My house has ZERO exterior outlets. I would like to add a few. I can find videos about piggy backing a new one onto a existing interior outlet. I do not want that. I want a new dedicated circuit. I have limited experience with electrical work. Replaced outlets and light switches. Even replace a breaker. So I don't feel like hiring someone when I could just learn, so fuck off with the "just hire someone" this is DIY. I'm here to DO IT MYSELF and LEARN.I want a circuit I can run a 120v welder from, maybe sometime later I can install a 240 line but for now I have other uses too. 10/2 romex with a 20AMP breaker? I will be running it through a crawl space so I shouldn't need any kind of conduit. I suppose the only part I'm really not sure about is getting the wire from my crawl space to the breaker panel somehow?
Why are you derating a 20a circuit to 10 gauge? is it really long or something? You're buying yourself a volt or two at the full 20a load.How you run the wire depends on were the panel is. I take it it's in an interior wall which means you have a shot of fishing it up the wall cavity with a fish rod/tape. If there's any blocking in the wall or if the wall is insulated then you're ripping out drywall.If you do rip out drywall run a 2"-3" conduit from the bottom of the box to the crawlspace so you can pull new circuits without destroying the wall again.
>>3009014I was just thinking of doing overkill since I will occasionally use a 120v welder on the circuit? But if its not worth it?But yea interior wall thats insulated. I could run conduit on the outside of the house down?
>>3009027Cut the drywall out between two studs below the box, run the conduit in the wall from the box to the crawlspace, put the drywall back, tape mud and pant the drywall.
>>3009027Your welder is going to be anywhere from 20 to 50 amps. Don't try and dual purpose like that. Run 12 awg. If your welder is larger than 20 amps you're going to need a separate dedicated circuit anyways. And if it's larger than a 20 amp it's likely going to also be 240v.
>>3009027If it's 120v, it likely maxxes out at 13A, maybe 15A if they're pushing they're luck. Most I've seen don't come with 20A 120V plugs (though I'm sure there are a few that draw 18A+ with a 15A plug...). Home gamers don't have those, and those that can install them will just put in 240V 30/50A outlet, anyway.There's no point in doing 10AWG if you're not putting it on a 30A circuit (or it needs to be derated for another reason). Just put in your 5-15 outlet and a 6-30 or a 6-50 at the same time, if you actually think you'll upgrade to a larger welder at some point. Waiting doesn't even save you any money, you just have to get under the house and pull wire all over again, so...why?
>>3009010You look at the load. It's a welder so maybe could be kind of high, constant load. But get the current.Then you size the wire, what wire do you need for that load, also, how long is the wire, both length and current drawn increase resistance. Also the route, if cable is run in insulation, or lots of cables grouped, it should be derated.Once you work out the cable size, you get a suitable breaker which protects that cable.Outdoor circuit sould be able to isolate it easily from indoors. Also, should be protected by current imbalance I.e. gfci.Get a copy of your local regulations/code and read it.Finally, you should understand the basics of testing and have equipment capable of performing those tests.There's no point putting a breaker in to protect a cable if you fuck up the install and the ground fault impedance is so high the breaker never trips.
>me over here running 300a inverter welders on 14awg extension cordsa piece of white romex with 10-50 plugs on the ends just works
