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 cameras, security systems, etc.

However, I don't intend to actually wire these devices for quite some time -- I just want to put the wiring in the walls before the drywall is put up. When I put the equipment in later, I'll retrieve the wires behind the drywall.

My question is: What is the best way to do this? If I don't have a low voltage box that I'm running the wiring to, how do I keep a few feet of cable coiled up behind the wall that is:

a) easy to access later,

b) up to code, and

c) makes sense to other people working on the house why it's...

0 0

Thank you, guys.

I wanted to make sure I'm interpreting 800.133(A)(2) correctly. This section says that I need to separate data wiring and power cables by at least 2 in. However, it also provides an exception:

(2) Other Applications. Communications wires and cables shall be separated at least 2 in. (50.8 mm) from conductors of any electric light, power, Class 1, nonpower-limited fire alarm, or medium power network-powered broadband communications circuits.

Exception No. 1: Where either (1) all of the conductors of the electric light, power, Class 1, nonpowerlimited fire alarm, and medium power network-powered broadband communications circuits are in a raceway or in metal-sheathed, metal-clad, non-metallic-sheathed, Type AC, or Type UF cables, or (2) all of the conductors of communications circuits are encased in a raceway.

Basically, I have CMR data cables and Romex for power/lighting. I'm assuming that romex qualifies as non-metallic-sheathed, and...

0 0


Speakers placed around a room sound great, but all that wire can be an eyesore, an annoyance when you vacuum, even a tripping hazard. You may be able to keep low-voltage wires out of sight and out of your path simply by running them under rugs and behind furniture. If not, here are some solutions for hiding speaker wire—or just about any other type of low-voltage wiring (for phones, thermostats, doorbells, low-voltage lighting, etc.).

Install plastic raceways

Install plastic raceways

Plastic raceways are a low-impact way to run wires along trim.

Raceway parts

You'll need these parts to install plastic raceways.

Raceways come in a range of sizes and shapes, are paintable and often have an adhesive backing for quick installation. You'll hardly notice a narrow version like the one shown here if it runs along the top of baseboard. Raceways are a lot more noticeable when they run up walls or around doorways, though. Whether...

0 0

One of the best reasons for mounting your new flat panel TV on the wall is the sleek and stylish look that it gives the entire room. Just look at how it complements our fireplace. What’s not so sleek and stylish, however, are all the cords and cables dangling from below the TV, running across the mantle and down the wall. What an eyesore. To hide them, we’re going to run these wires through the wall and up to a point behind the TV where they will be out of sight, hidden from our view.

Today, in this first of a two-part series on wiring a wall-mounted flat panel TV, we’re going to tie into an existing electrical outlet and run new electrical wire and TV cables up through the wall. Then we’ll make a 90-degree turn and route the wiring through several studs before we reach our destination behind the TV. In the next video, we’ll install an electrical box and receptacles and connect the wires and cables. Now before we begin, if you have any hesitation about working with...

0 0

Don McConaghy, Leviton Telcom

Installer Tips


Workers new to the field frequently assume that low-voltage cabling does not present a shock hazard. A 50- to 60-volt direct current (DC) is normally present on an idle tip-and-ring pair. Sometimes a ringing current of 90V alternating current (AC) is present and, under certain circumstances, can deliver an electrical shock. Many accidents have occurred because of improper or careless handling of such cabling and failure to observe proper safety procedures.


Always assume that hazardous voltages exist in any wiring system. A safety check, using a known and reliable voltage measuring or detection device, should be made immediately before work begins and whenever work resumes. There are other important safety rules for avoiding electrical shock, some of which are included here.


1) Always use insulated tools and avoid all contact with bare terminals and grounded...

0 0

An easy way to use lights designed to be used in low voltage wire systems as a wall mounted light.

Since I built this some time ago, I have no step-by -step pictures, but I think...

0 0

Whether you’re a contractor, building manager or homeowner, it is important to keep Class 2 compliance in mind when retrofitting or creating new construction with low voltage LED lights and systems. The National Electric Code (NEC) requires that low voltage power supplies and electrical wiring be Class 2 compliant. Low voltage lighting generates far less heat compared with high voltage lighting and saves money on your power bill, but there is still electricity involved. The code was created to prevent electrical fires and shock.

In this article, we walk you through all of the steps necessary to make sure your project is Class 2 compliant and ready to pass inspection so you can enjoy the benefits of LED lighting and its energy savings.

Inspections: Who needs them and how they work

If you are creating new construction or adding major modifications, you will most likely require an inspection. New construction requires a work permit that must be obtained...

0 0

Hanging shelves through drywall or wooden paneling seems easy enough. Drill a hole, insert a screw anchor if going through drywall, and screw in a shelf bracket. But it's important to know what is behind the wall you are drilling into. There may be electrical wires behind the wall that your drill can come into contact with that can be severed, or worse, give you a nasty shock. Before drilling, find out exactly where the wiring is.

