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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votes
4answers
5k views

Mysterious cord running from wall. Safe?

My wife and I are preparing to sell our home and are discovering some weird things. Our home was built in 1958, so it is older. We found this in a corner that had some furniture in front of it. We ...
3
votes
1answer
612 views

Low voltage circuits inside mains conduit

I have a situation (USA) where there's no practical alternative except run some low voltage wiring in the same conduit as 120/240V power. The good news is, my situation calls for using entirely ...
10
votes
2answers
5k 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 ...
2
votes
3answers
2k 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 ...
3
votes
6answers
23k views

AC Voltage on Coaxial Cable (Cable TV)

I have an issue with my cable box (with DVR). Every morning it displays the word "Boot". I have to reboot it in order to restore cable service. I called the cable company (Comcast) and they came ...
2
votes
1answer
534 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 ...
2
votes
2answers
1k 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 ...
2
votes
1answer
3k 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 ...
1
vote
2answers
2k 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 so ...