Questions tagged [wire]

Questions about wires, usually seen in electrical applications. Questions with this tag are typically about sizing wires appropriately for the projected usage, but could also be about properties of or problems with a wire.

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487 views

NEC Breaker Selection for Motor Loads

In the case of motor loads connected to a long branch circuit, why does NEC Table 430.52 limit selection of an over current protection device (OCPD) to a smaller size than the branch conductor will ...
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4answers
83k views

Do I really have to fasten interior-wall electrical wire to a stud to keep it from moving?

I am fresh out of cable staples and would rather not go all the way to Lowe's just to get a box. What are the implications of not fastening loose electrical wires to a stud? It's not like there's ...
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1answer
426 views

Burnt sheathing behind outlet

I heard buzzing and popping noises behind this kitchen outlet so I opened it up and it looks like this: What might've caused this? And to repair this, do I have to cut up the drywall and replace the ...
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3answers
169 views

Muting PC audio when doorbell rings

So the setup is as follows. I've got one of those wireless doorbells in which the button is powered by a 9V battery and is stickied to the door and the sound comes from a speaker plugged in a wall ...
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2answers
158 views

Where should I connect the C wire in my furnace, trying to upgrade my thremostat?

I am upgrading my thermostat to a Honeywell Wifi one, and would like to add a common wire. My current furnace controller has 3 blue wires at the 24 v end of the transformer. Which of these (blue) ...
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1answer
140 views

1mm² wire load capacity

I have used a 1mm² wire to power my refrigerator and my ro water purifier? My electrician had set that up and he told me that he is using a 1.5mm² wire! so is 1mm² wire ok to power up my refrigerator ...
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2answers
3k views

How Do I Connect 00 AWG Wire to a 100A breaker?

I'm hooking a 100A service panel to my meter pan. There is the 100A disconnect panel on the right side that feeds the little house, I'm installing another panel on the left side to service my barn, an ...
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2answers
3k views

How should I apply ambient air temperature ampacity correction factors when exact temperature is unknown?

Is there a good method or rule of thumb for determining ambient air temperature for wire runs through non-climate controlled areas in residential applications (e.g. attics -- I've read literature from ...
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0answers
373 views

Electric service wire size

I have to put in a new service wire I was Given service wire that was told was ok. they said it was 4/0 aluminum. I looked at the jacket and it said, 3 cdr awg 2 compact al. aluminaflex. I am putting ...
3
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2answers
5k views

NEC Definition of “Maintained Spacing” for Wire in Free Air

This seems like a simple question, but I cannot seem to find the answer in the 2008 NEC. There are references to "maintaining spacing" in many sections of the code such as the following: 310.15.B....
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1answer
170 views

Can I use #16 duplex wire extension to a 2800 watt chop-off cutter?

Is it possible to use #16 wire as extension wire for 2800 watt cut-off machine?
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1answer
261 views

How do I separate these wires?

My ceiling fan stopped working and I want to remove the light box from the fan so that I can replace an in-line fuse holder. In order to separate the light box from the fan rotation device, I need to ...
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0answers
13 views

How to add extra 24VAC wire (C wire) [duplicate]

I have recently bought a Honeywell rth9580 programmable WiFi thermostat. Unfortunately I have old electric heating/cooling system probably from 70's. The system is based on two relays (I guess ...
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1answer
847 views

Old Wiring to New Light Fixture With Switch

I bought a new light fixture to replace an old outdated light-bar the bathroom of my apartment. The building was constructed in 1926 so everything is super old. When I took the old fixture down, I ...
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2answers
62k views

Is ceiling fan missing grounding wire from the ceiling box, and is this safe?

I recently had a contractor/handyman install a Hunter ceiling fan for me. It worked great, but my wife came home and thought it was too big. I ordered a different Hunter fan, and figured I could ...
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2answers
20k views

Do metal junction boxes used solely as pull boxes need to be grounded?