Place the stud finder with wire tracing mode onto the wall. These are available at hardware stores and home and garden shops. Flip the switch on the stud finder to "AC" mode.

Move the finder along the wall, front towards you and the flat side against the wall. Some will have a small meter that will begin to show voltage as the stud finder gets close, others will have several lights that begin to light up.

Move the stud finder over the electrical wires. On metered finders, when they are exactly over the wire, the meter will read 120...

0 0

Whether you’re a contractor or building manager, it is important to keep Class 2 compliance in mind when retrofitting or creating new construction with low voltage LED lights and systems. The National Electric Code (NEC) requires that low voltage power supplies and electrical wiring be Class 2 compliant. The code was created to prevent electrical fires and shock.

Inspections: Who needs them and how they work

If you are creating new construction or adding major modifications, you will most likely require an inspection. New construction requires a work permit that must be obtained from a local safety or electrical inspector. Some small jobs may not require a permit but it is in your best interest to get a safety inspection to avoid any unintended problems. For example, if you re-wire a kitchen or basement without having it inspected and then try to sell the house, an inspector may ask you to tear the walls down to check the wiring. Also, if faulty wiring that...

0 0

Mounting your TV to your wall makes it look great, frees up space and gives you a great view. The wires that hang down, however, look pretty ghetto. Here’s an explanation of how to hide those wires in the walls for only $10.

Caveat 1: This installation assumes you have mostly hollow walls behind and underneath your television. If you’re mounting the TV on an exterior wall, a wall with a fire block, a brick wall or other types of walls that present challenges, extra work will be required.

Caveat 2: In many areas, local code requires that high voltage wiring be installed, not fished through the wall. A separate electrical outlet should be installed behind the TV. To learn how to do this, see my video on adding an electrical outlet for your wall mounted TV.

OK, with that out of the way, let’s get started.

Tools Required: For this job, all you’ll need is

A tape measure Utility knife (or drywall jab saw) Stud Finder Screwdriver (2) Low Voltage Recessed...
0 0

One of the most effective ways to improve your curb appeal is to add low voltage outdoor lighting. Not only does it give your house a high end look on the outside, it also makes your room look larger from the inside once the sun goes down. How? Lighting the outdoor spaces creates a visual extension to your indoor space at night, like adding additional rooms. And lets face it, if you spend any time in the yard after dark, lighting changes everything. A lit landscape under the stars gives your home and garden a resort feel. (Been to Disneyworld? Lighting is everything!) And you can do this yourself! Follow along with our tutorial on how we did this, and learn how to install low voltage lighting to enhance your home’s exterior. Make your outdoor space as special as your indoor space!

Start at a landscape supply or home improvement store to buy everything you will need to install your lights.

First step : Plan out your lighting layout. Use a diagram or layout the...

0 0

Locating live wires behind walls is easy with the sensitive, noncontact voltage detectors that are available at home-improvement and hardware stores. They're relatively inexpensive and they can save you hours of work and hundreds of dollars in material. These probes will detect hot wires behind 2-inch finished walls. Professional electricians carry them to double check a circuit that their expensive digital meters tell them are safe to work on.

Locate your circuit breaker panel or fuse box and check to see what type of wiring system is being used. This will determine which instrument you use to trace the hidden wires. A noncontact voltage probe won't work with armoured cable, which you may well encounter in residential wiring. The probe will indicate the presence of voltage at the receptacle or switch but will lose the signal when you move away from the cover. A two-piece circuit breaker tracer will work with all wiring systems. If you can only afford one or the other, go...

0 0

Advertisement - Continue Reading Below

Landscape lighting describes a large and varied family of outdoor lighting fixtures. These versatile, weatherproof lights can be used to illuminate pathways, flower beds, trees, fences, driveways, stone walls, doorways, and more.

Some landscape lighting systems operate on "line voltage," the 120-volt current from your house. For DIY installation, though, we highly recommend low-voltage systems that operate on just 12 volts. They're less expensive, easier to install, safer, and use less energy.

Key Components

There are dozens of low-voltage lighting fixtures and accessories available in a variety of styles, sizes, colors, and finishes. Nearly every system, regardless of its complexity, is composed of four basic parts.

Transformer: The power behind every low-voltage system is the transformer. It plugs into a GFCI-protected outdoor electrical outlet and steps down the house current from 120 volts to 12 volts....

0 0

See the VacPartsWarehouse Central Vac Parts Page

We love our Central Vacuums. One of the best home cleaning solutions ever created. Not only are these machines easy to use, but they’re more effective about keeping your home allergen and indoor pollutant free. But when your machine is having issues, sometimes it’s hard to diagnose exactly what’s wrong.

