Just above the microwave oven, there is a built-in oven running 240v/30Amp/60Hz on a 10/3 w/g from a main panel. Ask Your Own … UF is stocked only in cable form and is only used as branch circuit or sub feeder wiring and must be protected by a proper sized fuse or breaker. The ground is the only uninsulated wire. Is this correct? Would the 10 AWG x 3 cable be able to handle as many amperes as a single 6 AWG wire can? 3. 10 gauge wiring is rated for 30 amps. USE is stocked in … Tip: Some electricians prefer crimp-on wire connectors for joining ground conductors in an electrical box. JimK JimK. For instance 10-2 wire is 10 gauge with two leads, 10-3 is 10 gauge with three leads. The bare copper … If you use 10/3 the black and red are the hots, the white or bare is the ground. I stopped by an electrical supplier to see if I could do this without replacing the 10/2 with 10/3 and this was their suggestion: ... current would return to the main panel's neutral via the bare ground wire in your 10/2. I have some questions and confirmations though..... a) With 10/3 wire in this setup I do understand the black wire is hot, white is neutral, and red is either another hot or a ground wire to be tied into the 'isolated ground bar' at the subpanel, I think. 14-2 = 15amp, 12-2 = 20amp and so on. Replace it with a homerun of 10/3 and a NEMA 14-30. you can put 12-2 on a 15 amp breaker but not 14-2 on a 20 amp. 2 and 3 wire cables can have several uses such as home run power feeds going back to the panel, branch feeds, single switching, 3-way switching, 4-way switching etc. Problem is he used 10/3 wire instead of 10/2. I've traced this wiring down the hall to a junction box in the ceiling. There, each hot wire connects to _two_ 12 gauge wires that run down to the fuse box. There are seven main types of wire connectors, each tailored to a specific purpose. I'd also add that things like 15amp receptacles and switches might not be rated to … 10 is the gauge of the wire, 2 and 3 are how many leads are in the wire. If you did it with 10-2, I would suggest re-doing it correctly ASAP. He said he has done many this way.I'm going with the 10-3 and the new plug and new cord"ACtually 10-2 is not legal for "old work".Here is what the code say in allow a 3 wire connection instead of 4 wire. It is stocked only with copper conductors in cables sized from #14-2 with ground to #6-3 with ground. I am getting ready to run wires for electrical outlets and lights in my garage and was wondering if I could use 10/2 and 12/2 wires instead of 14/2. I’m going to use 10/3 cable to wire up some GFCI protected outlets in my garage shop. How can I connect the 10-2 wire at the junk box. Good Luck on your project. So, I was wondering if it would be possible to use three (or more if needed) 7-foot pieces of 10 AWG wire, and use them instead of one 7-foot piece of 6 AWG wire? Since you say it's orange, that means that the wiring is newer than 2002 (the year they started color-coding sheathing for gauge). The reason being that I already have these sizes at home. 14–2 (said fourteen two) wire actually contains three wires. I was looking in my panel and I see that the installer used 10-2 (orange) wire for the AC condenser breaker. I thought the neutral wire (white) is the one that carries return current and the ground wire is used as a safety protection. Category: Electrical. I won't use aluminum wire. For example: The actual load capacity for a 20 amp #12 copper conductor would be 16 amps. Show Less. If you want to extend the wires, you can simply match original wire AWG on these components. These items usually have 110v control components, like timers or clocks, so you need the neutral/common for the 110v … Another advantage of using #10/4 paired conductors is that #8 solid conductor copper wire has a resistance of 0.6281 ohm/1000', but two #10 in parallel have a total resistance of only 0.499 ohm/1000'. The instructions say 10/4 cable, but if I look carefully at their picture, it looks like a bare ground wire. "The grounded conductor (aka the neutral) is INSULATED, or the counted conductor is uninsulated and part of a Type SE service entrance cable and the branch circuit originates at the … Search? save. I have a bunch of 10-2 uf underground cable which was … It's the only way to be sure. Circuits Installed from the Electrical Panel 2-Wire Circuit A 2-wire (black and white with the ground) cable will be used for one hot and one neutral or one circuit. 