer
665 views

Any recomendations for low-voltage wires through walls?

I have found a good central location to mount a router, however it does not have power nearby. Instead working with 120V wiring, I thought it might be easier to just make a small hole/tunnel/conduit ...
2
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0answers
62 views

What do I need in order to fix the sloppy work done by cable providers? [duplicate]

As some of you have surely experienced, residential telecom installers can leave a thing or two to be desired when it comes to how they get the service into our homes. A small project I've had in ...
3
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1answer
1k views

Is there an advantage to using EMT over Plastic Flexible Conduit for Low Voltage runs?

I am planning a structured wiring project. As AV wiring is always changing, I think it would be pertinent to run the low voltage wire in conduit. While discussing the idea with a friend (and hardware ...
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1answer
563 views

Is it safe to run a Kinect 360 cable in drywall?

Does anyone know if it's safe / compliant to run a Kinect 360 cable in drywall? No extension, just the original cable, running a vertical 5-8 ft segment.
3
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1answer
386 views

At what voltage are “low voltage” junction boxes not appropriate?

120VAC needs a proper, enclosed junction box. Speaker cable, data, and low voltage power are fine with the more open low-voltage boxes. At what voltage are the enclosed boxes required? Do PoE lines (...
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1answer
419 views

Residential electrical installation, at what voltage is a licensed contractor required?

I'm trying to figure out regulatory requirements for residential electrical installations. Specifically, when is a licensed electrician required by code to perform an installation? Obviously you don't ...
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2answers
907 views

Practical limits of how many LEDs can you use to replace halogen 12V?

I'm gradually replacing halogen lights at home with LEDs. We have a couple of 12V rails with a 5x35W rating when using halogens. When using the same transformer with LED's, can I use the theoretical ...
5
votes
2answers
945 views

Can 18/2 CL2 barostat cable be used for speakers?

We're wiring our kitchen for a stereo speaker system. There was only enough 18 gauge speaker wire for one speaker, so the electricians used 18/2 barostat wire for the other. The speaker cable seems ...
5
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2answers
7k 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 ...
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5answers
1k views

How to replace wire next to another wire?

Currently I have, courtesy of the last owner, 3 wires running to the "socket" behind my TV. It's a coax and 2 audio cables (image below), and they go to the fuse box/meter box in the hallway. . I'm ...
3
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1answer
911 views

How do I string a low voltage wire between two buildings?

I need to get Cat6A to an outbuilding for network communication; underground is not an option. I think I have an idea on the method: grounded pillars with a guyline and the outdoor cable. What NEC ...