60 ft
- Thread starter e67
- Start date
ricardocello
Watching and Learning
10 AWG wire nominally has 1 milliohm per foot resistance.
60 feet would have 60 milliohms of resistance, but you have to double that for both wires.
So 0.120 ohms total for the 60 ft run (2 wires)
Voltage drop would be (0.120 ohms)(11 A) = 1.32V
Power lost is (0.120 ohms)(11 A)(11 A) = 14.52 Watts lost to heat in the wires
Sounds ok to me
alternatively, use this: https://www.southwire.com/calculator-vdrop
60 feet would have 60 milliohms of resistance, but you have to double that for both wires.
So 0.120 ohms total for the 60 ft run (2 wires)
Voltage drop would be (0.120 ohms)(11 A) = 1.32V
Power lost is (0.120 ohms)(11 A)(11 A) = 14.52 Watts lost to heat in the wires
Sounds ok to me
alternatively, use this: https://www.southwire.com/calculator-vdrop
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hwy17
Anti-Solar Enthusiast
Yes, more than ok on wire size. But there are few applications where Romex would be appropriate for PV in the USA. We are technically supposed to put PV DC in metal conduit indoors.
ricardocello
Watching and Learning
couldn’t tell if the OP was talking PV DC, or just plain AC (perhaps 240V).
300V sounded like a wire voltage rating.
I briefly considered UF for my PV runs, until I learned better from the forum.
hwy17
Anti-Solar Enthusiast
I was gonna do it until I knicked a bit of my underground UF-B with a shovel and that's how I learned to just use conduit in the future.
ricardocello
Watching and Learning
Did that with my septic pump UF-B wiring, the builder put them 6” down!
Daddy Tanuki
Solar Wizard
remember Kids when in doubt call 811. I do that everytime somebody pisses me off... I don't want to cut any com cables or underground power lines!
ricardocello
Watching and Learning
Sadly, they will only come out and mark utility lines (electrical, water, cable, phone, gas, etc.).
Privately buried lines like well and septic are not traceable.
However, I have purchased tracer tape for my PV to house buried run, so someday in the future it can be found.
Link:
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Daddy Tanuki
Solar Wizard
I think thou hath misunderstood my jollification attempts.
hwy17
Anti-Solar Enthusiast
I have nothing for 811 here, it's all my own stuff underground.
Daddy Tanuki
Solar Wizard
I'm speechless.. two in a row
Brucey
Solar Wizard
You call 811 on other properties? So they get upset at the flag markers and spray paint? You troublemaker
Zwy
Emperor Of Solar
Daddy Tanuki
Solar Wizard
gotta get them to drop lines prior to digging holes. A 6 x 2 x 6 hole can take out a lot of wiring.. plus I don't want the critters digging somebody up 2 or 3 months later.You call 811 on other properties? So they get upset at the flag markers and spray paint? You troublemaker
Daddy Tanuki
Solar Wizard
much easier here in Fuji... Suicide Forest abuts the edge of my property... all you need is a rope.
ricardocello
Watching and Learning
Jollification greatly appreciated!
Zwy
Emperor Of Solar
I found it easier to use the 36 inch post hole auger bit with an extension.
Makes em stand up for eternity.
