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2
votes
2answers
91 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 ...
0
votes
1answer
22 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) ...
0
votes
1answer
42 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 ...
1
vote
2answers
67 views

Can I use flux core wire in a MIG welder that was designed to use argon gas?

My friend gave me a MIG welder that has normal wire with the Gas attachment. I was trying to get argon gas cylinder but had more trouble then expected. Now I'm thinking of just buying flux core wire ...
0
votes
0answers
30 views

C Wire is there, now where do I connect it?

So I'm purchasing a home but the thermostat is pretty old. I'd like to replace it with a Nest or something nicer. I've searched and searched but can't find where I would connect the C-Wire (it's ...
1
vote
3answers
612 views

How do I install a ceiling fan remote?

I am trying to replace a busted hunter ceiling fan remote. The transmitor unit from the old remote had 5 wires - live and neutral, and then 1 that was labeled "fan out", 1 that was labeled "light ...
1
vote
1answer
116 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?
2
votes
1answer
56 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 ...
0
votes
1answer
11 views

Dural lamp ballast for one lamp?

After replaced my lamp ballast, I smelled the smoke but the ballast and lamp should be correct after consulted Home Depo specialist. My new ballast could support 1 or 2 lamps, but I only use one lamp ...
1
vote
2answers
44 views

Why “W” (heat contactor) and “E” Aux Heat connected in Thermostat

I'm trying to update my thermostat to one that has a scheduling feature. My plan is to just copy how it was hooked up in an old 129N Thermostat from Armstrong however, I can't figure out why the "W" ...
1
vote
0answers
11 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 ...
5
votes
2answers
139 views

How can I secure NM cable to a metal stud?

I use NM staples to secure NM cable to wood studs but I am unfamiliar with the options to secure NM cable directly to metal studs despite trying a number of different search terms. Would it be okay to ...
1
vote
2answers
5k views

How can I remove the wires from this lamp holder?

The wire on my lamp is too short, so I'm trying to replace it. The fitting/fixture (what's the correct term?) however doesn't play nice: I can't see the correct way to remove the old wire (and still ...
0
votes
1answer
40 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 ...
0
votes
2answers
8k 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 ...
4
votes
1answer
155 views

Do I need to derate wire ampacity for two or more sets of wires in the same raceway for subpanel wiring?

I was 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 ...
5
votes
2answers
503 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 ...
6
votes
4answers
11k views

Is it safe to install a three pronged wire into a four pronged dryer?

I just moved into an old home that has a three pronged wall jack as shown below: I have a newer dryer that has a four pronged wire. Please see the back of the dryer, I've removed the four pronged ...
0
votes
0answers
50 views

electric box has blue,black, and white wires?

Trying to install a ceiling fan. The house electric box has a blue wire, black wire, and white wire. Using a volt meter i have determined the blue wire has 80v, the black has 9v. what the heck is ...
0
votes
1answer
100 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 ...
1
vote
1answer
33 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
votes
7answers
21k views

How should I wire for a security system during construction?

I would like to run wires in anticipation of a future hard-wired security system. However, I have yet to find any information that pulls everything together regarding what is required. From what I ...
2
votes
1answer
811 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 ...
0
votes
2answers
35 views

Type of wire to be used for alarm system [closed]

I am putting new metal siding on a building that needs to be extremely secure. I am planning on running wire up and down the building before the siding goes up. This is so if someone tries to cut ...
1
vote
1answer
1k 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 ...
1
vote
1answer
214 views

What size breaker and wire do I need to feed a panel for a tankless water heater?

I purchased a electric tankless water heater and I would like to know the following? The unit requires 3 separate 40 amp breakers, one for each line. I have 200 amp service. The subpanel will be ...
0
votes
0answers
75 views

How to prove there is presence of electricity leakage?

Recently just moved to a new place that is above higher ground. I found that my joint crack more often and tingling feeling like there is energy running all over my body. It feels like there are ...
0
votes
1answer
91 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 ...
4
votes
6answers
541 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 ...
4
votes
2answers
5k views

What type of wire should I use to feed a 70 ampere subpanel?

Finishing a basement and I need to add a subpanel. Main panel is outside. Subpanel will be in the basement. 70 Amp breaker in the main to feed the subpanel. I was thinking THHN but would this mean ...
0
votes
2answers
73 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... ...
2
votes
1answer
5k views

Why doesn't my motion sensor light work?

I want to install a simple motion sensor (Lutron Maestro MS-OPS2) on a single pole switch in my garage. When I installed it the light would not turn off. The instructions (PDF) that come with the ...
6
votes
2answers
578 views

What is this lamp base wire clip and how do I remove the wire without breaking the clip?

I'm trying to replace the socket in an old desk lamp, and I need to pull the wire through. However, the wire is secured tightly by a black plastic clip at the base. I'm wondering what this clip is ...
1
vote
1answer
321 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 ...
0
votes
2answers
422 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 ...
0
votes
2answers
311 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 ...
4
votes
1answer
339 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 ...
0
votes
1answer
160 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, ...
0
votes
1answer
77 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 ...
2
votes
2answers
679 views

Where's the C terminal on my boiler control?

The new thermostat I purchased doesn't run on batteries, and needs 24 volt power. I have only a red and a white wire connected between the boiler and the thermostat, but there is also a third, unused ...
10
votes
3answers
20k 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 ...
0
votes
2answers
117 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
votes
1answer
145 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 ...
1
vote
1answer
41 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
votes
3answers
3k 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?
0
votes
0answers
22 views

Need to run a “C” wire to thermostat but control board has no “C” [duplicate]

I am looking to replace a thermostat with one that needs a C wire... which my current thermostat does not. I have some extra wires in the thermostat wiring that are unused... so I went down to the ...
0
votes
2answers
68 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 ...
1
vote
1answer
334 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
votes
1answer
2k 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?
4
votes
4answers
3k 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 ...