I am planning to pull three sets of four conductors (3 AWG wire) through 2" EMT conduit for a 30' length that is common to all three sets of wires, and then branch off at a listed metal junction box (...
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1answer
939 views

Installing new ceiling fan. Don't think there is a white (neutral) wire

I purchased a new ceiling fan with a remote and installed it. I had three wires coming out of the plastic box in the ceiling. Black, bare and red or white. The reason I am not sure if the wire is red ...
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1answer
85 views

Correct gauge of wire to power 2 ceiling lightnings

I was attempting a simple home improvement project that has slowly become a bigger job than I expected. So my aunt had a light bulb hanging from the ceiling in the corridor and wanted it replaced ...
5
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1answer
15k views

What are these wires I found in my yard?

I was digging the holes for some crepe myrtle saplings and I sliced into a wire with one unlucky shovel stroke. They do not seem to be carrying any voltage, but I haven't hooked my multi-meter up to ...
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1answer
3k views

Should I run cable through an always damp crawl space or a dry soffit in the living area?

You guys are one of the best electrical help web-communities, so thanks for your time and efforts! I am advising some homeowners who need to rewire their first floor on Long Beach Island, NJ after ...
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1answer
134 views

Electric line to subpanel

I'm running 2 100 amp 110 lines 35 yards from my well house main to a sub panel in my garage. Do I need to run a ground wire and a neutral wire or can I just run one of them from the sub panel to a ...
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6answers
4k views

What can I use to lubricate CAT6 cables while installing them?

I am about to run some network wires inside the wall at home. I had already done so but apparently too much pressure on them while pulling caused one of the pairs to go bad and therefore prevent ...
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2answers
101 views

How should I hook up this phone jack?

By accident I pulled the little outlet out of the wall and the wires came out. I remember the electric guy once did it, and put only these 2 wires in, but somehow i'm not getting any phone signal... ...
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1answer
2k views

What size wire to use from house to wood shop?

What type/size of wire should I use for running power from the 200Amp service panel at my house to a subpanel at my wood shop? The length of the run is 300 feet. I need 220V service at the shop and ...
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2answers
6k views

What type and size conductors and conduit should I use to feed a detached workshop?

I'm planning to install a 100 amp sub panel in a new detached workshop in my backyard. I will run power from my home main 200 amp service panel which I have a dedicated 120/240v double pole 100 amp ...
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2answers
4k views

Can you add a cable connector in knockouts in a breaker box after the wires are already in place?

A sub-panel has a cable of three 12 gauge wires for HVAC coming into the box through a big knock out hole. The HVAC people did not put a connector on the cable. Is there a connector designed to be ...
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1answer
2k views

Can I use romex in my unfinished, detached garage or should I use MC?

I bought my house with an unfinished detached garage. I will never finish the walls. The previous owner has junction boxes with romex coming out of them and going to the fixtures. I've only seen MC ...
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1answer
533 views

How can I protect a vending machine wire from being cut again? [closed]

A friend of mine operates a vending machine in a school. Oftentimes, there are issues when a snack gets stuck in the machine, the students will rock the machine. Rocking the machine is an issue, ...
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1answer
95 views

Previous tenant did some shoddy DIY, should we be concerned?

Not a typical DIY question, but I was hoping some people here could help us out. The previous tenant did some construction work that seems sketchy at best. (Pics below) http://imgur.com/a/8tIRg He ...
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2answers
164 views

Networking Phones Together in Building

I have a number siemens optipoint 500 economy phones. They have been used in an office environment in which the networking of the phones were managed by a third party. I would now like to use them in ...
3
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1answer
164 views

Can I install wiring in the space used by a sealed air duct and PVC water supply lines?

I have a space between walls that is about 14" deep and 8 foot wide, and goes from the floor to the ceiling. This space is on the second floor. Petty much in the center of the house. The space ...
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1answer
888 views

grounding wire from ceiling with no place to attach to the fixture?

I was took down my parents 45 year old kitchen light fixture to tighten a screw and when i went to put it back up i noticed that there was a grounding wire coming down from the ceiling but no place to ...
5
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3answers
9k views

What gauge wire/cord do I need for these outdoor lamps?

I have two 700 watt outdoor halogen lamps, each connected to a splitter, then back to a power source. Given the distances illustrated below, what gauge cord should I use?
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2answers
108 views

Is it possible to replace my phone wires t network wires in the walls?