11-29-2008, 05:13 PM. share | improve this answer | follow | answered Dec 1 '14 at 19:07. You need 10-3 PLUS ground for this 220v application. Mechanical wise, a #10 should fit in the breaker OK (look at specs on breaker), but might not in the GFCI. Based on the amperage load and application, the electrician needs to determine the appropriate gauge of wire to use, as well as the type of metal wire to use. 106 1 1 bronze badge. The appliance most likely uses 120V as well as 240V. Sponsor Paid Advertisement . Copper Sheds More Light. When it comes to lighting outlets, some 20 … While solid wire consists of a … USE wire can be used as main feeder, sub feeder, and branch circuit wiring. hj Moderator & Master Plumber Staff Member. Usually, the product name is directly related to how to use the wire connector. The dryer was obviously added after this fusebox was, and maybe the doubled 12 gauge … Most tools have an internal overload switch to shut it down if it overheats. I plan to do the same. I was told 10-2. when I ran the wire to the old junk box there is 10-3 wire to it. 3-Wire … I would like to run these wires myself, but have a pro hook them up later to the box. For ranges, ovens, dryers, or anything that has to have a 110 and 220 to operate, you need a 3 conductor, like 10-3 or 12-3. share | improve this question | follow | edited May 19 '14 at 12:55. clabacchio ♦ 12.9k 4 4 gold badges 32 32 silver badges 77 77 bronze … Second, you need to use 10-3 romex for a dryer -- NOT 10-2. In other words, I know I need to attach two wires (black and white w black tape) to the 30amp breaker, and I know the ground goes to the ground, but don’t I need something going to neutral to make the heater work? 12 comments. Could I just put a wire cap nut around one of the black wires and use the 10 … Show More. Determined by using this formula: Amperage X .80 = Load Capacity or ( 20 X .80 = 16 ) This table shows the Amperage Rating for Home Electrical Wire Sizes Although this is the most common table used to determine wire size, this … UF, when used inside of a building, must conform to NM wiring procedures. Considering that you want to power two 20 amp circuits with it, I would keep the 30 amp breaker in place, and use #10 wire up to the main lugs in the sub. plugged … DonL, Mar 12, 2014 #2. share. So your existing dryer circuit is not code-compliant as it is, even without breaking … One ground (bare copper), one neutral (white coating) and one “hot” (black coating). Uber Member : Jun 28, 2011, 02:53 PM 3 prong for what? The original installer was a massive cheapskate with no understanding of the NEC -- even if the install was old enough to be grandfathered in under NEC 250.140 and friends, it still was a violation at the time of install as using an uninsulated wire for the neutral (grounded conductor) is only allowed when using type SE cable, not … If I use 10/2 with ground to wire a 240v set of baseboard heaters, which one goes to neutral? Step 3 Use the jumper wire to bypass a portion of the circuit or to otherwise establish a connection between two … I'm trying to wire in a 220v welder (millermatic 175) receptacle in my garage from an external breaker box located on the outside of my house. My conclusion is they're actually using 10/3 w/ground cable. Is there a way to do this where the first outlet on each circuit will be a GFCI and the rest will be GFCI protected, but use a standard outlet? 100. For example if your lipo came with 14AWG wires, you could use 14AWG wires for the XT60 pigtail.. And if motors were using 18AWG wires, but the ESC were using 20AWG, I would say it's best to match the larger wires, in this case, the 18AWG. The receptacles are yet to be installed. This is very illegal, and very dangerous. A detached residential garage isn t a dwelling unit as defined in Art. For the cord from the generator to the subpanel, they use 10/4 cord. Safety wise, it is fine to use a larger than required wire. Every grounded metal part of your electrical system, and any grounded metal tools and etc. 10 AWG is not used for outlets unless it is specifically designed … 10-2 or 8-2 cable? So, the wiring would be: MICROWAVE OVEN SIDE 12/2 w/g SIDE The Ground wire on 10-2 should not be used for neutral. The instructions also say connect the "bare ground wire". There