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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votes
2answers
159 views

Ethernet Gauge Too Small for Patch Panel

I have run into a small issue when upgrading my home network's central hub with a larger switch and a patch panel. While I was able to patch down most of the cables with no issues, one of the cables ...
3
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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 ...
3
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1answer
165 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 ...
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....
2
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3answers
246 views

Hit wire on concrete wall while drilling a hole - problem?

Hit a wire while drilling a hole on a concrete wall. Didn't feel like hitting anything, except there was a short, spark, and tripped the breaker. With the breaker back on, haven't noticed any ...
2
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2answers
244 views

What kind of wire is this?

It's black, with white in the middle, and copper around the white. Any ideas? I have a picture but not sure how to add it...
2
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1answer
107 views

Reading electrical clamp tester higher voltage/amp 400A

A sub panel CH 60AMP 3 Pole breaker keeps tripping. I'd like to test the AMPs on the three wires. My clamp tool measures 7.9A while on the 400A AC setting. That seems awfully low to trip a 60 AMP ...
2
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4answers
951 views

What size wire gauge for 1000ft service run?

Want to run wire 1000 feet under ground from pole to house. Will be using 100 amp service single phase. Would like to know what size gauge of wire should I use.
2
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3answers
5k views

Wire nut several wires together

I need a wire nut large enough so that I can bundle seven 14 gauge neutral wires together. I am trying to splice it so I can connect it to my new smart wifi leviton light switch. I don't know which ...
2
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2answers
69 views

Removing a switch

I have a light switch that turns on an electrical outlet. I want to remove the light switch completely and leave the electrical outlet always "on". When I turned the power off to the room and ...
2
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1answer
24k views

What kind of wire would i need to carry 20 amps 100 feet underground

Have an existing underground circuit that goes from the house to the end of the back yard. It's about 40 years old, and I have no idea what shape the wire is in, but it still works. I'm thinking about ...
2
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2answers
3k views

Are these wires dangerous?

I pulled on a cord for the light switch hanging from the ceiling in my bathroom and some plastic and metal casing fell off. This is the result. I know nothing about electronics - these look like ...
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?
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 ...
2
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2answers
415 views

TV cables getting stuck in conduit after mounting TV on fireplace

We are first time home owners and trying to learn basic things. We mounted our TV ourselves yesterday. I'm now trying to hide the wires. There is already a rugged conduit (something like this) behind ...
2
votes
1answer
79 views

What is the service wire sizing based off of on a temporay power pole?

I know how to use the wire sizing tables, but I'm unclear on how to size wire before a breaker, and when the panel has no main breaker. For example, If I have a temp power service panel that is rated ...
2
votes
1answer
81 views

How to replace AC/DC adapter but keep old connector

I have an AC/DC adapter I need to replace for my dehumidifier. The whole system is no longer working, and I am confident the problem is with the adapter. Finding the correct adapter is easy enough; ...
2
votes
1answer
50 views

two appliances on one 220 breaker?

I am trying to install a dryer at the far end of a large house. There is already a 220 circuit on a designated circuit running back there to operate a hot tub. The breaker box is full so no room to ...
2
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2answers
335 views

Kenmore Elite Refrigerator Door Pinched / Broken Wires

TLDR; What is the best way to splice wires together that will be moving? I purchased a Kenmore Elite 106.51773510 refrigerator in March 2017. I had a few issues with the ice maker during my first ...
2
votes
1answer
279 views

Safe to mix wire gauges when installing dimmer switch?

I've purchased a Lutron dimmer switch (DVWCL-153PH-WH) to install for ceiling mounted LED lighting. The wires for the current switch are 12 gauge with a 20A circuit breaker while the dimmer switch ...
2
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3answers
1k views

I have 10/3 wire. Can I replace my 3 prong outlet with 4 prong for a dryer?

In my house there was a 3-prong outlet for the dryer and when I opened it I saw that there is 4 wires and the ground and neutral are on the same terminal. Can I change the outlet to a 4 prong? The hot ...
2
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3answers
256 views

What's this wiring contraption in my closet?

I recently moved into an old apartment and found this contraption in a closet, with wiring going in different directions around the door frame. Some of the wires are cut in places mid-wall and have ...
2
votes
1answer
2k views

Can I leave ports open on push-in type wire connectors?

I will eventually have 7 ground wires, and then another 7 neutral wires to connect each. (obviously I'm not connecting ground wire to neutral wires). I plan on installing leviton smart light switches. ...
2
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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. ...
2
votes
1answer
8k views

Is it possible to do two 3way switched circuits that share a common power source but the power source and the light wire are in the same box?

I'm trying to connect two separate circuits from a single power source using 3way switches. My trouble seems that my wire from my light and my power source are in the same box. Is there a way to do ...
2
votes
1answer
786 views

Proper way to protect wires into top of surface-mounted electrical panel

What are the Code requirements for protecting wires going into the top of a surface mounted electrical panel? Do the wires need to be in a conduit from the top of the panel into the ceiling above? ...
2
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2answers
232 views

How can I tell if a contractor is trying to scam me by charging more after starting a job?

