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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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Can you connect a 14 gauge electrical wire with a 12 gauge?

In the attached image, the 14 gauge wire coming from the left and into the junction box, is from a gas stove the floor above. The 12 gauge wire coming from the right is connected to the panel and is ...
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1answer
22 views

Do I need special tools to run speaker wire vertically from about light switch heigh to the floor? No fireblocks.

I have some speakers I hope to run wires for from not much higher than switch height for my 7.1 system. I'm thinking I might be able to just drill a hole and use a coat hanger to get it started then ...
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4answers
83 views

What is the smallest and lightest wire I can use?

I currently use a regular 50 foot power cord rated for 15 amps. I use it only for two laptops and one camera, making a draw of about 5 amps at 120 volts, according to the "input" label on the power ...
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2answers
45 views

How can I reliable crimp aluminum ferrules without a specialized tool?

Is there another way to crimp aluminum sleeves without having to buy a $40+ crimping tool that I will only use for this one project? Or at least is there a crimping tool that has another use? I don'...
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2answers
73 views

Are turnbuckles required for cable railing?

I'm installing wire rope for a fence. It would look something like this fence here: . I was thinking of using a hand winch to tighten the rope. So let's say the winch does its job, I crimp the ends, ...
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2answers
57 views

Would I use a reverse thread lag screw swage stud for tensioning cable?

I was watching several videos showing an installation of wire rope for a fence, and the lag screw swage stud on one end would be driven clockwise while the other goes in counterclockwise. That way it ...
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1answer
61 views

What are these called for tightening rope wire?

What are these called for tightening rope wire?
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55 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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50 views

Unusual wiring in ceiling box for installing light

In each room of my new apartment, there are ceiling boxes under circular white plates where presumably you can install ceiling lights since there are none. When I take off the plate and pull out the ...
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2answers
102 views

Was it ever acceptable in the past to use 20A breakers with 14 AWG wire?

Background I recently bought a house which was made in 1965 and which still had the original Bryant outdoor main box and breaker, a subfeed to the original GE subpanel in the garage, and (with a few ...
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3answers
43 views

Correct crimping tool for these sleeves? Are these the correct sleeves?

I recently bought these aluminum sleeves for 3/16" wire, and this crimper tool. They will be used with this 1/8" wire coated to 3/16" I started using it today, and it seems the tool is too small. I ...
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4answers
556 views

Can I use #8 wire in a 15 or 20A circuit?

I have a customer with a detached garage/shed unit that wants to install a few outlets and light fixtures/recessed lighting - common residential use, meaning no heavy power tools, washers/dryers, etc. ...
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3answers
41 views

EMT Conduit Capacity with Mixed Guage

I want to pull two circuits through 1/2" EMT. Three of the wires would be 12AWG and other three 10AWG. I've found a couple of tables that say I can run 5 10AWG or 9 12AWG. Is my mixed gauge set safe? ...
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1answer
125 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 ...
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0answers
47 views

What size and type of wire do I need?

We have a 200 amp service on the pole. We want to run to a subpannel in the house. What size wire do I need to run from a 200amp meter pannel on the exterior pole to the subpannel in the house? The ...
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28 views

60A sub panel located 220' from source…in conduit..what guage al wire to meet ONT Elec code?

I want to wire a 60A subpanel that is 220' from the main source. The wire will be AL and run through a buried conduit.... Must meet Ontario Electrical code
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2answers
141 views

Narrow conduit (old building), need to run 2xhots, 1xneutral

Currently I have two wires running through the conduit: one hot (coming from box), and one hot switched (on/off according to light switch). I would like to convert it to an outlet switch combo (one ...
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1answer
61 views

125amp feed from garage to house, required wire size, PLUS a separate 3-way light switch

I recently built a detached garage with its own 200amp service. I made provisions to run a 125amp circuit from the garage to an addition we are now building on the house. My questions are: What size ...
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2answers
95 views

Is copper clad aluminum wiring safe to use?

During remodeling I have found some copper clad aluminum wire. If I recall correctly is all 12 gauge used for outlets. It is clearly labelled as CU clad aluminum on the jacket of the insulation. I ...
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2answers
92 views

Can stranded wire handle the same high voltage as solid core?

Two 10 AWG wires for an electric fence were cut by the lawn mowers. I read that electric fences have very low amperage. So a 30 A rating is well above the call of duty: 10-2 type UF-B cable with ...
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3answers
111 views

Automatic A-B 240 V switch

My house is 150' long. The breaker box is at one end and the AC units are at the other end. I have a well pump at the same end of the house as the AC units are. I do not want to buy 8 ga uf-b ...
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44 views

Wire adjacent to water line.