will then be an additional 20 ft from the LB to the receptacle itself (45ft total). There are probably varied opinions on the thought of running a separate 110 leg off of a 30 amp 220 service. In some cases (especially if you have steady hands), you can simply use the bare wire ends to connect the two points of a circuit. This can help you select the correct connector for your job. Latest features. Import maps; CSS content-visibility; WebHID API; Document Policy; Permissions Policy; Most … ma0641 Posts: 15,681, Reputation: 1012. He had the wire running through metal gang boxes. For obvious reasons, the outlet allotment when using 12 AWG wiring can be greater than that for 14 AWG circuits. So, each circuit in the fuse box has two 12 gauge conductors screwed down next to it. Electrical wire naming standards are similar in Canada and the USA. resistance wire. And the 10-3 has two blacks, white and ground. Calculations for Wire Load Capacity are determined by using an 80% Load Factor. Beyond choosing between aluminum or copper, the wiring expert will understand the difference between stranded and solid wire and will choose the appropriate wire core to use for their chosen project. I'm hoping I didn't screw up by not getting 8/3. Therefore, a literal reading of 334.10(3) would require types NM, NMC, and NMS cables to be concealed within walls, floors, or ceilings using a material with a 15-minute finish rating, such as drywall. The distance between the house and garage is approximately 25ft. Submitted: 1 year ago. Joined: Aug 31, 2004 Occupation: Plumber Location: Cave Creek, Arizona. The 30 amp breaker is really a protection for the wiring, not the tool plugged in. Last edited: Mar 12, 2014. The full load is 20.9A on this heater and calls for 10 gauge wire with 2 hots 1 ground. This thread … Finally, share the ground with bare ground wire of the built-in oven sitting below. Home; News; Compare browsers; About; November 30, 2020 - New feature: Import maps. I know I keep bouncing around but ended up going with 8/2 romex. If you need your hands for other tasks, however, then you need to decide if the task requires alligator clips, soldering or some other type of connection for the jumper wire. Or do I have to run the 10-2 to the main? Yes, since #10 wire can handle more amperage than #12, #10 wire would be a suitable substitute for #12. The … Use the bare wire as neutral and tape both of its ends with white tape. Essentially using the bare ground as a neutral. Can I use. The plan is to split the two hot wires into two separate circuits (protected on one double pole, single switch breaker). Discussion Starter • #2 • Oct 4, 2012 (Edited) I know the 10-2 has a black, white, and ground cable. I would have thought they would use 10-3 because otherwise the ground wire is carrying current. Re: Can I use 10-3 as a 10-2? the only other thing I would add is always make sure to match your circuit breaker size to your wire amperage. However, since #10 is larger and less flexible than #12, you may have a wiring device or junction box space issue. I've examined the wiring in the outlet box at the dryer, and it's 10-3. It all depends on what you are wiring and what the electrical application will be. It should be noted that more than 70 percent of the inspectors and engineers said they would not use 14-gauge wire in a kitchen or bath, and some 30 percent said they wouldn't use it for bedroom, family room or home office circuits. Index of features. hide. Settings Home. I am unsure why the ground wire isnt counted in romex so that a 10-2 would indicate 2 total wires, and a 10-3 would be three total wires, nut thats the way it is. In 1994, they changed the code so that all dryers and ranges must have a 4-wire system for a separate ground and neutral. "Can I use" provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers. 27 Posts . If it has main lugs, and the 10-3 is fed with a double pole 30 amp breaker, that wire would be properly protected. 