I have a remodeling project for about $2,500 and I have already signed the contract. When the contractor was making a new door on the wall he found a wire inside the wall. Now he is asking for an ...
2
votes
2answers
258 views

Do wires and electical boxes need to be protected on the un-finished side of basement?

I'm considering drywall cover some part of the wood frame on the unfinished side of the basement. The wires and electrical boxes are exposed as in the picture. Not sure if it is necessary. I would ...
2
votes
1answer
263 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 ...
2
votes
2answers
82 views

Main service panel wiring

I'm installing a new dedicated 20 amp circuit for an existing bathroom (new fixture). NEC recommends 12 AWG wiring. But ALL the wires (regardless of amperage) in the main service panel are a much ...
2
votes
1answer
1k views

What does happen when a wire is run close to its maximum “calculated” current?

Disclaimer: I'm in Brazil. Although we do have electrical standards, building code is almost non-existant. According to our standard (and some other sources since I've found it) the following apply ...
2
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2answers
8k 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 ...
2
votes
3answers
5k 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 ...
2
votes
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 ...
2
votes
0answers
356 views

C-wire on Weil-McLain CGA Series 2

I have an old thermostat with only 2 wires connected to my Weil-McLain CGA Series 2 boiler. I would like to replace it with a Nest thermostat. I need to add a C-Wire in order for it to work. Luckily, ...
2
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0answers
1k views

How do you release the wires from this Slater push-in connector?

I know you are supposed to be able to push a screwdriver into a slot "under" the wire, but this old (late '70s?) Slater light switch has different slots than I see in all the examples. They are more ...
1
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2answers
812 views

AC: Powering a 25 amp appliance from 2x20 amp breakers

I want to use a 25 amp appliance but only have 20 amp breakers. Work around I am thinking of hot wiring the output of 2x20 amp breakers so that the 25A load is distributed between 2 breakers instead ...
1
vote
3answers
140 views

What is this thing for?

I've been shopping for houses and found this gadget in the garage. It's up near the ceiling and I don't know what it is for. There's nothing nearby that would give any hints. My image is ...
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2answers
126 views

What are wire rope thimbles for?

What are wire rope thimbles for? Will the wire rope strength be compromised if I don't use them? They will be used on a fence. Thanks.
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4answers
1k views

Can I connect 12 gauge wire to 18 gauge wire for an outdoor light post and plug?

I am replacing a front yard light post that has a GFCI outlet attatched. The old post has 12 gauge wire connected from the house thru the post and outlet to the the light. The new post is prewired ...
1
vote
2answers
89 views

Voltage/current stabilizing

I am running a wire 300+ feet. I'll need to place a transformer every 100 feet that would maintain voltage/current, therefore I wouldn't get any drop so that I can maintain 110vac 20 amp. Which ...
1
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1answer
835 views

Attaching Three Copper Wires Together Without Using A Wire Nut?

I am trying to splice a third copper wire to two currently present wires inside the electrical box of my switch I am trying to replace. Most resources online are telling me to use a wire nut to attach ...
1
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4answers
6k views

Why is the neutral conductor sometimes undersized in AC applications?

Why are electricians allowed to sometimes lower the size of the grounded (neutral) conductor? If alternating current is bidirectional then wouldn't the neutral technically be an ungrounded (hot) ...
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2answers
345 views

Help with Wire Nut sizes [closed]

I need two sizes of wire nuts but I can't find anything that specify the work/wire load that I need. Plus I wanna swap out my backstab/push in connectors with Wire nuts cause people saying it's not ...
1
vote
1answer
966 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
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2answers
403 views

Should the ground lug be bonded in my sub-panel?

I have 200 amp service at the house. I want to install a DP 60 amp breaker in that panel and run # 6 wire approximately 150 feet (10% added for swag) overhead to a dog rescue building. The building ...
1
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4answers
17k views

How can I know if I damaged any electrical wire while drilling a hole in my wall?

I have a relatively new house (built 2014) with circuit breakers etc. I just drilled a couple of holes at around the same level as the electrical outlets and I put 1 5/8 inch screws in them. I ...
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2answers
67 views

Wire with mysterious power

I am currently swapping out my switches with smart switches and one of the switches had different wire setup from the usual. Prior to taking out the switch I took picture of the "primary switch" I ...
1
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1answer
76 views

Wire Gauge of Stranded Wire

Is the wire gauge the same for solid and stranded wire? I need to check the wire gauge of some stranded wire. Can I use standard wire strippers to check the gauge of stranded wire?
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2answers
3k views

Why neutral wire connected to load wire?

I opened switch box in the basement that has two switches: one for basement and other 3way switch for stairs. I wonder why white wire thet usually neutral connected to black wire that goes to another ...