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

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88 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. ...
2
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1answer
36 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
107 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
73 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
86 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
111 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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0answers
15 views

can i add a motion sensor to a low voltage call system with 3 way switches used for activation?

I am looking to add a motion sensor to a low voltage nurse call system. the activation switch I am trying to feed off is a 3 way switch as there are two activation switches per room. I tried a 12/24 ...
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2answers
61 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
241 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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79 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
392 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
332 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 ...
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100 views

Low voltage undercabinet wiring termination / NEC

I am nearing the end of the construction of a new home through a developer. I am specifying low voltage undercabinet lighting (circuit only) and will install LED strip lights after ...
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0answers
58 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
votes
1answer
501 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
542 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.
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1answer
198 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
273 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
735 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 ...
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1answer
3k 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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2answers
536 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
4k 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
774 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 ...
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593 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 ...