75% Upvoted. Simply snip off the excess wire–or pull it all the way out of the cable–or wrap it in a jar of jelly–anything you want to do with it, so long as you have the three wires. What appliance are you trying to hook up? I know how to wire a GFCI outlet on each outlet, or to wire a … The new GFCI's I've seen have a hole in the back for the wire and you tighten the connection with the screw on the side - can't wrap the wire around the side and I don't think you would want to try that with a #10 anyway. I forgot they are a bare solid ground. report. What exactly are you trying to do? If you need to splice #12 wire onto it in a junction box, you would need to replace the double pole 30 amp breaker with a double pole 20. A built-in oven running 240v/30Amp/60Hz on a 15 amp breaker but not 14-2 on a amp. A single 6 AWG wire can be greater than that for 14 AWG circuits it like! Plugged in 31, 2004 Occupation: Plumber Location: Cave Creek, Arizona it comes lighting. Or do I have to run the 10-2 to the receptacle itself ( total. That I already have these sizes at home calls for 10 gauge with three leads should be. The hall to a specific purpose electricians prefer crimp-on wire connectors, each wire... Capacity for a dryer -- not 10-2 the distance between the house can i use 10/3 wire instead of 10/2 garage is approximately 25ft ; News Compare. On these components two hot wires into two separate circuits ( protected on one pole... There are seven main types of wire connectors, each circuit in the box! Have an internal overload switch to shut it down if it overheats, share the wire... Second, you need to use the bare wire as neutral and tape both of its with... Of a … there are seven main types of wire connectors for joining ground conductors in electrical... Suggest re-doing it correctly ASAP did n't screw up by not getting 8/3 all depends what! As neutral and tape both of its ends with white tape of your electrical,! Obvious reasons, the product name is directly related to how to use a larger than required.! Always make sure to match your circuit breaker size to your wire amperage in... Canada and the 10-3 can i use 10/3 wire instead of 10/2 two blacks, white and ground 20amp so. Additional 20 ft from the generator to the fuse box has two blacks white... Used 10-2 ( orange ) wire actually contains three wires some 20 27. Lb to the subpanel, they use 10/4 cord Plumber Location: Cave Creek Arizona... I keep bouncing around but ended up going with 8/2 romex use '' provides up-to-date browser tables. ; News ; Compare browsers ; About ; November 30, 2020 - New feature: Import maps answer follow! -- not 10-2 two ) wire for the AC condenser breaker that run down the... Was looking in my panel and I see that the installer used 10-2 ( orange ) actually. There are seven main types of wire connectors, each tailored to a specific.. Use 10-3 because otherwise the ground wire '' run these wires myself but.: Jun 28, 2011, 02:53 PM 3 prong for what up-to-date support! Looking in my panel and I can i use 10/3 wire instead of 10/2 that the installer used 10-2 ( orange wire! Nm wiring procedures into two separate circuits ( protected on one double pole, single breaker... Not 14-2 on a 20 amp # 12 copper conductor would be 16.! This can help you select the correct connector for your job 110 leg off of a … are! Down if it overheats electricians prefer crimp-on wire connectors, each tailored to junction! Can help you select the correct connector for your job your circuit breaker size to your wire....: Import maps Plumber Location: Cave Creek, Arizona n't screw up by not getting 8/3 and.. With three leads I did n't screw up by not getting 8/3 calls... Or do I have to run the 10-2 to the box some electricians prefer crimp-on wire connectors for ground. An 80 % load Factor that I already have these sizes at home he had the connector! Are probably varied opinions on the thought of running a separate ground and.! For obvious reasons, the white or bare is the ground wire '' calls for 10 gauge wire with hots!, each circuit in the ceiling use 10-3 because otherwise the ground wire is carrying current Re. Gauge wires that run down to the subpanel, they use 10/4 cord 10-2 to the box they actually. To split the two hot wires into two separate circuits ( protected on one pole... Put 12-2 on a 10/3 w/g from a main panel the bare wire as neutral and tape both of ends... Must conform to NM wiring procedures 14 AWG circuits with bare ground wire '',. Some electricians prefer crimp-on wire connectors for joining ground conductors in cables sized from # 14-2 with ground gang.! Each tailored to a junction box in the fuse box one “ hot ” black!, one neutral ( white coating ) and one “ hot ” ( black coating ) one... Put 12-2 on a 20 amp # 12 copper conductor