In my house I have telephone access point in each room. Is it possible to replace them with network cables? I have tried every option I know to get WIFI signal in my top floor but always getting poor ...
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1answer
2k views

Leaving a hot wire in the wall or ceiling

I am redoing a ceiling fan with new wiring. I have the walls open at the switch box. There is an old knob & tube hot wire coming in and then it goes out to the ceiling fan. I have run new wiring ...
2
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1answer
4k views

Can I use a 20 amp breaker in the situation of having 15 amp wire connected to a 20 amp main wire?

Can I use a 20 amp breaker in the situation of having 15 amp wire connected to a 20 amp main wire? If I can't would using a 15 amp breaker be ok?
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4answers
20k views

How can I fix chewed through wires?

I have two standard two prong wall plugs my puppy has chewed through completely, and he managed to sink his teeth into a laptop cord as well. I'm thinking the wall plugs are history (a lamp and a ...
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1answer
162 views

Which wire is the C wire?

Model: Goodman AWB30-08C Electric AC/Heat I'm hoping someone can help me identify the 24V C wire. Fortunately the thermostat line has a spare wire already run, so I just need to find the C wire in ...
2
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2answers
2k views

Can I use THHN/THWN-2 within a lamp post?

Foreword: I've been using UF wire for about 10 years now, and I've really grown to hate it. It's hard to work with, hard to strip, and hard to pull through conduit. I prefer all my underground wire to ...
3
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1answer
3k views

What is the best way to run underground electrical and low voltage in the same trench?

I'm putting in a couple of new electrical lines for my back yard. I have a trench dug from point A, to B, to C, etc.. I then had a bright idea. Why don't I put speaker wires and CAT6 under ground ...
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1answer
254 views

Should I replace the neutral wire that I accidentally cut in a Romex cable when installing a new outlet?

So I'm installing a new outlet in my home. There's an existing Romex cable that goes up the wall into my attic above the new outlet. When I was stripping the wire to go in the box, I accidentally ...
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1answer
2k views

How do I wire a door bell?

Can anyone make an educated guess on how to wire so the door bell rings? The flat used to have door phone entry system, but it doesn't work anymore. So it is used as normal bell. In flat we had a ...
8
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1answer
16k views

Can I extend an electrical ground wire with a copper wire crimp?

I am working with an electrical socket and I need extra length on the ground wire. It doesn't seem unreasonable that I can attach an extra three inches to the existing one and attach it with a copper ...
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1answer
8k views

Is it possible to splice this garage door safety sensor wire with some other wire?

I currently have these sensors: http://www.amazon.com/Chamberlain-Liftmaster-41A4373A-Safety-Sensors/dp/B00283Q9AW An accident occurred a few days ago and the cable to the receiver was snapped apart....
5
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1answer
941 views

Hangman's Noose vs Uni Knot

Is there any practical difference between the Hangman's Noose and the Uni Knot (a.k.a. Duncan loop)? The difference I see between the two is that the coils are wound inside the loop in the uni knot ...
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2answers
8k views

How do I design the circuit for baseboard heaters?

I am designing the circuit(s) for my basement apartment (cca. 800 sq ft) baseboard heating solution. I am planning to buy Berko HBB Series heaters and distribute them as shown in the below table. ...
3
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1answer
5k views

New light switch has blue, black, and white wires. Wall has black, white, and ground. Can I make it work?

I bought a new light switch that is supposed to allow me to automate my lights easier. Here is what it looks like: It has blue, black, and white wires. Coming out of my wall, however, I only have a ...
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1answer
9k views

Can 22 AWG Solid Copper carry 24 VAC?

I have this irrigation caddy unit, and it requires 24VAC. There's a location outside my house with one ethernet cable and another brown cable with four solid copper wires (black, red, yellow, green). ...
5
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3answers
3k views

How should I label and organize my home electrical circuits?

I am looking to make the wiring updates in my home extremely simple to understand while doing so in a code-approved manner. I cannot find anything against wrapping a thin band of colored electrical ...
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2answers
1k views

How close can speaker wire be to a recessed light before heat is a concern?

I'm currently building a home and have plans to install in-ceiling speakers in my family room when the house is finished. The package that the builder offers is obnoxiously expensive and I can't do it ...