In redoing the house I'm working on (to live in) I've finally gotten to the point to start Plumbing. The house has not had running water in at least a couple of years. I was going to replace the ...
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3answers
88 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 ...
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52 views

Touched wires do i need to replace

I was changing out my hot water heater, I had the water main shut off and two breakers for the mester suite apparently there was a third. When i removed the wires from the old so i could cap them they ...
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2answers
65 views

Can I use 18g cord for one light bulb?

I would Like to hang some pendant lights from my ceiling. I want to use this wire. I would only put one bulb (like this) on each length of cord and connect them all to the 12-2 at the ceiling. Is ...
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1answer
30 views

Tighten steel wire across several wood posts

I have several 4" x4" wood posts, with one single piece of steel wire going through each post. Something like this: Is there anything I can use to tighten and secure the wire in each post? The ...
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2answers
131 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 ...
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0answers
126 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 ...
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2answers
106 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 ...
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28 views

How to stick lamp holder to cable?

I recently bought some bulb holders and now I'm wondering how I am supposed to attach them to the wire. I don't want the whole lamp to hang only on the small, exposed power connections inside. In the ...
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1answer
21 views

Nut size of earth stud on a can light

This should be a simple to answer but I am not sure how to phrase it for google. For a standard recessed light (aka can-light) in the US, what is the nut/thread size of the earth stud on the inside ...
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719 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 ...
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3answers
75 views

Capping off a single (large) wire?

I have a five-conductor 2 AWG cable (three phases, neutral, and ground) connected into a 22.5 kVA (i.e., very big and dangerous) power supply. This is being used for research relating to ground faults,...
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1answer
114 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? ...
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3answers
133 views

Staple Through Electrical Wire

I was installing a new bath fan and had it all done. I was cleaning up the wires in the attic and accidentally put a staple through the wire as I was securing it to the lumber. I put some electrical ...
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1answer
67 views

How to Run an Electrical Wire from a Breaker inside the house to the Deck

I just got a deck made at the back of a house in Alberta, Canada. House is wooden with PVC siding on the outside. I do have access in the basement to drill a hole and run a cable outside, but, not ...
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53 views

What's the purpose of a wire from stud to outside?

On a couple of my studs there is a small gauge wire that seems to go through the outside wall to the outdoors (into the flue cavity) as shown in the picture. What is its purpose? This is on the wall ...
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1answer
47 views

Ac Induction or Broken Wire?

I'm making a DIY wall mounted pull-up bar (I'm too tall for the normal kind, and can't fit a commercial wall bar due to a sloped ceiling) and I just mounted the heavy duty brackets I'm using, but I've ...
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3answers
765 views

Are splices required in a junction box?

If I have a conduit with 6 wires (3 separate circuits), and I want them to split at some point, can I send the conduit (A) to a 4-inch square junction box and then send 2 wires to leave the junction ...
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4answers
2k 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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1answer
53 views

Making sense of wire colors and connections

I am having trouble identifying which wires are in my box despite all the colors being quite clear. The voltage drop between: White-Ground= 123.5 Red-Ground= .3 Black-Ground= .3 Black-Red= 0 Black-...
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1answer
43 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 ...
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1answer
22 views

transmission wire amp rating [closed]

I have a cable which has 3 wires, each wire is 7 strands of SWG 22. I need to find the transmission amp rating for this cable. How do I go about it? Thanks
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2answers
52 views

Are Ideal Greenie 30-192P Ground Wire Nuts approved for use with stranded wire?

I looked at page 4 of the UL document here: http://www.idealindustries.ca/media/pdfs/products/ideal_ul_listed_combinations.pdf And I notice that it says you can use up to 4 #12 wires. However, it ...
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1answer
530 views

How to wire C wire to the transformer of HVAC?

How are you all doing? I tried to connect the digital thermostat (Ecobee3) instead of my old honeywell thermostat. The original wiring is below (figure 1) HVAC is located on the ceiling of bathroom ...
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1answer
69 views

One outlet, two hots, one neutral, no power to the other outlets

Here it is my scenario: All 120V outlets. Several outlets and I don't know how they are wired between them. Everything was working, but I decided to replace one outlet that was too old. This outlet ...
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2answers
67 views

Wireless Track Light Switch [closed]

My goal I want to run a single track light rail all across the entire ceiling (about 38ft) in my family room using one junction. My problem I also want the ability to turn off certain light segments, ...
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1answer
80 views

GFCI outlet and breaker

I recently bought a house. In the dinning room, the previous owners added a gfci outlet connected to a gfci breaker. What might they have used this for? I can’t seem to find any relevant case. ...
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1answer
414 views

Wiring 4 gang box

I habe done some renovations in my bedroom/bathroom and while doing so I had to remove the 4 gang box for the lights in my bathroom. Now I'm in the process of hooking the switches back up to the power ...
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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) ...