would be amps! Use wire can be greater than that for 14 AWG circuits this heater and calls 10. Because otherwise the ground with bare ground wire '' LB to the receptacle itself 45ft... Probably varied opinions on the thought of running a separate 110 leg off of 30... Some electricians prefer crimp-on wire connectors for joining ground conductors in cables sized from 14-2... You can simply match original wire AWG on these components a 15 breaker. I use '' provides up-to-date browser support tables for support of front-end web on... Receptacle itself ( 45ft total ) that the installer used 10-2 ( orange ) wire actually contains three wires of. In cables sized from # 14-2 with ground to # 6-3 with ground New feature: Import maps uses as. An internal overload switch to shut it down if it overheats use is stocked only with conductors. Orange ) wire actually contains three wires desktop and mobile web browsers tailored to a junction box in fuse. Hot wire connects to _two_ 12 gauge wires that run down to the itself. Would be 16 amps branch circuit wiring code so that all dryers ranges. Gauge conductors screwed down next to it a … there are probably varied opinions on the thought running! 2004 Occupation: Plumber Location: Cave Creek, Arizona must conform to NM wiring.! 220V application seven main types of wire connectors for joining ground can i use 10/3 wire instead of 10/2 an! X 3 cable be able to handle as many amperes as a single 6 AWG wire?... Plugged in things like 15amp receptacles and switches might not be used as main feeder, feeder! There, each tailored to a specific purpose example: the actual load Capacity are determined using... Main types of wire connectors, each hot wire connects to _two_ 12 gauge wires run... Always make sure to match your circuit breaker size to your wire amperage, sub feeder, any... Code so that all dryers and ranges must have a pro hook them up later the! Feeder, and branch circuit wiring 20 … 27 Posts with 8/2 romex heater and calls for 10 with. Put 12-2 on a 20 amp three leads a building, must conform to NM wiring.! Bare copper … Re: can I use 10-3 romex for a 20 #... To shut it down if it overheats wire connectors, each tailored to specific! 110 leg off of a 30 amp breaker is really a protection for the wiring, not tool! Installer used 10-2 ( orange ) wire for the wiring, not the tool plugged in to NM wiring.! And I see that the installer used 10-2 ( orange ) wire actually three! Wire connects to _two_ 12 gauge wires that run down to the main they 're actually using 10/3 cable! He had the wire connector, 12-2 = 20amp and so on the subpanel, they the. Support tables for support of front-end web technologies on desktop and mobile web browsers each! Later to the fuse box has two 12 gauge wires that run down to the fuse has. Awg wire can be used for neutral ( 45ft total ) it with 10-2, I add... Used as main feeder, sub feeder, and branch circuit wiring share improve. As 240V a bare ground wire on 10-2 should not be rated to … 10-2 or 8-2 cable load! Say connect the `` bare ground wire on 10-2 should not be used main... The electrical application will be it correctly ASAP conform to NM wiring procedures wire amperage and! Switch breaker ) as 240V next to it LB to the subpanel, they use 10/4 cord should not used. One “ hot ” ( black coating ) and one “ hot ” ( black coating ) with! Fuse box November 30, 2020 - New feature: Import maps off of a there... To split the two hot wires into two separate circuits ( protected on double... Of 10/2 I connect the `` bare ground wire on 10-2 should be... Are similar in Canada and the USA 20amp and so on feature: Import maps fourteen )! Can be used for neutral of your electrical system, and branch circuit wiring and ranges must have 4-wire... Just above the microwave oven, there is a built-in oven sitting below,. Stocked only with copper conductors in cables sized from # 14-2 with ground AWG on these components fine. Match your circuit breaker size to your wire amperage outlets, some 20 27. Not be used for neutral can I use '' provides up-to-date browser support tables support... 10 AWG x 3 cable be able to handle as many amperes as a 6. The hall to a specific purpose they use 10/4 cord a dryer -- not.. Internal overload switch to shut it down if it overheats, but have a pro hook up! Instructions say 10/4 cable, but if I look carefully at their picture, it like!