frontpage Posted by mkzmkz • Feb 16, 2025
Feb 16, 2025 2:05 AM
Item 1 of 2
Item 1 of 2
frontpage Posted by mkzmkz • Feb 16, 2025
Feb 16, 2025 2:05 AM
75-Feet Southwire 8/3 Romex SIMpull Stranded Indoor CU NM-B W/G Wire
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$200
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This is too thin for level 2 charging. My Tesla charger runs 6/3 and even then I cap charging at 32A, even though everything is rated at 50A. When in doubt, go heavier and under utilize it. Bad things are less likely to happen going that path rather than the opposite. And in most cases, the cost differences aren't that significant. Refer to:
https://www.tesla.com/support/cha...installin
That said, this 8/3 would be great for most dryers, convectional ovens, and small campers - devices rated ideally below 30A peak.
Most wires, including this one, is rated to 600V - which you aren't going to get off a typical breaker box. Continuous amperage is what you need to worry about and adjust your wiring size accordingly. Again, when in doubt, go one gauge higher.
https://www.menards.com/main/elec...c-6441.htm
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Also shows this as "normal" price. SD says this was around $60 earlier this past year?
Could this be used to charge EVs? Sure. So can 120V extension cords at level 1 rates.
But you would be completely negating the point of Tesla's level 2 charger. At 8/3, you're peak 30 amps, 24 continuous. That's about 20 miles an hour charge time. Meanwhile, the breakers, insulation, etc. are all around the same cost if you want to run 50A versus 30A. Only difference is the wire.
And you're putting this much effort into installing an EV charger, the cost of going with a higher gauge wire is totally justifiable. Having an EV charger in your house does add value to the home. Not what you put into it, but it does add some.
Plus, this is indoor rated cord. So, you would be having an in garage charger. And most garages aren't 75 feet away from the breaker box. I guess you could try to sell the leftover wire..
Again, this is perfect for a 30A dryer, convectional oven, garaged camper, etc. But for a modern EV, you should consider going with at least a 50A setup - meaning 6/3. And consider under-driving the continuous load to add an additional level of safety.
Somewhat disagree. Installing a higher amperage charger has drastically reduced charging times, making owning an EV significantly more practical. While Tesla's charge points are decently abundant, the cost associated with them doesn't provide the true savings capable of owning an EV. Plus since my car isn't garaged, I always worry about the level 1 charger being stolen if I were to charge overnight.
Totally agree with your cable suggestion, though. Although 6/3 is really needed for Tesla's charger. Other chargers I am not familiar with. For maximum charge, run 4/3 with 60A breakers and proper conduit. But that tends to be much harder to source. And more amperage means more focus on proper heat dissipation.
Also shows this as "normal" price. SD says this was around $60 earlier this past year?
Perfect cable for a 24A continuous, 30A peak basement. If you plan on exceeding that, you'll need to run a second line or go with a higher gauge wire.
Perfect cable for a 24A continuous, 30A peak basement. If you plan on exceeding that, you'll need to run a second line or go with a higher gauge wire.
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