See some of these common problems and solutions below. As always, if you have any questions, we’re happy to help. Contact us here and we’ll get back to you a.s.a.p.

Click here to go right to the solution you need:

Central Vacuum Clogs
Possible Bad Inlet Valve
Split Central Vac Wiring
Clogged Vacuum Hose
Leaking Central Vac Piping
Bad Suction at Power Unit
Power Unit Electrical Issues
Contact Us For Help

Central Vacuum Clogs

#1 – Clog between inlet 1 and rest of system
A. Isolate exactly where clog is – by running 1” Styrofoam balls (each...

0 0


What kind of power supply is needed?
A plug in or remote mounted power supply can be ordered for this fixture. They come in 60W and 100W variations, both plug-in and remote mount.
Can this be dimmed?
Yes, they can be dimmed to 1% with an (ELV) electronic low voltage dimmer.
Can I connect two fixtures end to end?
Yes, each LED Strip Light comes with an I-Connector which allows end to end connection without increasing the length in between the fixtures. You can also purchase a joiner cable for increased length in connection.
Are these available in both Warm White and Cool White?
Yes, the LED Strip Lights are now available in both Warm White, 2700K and Cool White, 4500K.
What are the mounting angles available for the LED Strip Light? Are they included?
2 flat mounting clips and 2 corner mounting tips are included with LED Strip Light. Adjustable angle mounting clip...
0 0

You can use a range of tools to trace electrical wiring in your walls, and some of the tools you already have might help you in your project, too. One such tool is a stud finder. A magnetic stud finder detects the metal nails in the wall studs. An electronic stud finder produces a small electrical field, which changes when it reaches a denser region of the wall -- like the area over a stud. The stud finder's circuitry detects this change and lets you know with a light or a sound [source: Berendsohn]. Some electronic stud finders also have the ability to detect wires behind walls.

Voltage detectors are helpful once you find your wires -- they let you test whether the wires are live. A neon-bulb version, also known as a neon circuit tester, is an inexpensive tool used for the purpose of detecting voltage. Another option is an audible alarm voltage detector. These are also known as tone generators and probes or tone and probe kits. Tone generators make sound when they find a...

0 0

spencer or others

did i read this correctlty - that I can use 14/2 wire on the load side of the transformer to supply low voltage lights?

the reason I ask is that I thought my electricians wired my kitchen and butler pantry above cabinet wiring incorrectly - but maybe it is ok.

For the above cabinet lights - they have a switch leg coming out of the wall - not in a box. From that location - they daisy chained the circuit to 3 other locations where sections of cabinets are located. Is it possible to use the 110V switch leg to drive a transformer (located at the top of the cabinet) and then use the other 14/2 wire on the load side of the trasnformer to carry low volatge - 12 or 24 volts? If that is so - that would be wonderful.

They did use low voltage cable for my under cabinet low voltage lights. This cable is black - at least 14 guage 2 conductor stranded wire. They ran 4 of these cable lengths from a central location to where the cabinet sgements will...

0 0

–Check local regulations for restrictions and permit requirements before beginning electrical work–

This page contains wiring diagrams for most household receptacle you will encounter including grounded and ungrounded duplex outlets, ground fault circuit interrupters (GFCI) as well as 20amp, 30amp and 50amp receptacles for 120 volt and 240 volt circuits.

Grounded Duplex Receptacle

This is the standard 15 amp 120 volt wall receptacle outlet wiring diagram. This is a polarized device. The long slot on the left is the neutral contact and the short slot is the hot contact. A grounded contact at the bottom, center is crescent shaped. Don't use this receptacle when no ground wire is available.

This receptacle can typically be found in living room and bedroom wall outlets. One of these may be controlled with a switch and/or wired to other receptacles in the circuit. For a 15 amp receptacle like this, 14/2 cable with ground should be used to feed the...

0 0

In this video, This Old House landscape contractor Roger Cook and Mark Piantedosi install landscape lighting for a front walkway.

1. Mount the 120-volt transformer to the house wall, preferably behind a shrub to make the transformer less noticeable.
2. Stretch the low-voltage cable from the transformer to each light fixture.
3. Install a ground stake onto the stem (shaft) of each light fixture.
4. Strip the ends of the cable and fixture wires, then twist them together to make two connections.
5. Slide brass connectors over each wire connection, then tighten the connector with a hex-key wrench.
6. To ensure watertight connections, slip heat-treated tubing over the brass connectors, then use a propane torch to seal the tubing.
7. Push the sealed wire connections up into the hollow stem of the light fixture.
8. Firmly push the light fixture's stake deep into the ground.
9. Use square-blade shovel to cut a narrow trench from...

0 0