Thread 28688377

>buy 7500w 220v heater for garage
>internet says use 8/2 wire

I went to the store and the 8/2 wire was 3 wires. Isn't 220v 4 wires? Asking because I cannot into Google I guess and don't want to buy the wrong expensive shit, run it through the wall, then have the electrician connecting it all show up saying nope.

if you're hiring an electrician anyway why the fuck are you buying the wire

>>28688382
I'm not going to pay someone 500 bucks to snake a wire 30'.

>>28688383
it will cost that much and more to undo your inevitable fuckup

>>28688377 (OP)
kek
hope he billed ur dumb ass a 3hr min

>>28688385
I'm just asking about wire type, homie. I need no opinion on the project itself.

>>28688377 (OP)
This isn't the right board, try /diy/

>>28688390
>I'm just asking about wire type, homie.
If you can't determine requirements for a three or four wire routing for 220V, you're not up to the task to do your own electrical work, especially high voltage electrical work.
>I need no opinion on the project itself.
Anon >>28688385 basically predicted your future with near certain accuracy. Just pay the electric pixie man the money to do it right.

>>28688377 (OP)
this is /o/ not /diy/

>>28688390
>Idk about electrical
Then ask the electrician

>>28688377 (OP)
8/2 is two wires for the load and one for grounding. 8/2 should be ok for your heater but i would recommend moving up to 6/2 so when you inevitably buy a EV you can charge it on the same wire. 220v can be 2 or 3 wires + a ground depending on if the appliance needs a neutral. if you could use google to figure out wire size vs. length but cant use it to figure out the rest of this simple project, you should just call a electrician its probably a $1500 job

>>28688377 (OP)
>Isn't 220v 4 wires?
Assuming you're in the US and you mean 240V, you get this by running two phases from your load center to the receptical, and a ground wire, so no, it wouldn't be. The voltage difference between the two phases would be 240V

everyone else in this thread is a retarded pussy

>>28688377 (OP)

You shouldnt be listening to "the internet" for wiring your heater.
What did the instructions say?
It did come with instructions, didnt it?

just shoot from the hip
run those cables
what's the worst that could happen

>>28688377 (OP)
nigger still hasn't posted what model of heater he has. Great bait

>>28688377 (OP)
>Isn't 220v 4 wires?
No. That's why old dryers are 3 wire. The 4th in a 220v is the ground wire. Old 3 wires ran 2 hots and a neutral.

>>>/diy/
fuck yo house nigga we racing cars

>>28688377 (OP)
>7500w 220v
You can't get that much wattage out of 220v
You're getting like 3000w

>>28688390
>>28688383
electrical is one thing you do not fuck with if you don't know what you're doing.
you WILL burn your fucking house down.
also
>>>/diy/

they know a lot more about electrical than /o/. I have a 220 outlet but I had my electrician friend install it for a case of beer because I don't know shit about that and know high voltage is scary.

>>28691045
It's 240v... 240v at 60 amps is 14.4kw. A 30A breaker will do 7.2kw.

>>28691069
as a red blooded american, I still don't know if I have 220 or 240 in my garage.
It's a 50 amp breaker for a welder
I think it's 240?

>>28689220
LOL

>>28691080
It's 240Vpeak, 208Vrms in your garage. You can have a 50 amp breaker regardless of voltage. It's a matter of sizing the right cable to carry just over that 50 amps.

>>28691164
Actually this depends on what you have at your electircal service entrance
If your 120 Vrms service is made from center-tapping a secondary winding, then you have 240 Vrms between each phase
If your 120 Vrms service is made between neutral and either of two phases from a three phase system and, then there is 208 Vrms between those two phases

OP if you're the only one in your house then just go ahead and do the wiring yourself with a 8/2, put each one of the power conductors on a different live phase, take the risk and learn something
If you have children or parents in the house then ask on electrician

>>28688377 (OP)
NEC, 250.140 says you can save copper by effectively using the neutral wire as a ground wire.
apparently common practice from 1940s till as late as the 1990s.
>idk mang, it depends on how floaty you want your ground

>>28688377 (OP)
I ran the wires for my ev charger.
1. Just buy used wires. Bring a wire tester to test continuity, i spent like 30% less than a big box store.
2. Just ask your electrician what you need. I have no idea why someone would go out and spend hundreds of dollars on something with 0 prior research on something they obviously don't understand.
3. Just ask chatgpt what you need.

>>28689220
>stack and a half to run some wires
Nigga what

>>28688377 (OP)
Needing 2 vs 3 wires depends on what you are installing, even at 240v. Look at the wiring diagram. When you need 3 wires it usually means part of the equipment is using only 120v(usually the controls). 8/2 means two load carrying wires PLUS a ground wire. 7500w at 240v(probably what you have) is 31.25amps so your wire is the right size, put it on 40amp double-pole breaker. If you are a dumbass please pretend you never read this post, maybe play try a coloring book or something.

>>28688382
>>28688385
>>28688386
>>28688392
>>28688401
>>28688969
>>28689200
Pathetic little low IQ know-nothing faggots love to chime in for no reason. Next time just shut the fuck up.

>>28693379
Electrical is something that if you fuck up, which is easy to do, you fucking die.
I'll pay the guy that learned to do it.

>>28693425
OP is not doing wiring. OP is mounting a heater and pulling wiring through the wall. Anything beyond that is poor reading comprehension or replying just to be a fag.

>op didn't consider his 35% LCL factor ok amps
Ngmi. Should have gotten #6

I dont wanna reply because I dont know anything about mutts aluminium wiring and other retardation but lmao
>>28688385
>>28688386
>>28689200
>>28691065
what a bunch of wrenchlet cant even wire a fucking OUTLET

>>28688377 (OP)
Cost 8/2 wire plus getting that length of 8 guage wire versus getting 8/3 wire

>>28694156
>aluminium wiring
did you come here to post this from a time machine? we haven't used aluminum in like 50+ years

>>28688377 (OP)
>call electrician
>"hey, I'm gonna buy the supplies for when you install the 240, what kind of wire should I get?"

>>28694454
It's the tranny that talks about wrenchlets 24/7, he's from some eastern euro shithole