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Comment Re:Skepticism (Score 1) 53

This is from Bard. It got a decimal place wrong, 5143 inches is 130 Meters, not 1304 Meters. Regardless, my 12' claim is about 35x too generous for just 10 miles. I think the average canal would be a LOT longer than 10 miles.

Q: At 240V and 22,176A, how thick would wire need to be to go 10 miles
A: The wire thickness required to go 10 miles at 240V and 22,176A is 5143.67201113734 inches or 1304.7222053151 meters.

Here is the Python code I used to calculate the wire thickness:
Python

import math

def wire_thickness(voltage, current, distance):
    resistance = voltage / current
    cross_sectional_area = math.pi * (resistance ** 2) / (2 * 8.854e-12)
    diameter = 2 * math.sqrt(cross_sectional_area / math.pi)
    return diameter

print(wire_thickness(240, 22176, 10 * 5280))

The formula for calculating the wire thickness is:

diameter = 2 * math.sqrt(cross_sectional_area / math.pi)

Where:

        diameter is the thickness of the wire in inches
        cross-sectional area is the area of the wire in square inches
        pi is the mathematical constant pi, which is approximately equal to 3.14

The cross-sectional area of the wire can be calculated using the following formula:

cross_sectional_area = math.pi * (resistance ** 2) / (2 * 8.854e-12)

Where:

        resistance is the resistance of the wire in ohms
        8.854e-12 is the permittivity of free space, which is a physical constant

The resistance of the wire can be calculated using the following formula:

resistance = voltage / current

Where:

        voltage is the voltage of the power supply in volts
        current is the current flowing through the wire in amps

In this case, the voltage is 240V, the current is 22,176A, and the distance is 10 miles, which is equal to 52800 feet.

Plugging these values into the formulas, we can calculate that the cross-sectional area of the wire is 1.5882e-08 square inches and the diameter of the wire is 5143.67201113734 inches.

Comment Re:Skepticism (Score 1) 53

The $180 Enphase inverters are generally considered decent microinverters.

A 400W panel is roughly about 4x8'. Stacked across the canal single file sideways would be 100W/foot. At 240V, that would be .42A per foot.

12 gauge Romex (commonly yellow jacketed) is rated for 10-20A.
This means your ordinary Romex can go 47.6 feet w/o a safety buffer.

A 1000 foot run would be 420 Amps. A single THHN 400 37 wire can handle 380A. It's .82 of an inch for each wire (Romex contains 3) and over a pound per foot. Using this wire you could not even go 1000ft (about 1/5 mile). The diameter is logrithmic. If you want to cover dozens of miles, 12' diameter wire is not hyperbole; it's generous. Microinverters do not work for more than a few dozen feet.

Comment Re:Skepticism (Score 1) 53

Also, long runs of relatively low-voltage AC are safer than stringing together panels into a high-voltage DC run.

Ya, because 12 foot diameter copper cables are cost effective. Please read up on Ohms law. There's a reason why transmission level power lines are over 100,000 volts. Microinverters only work when you're going over extremely small distances, like from your roof to your attached garage under your roof. If you're not space constrained, add one extra panel to get more power at a much lower cost using a centralized inverter. You'll also save money by running a lower gauge wire because of the higher voltage. All modern panels have bypass diodes to stop a single panel, or group of cells in the panel, from dragging down the whole chain. The only time microinverters make any sense if when you have room for a limited number of panels, you want the most power, and you're willing to pay a substantial price premium for that few extra percent. Enphase microinverters double the price of your panels as they cost as much as the panels themselves, and are paired one to one. You're roughly paying 40% more to get 2-5% more power. Stand alone inverters are downright cheap in comparison.

Comment Re:AMD drivers still suck (Score 1) 75

I didn't realize it was the video card blowing caps. I just heard what sounded like a gunshot every couple of weeks while wondering what was going on. I didn't take the time to package their junk up and mail to them to get another piece of junk. I'll just never buy EVGA again. FYI Seasonic is about as good of a brand of power supply as you can get. They were one of the very first companies to get an 80+ certification, mostly because they were about the only company already making ATX power supplies that were that efficient.

Comment Re:AMD drivers still suck (Score 1) 75

If you want to have fewer problems buy the most expensive manufacturer of a given gpu, not the cheapest. I generally try and stick with gigabyte or evga.

EVGA is crap, I had one only a few months old blow out a cap every week or two until the third time it stopped working. Sounded like gun fire every time. That was five years ago. The same Seasonic 80+ supply is going strong today powering a PNY Nvidia card.

Comment Re:uh, what? (Score 1) 124

I've been running Linux as my Desktop OS for over a decade. Often when using a client's Windows machine I get quite frustrated that MS can't implement the 2nd easier to use copy/paste buffer that Linux uses. Personally I have a hard time grasping why people settle for such a low grade incomplete OS other than just using what comes with the machine. Compared to Linux, the driver support on Windows is horrible; There are more supported devices for Linux than any individual version of Windows. When I plug in a USB device or card, I don't have to track down a driver; it just works. If you don't like Gnome, run Enlightenment. Linux (or a BSD) gives me a choice of better options than the Explorer desktop.

Comment Re:RTFA (Score 1) 453

Years ago at an email company I wrote a module to retrieve email from Hotmail. I was able (with a coworker's help) to reverse engineer the cram-MD5 "backdoor" log-in that Outlook used. I do not remember ever running into a failed log-in check with that method.

Comment Re: Atkins (Score 1) 233

I had a similar experience, except I was I only vegetarian for about 4 months. I gained an inch a month on my waist during that time. I took the weight off as fast as I put it on after I went back to eating lots of meat. Also I realized how much my energy level had decreased during that time. My blood pressure went back down and I just plain felt better.

Comment Re:Bring ZFS to linux! (Score 1) 155

It is on Linux: http://zfsonlinux.org/

I've been using Nexenta to get ZFS for about 5 years, however earlier this year I switched my new installs to Linux. ZFS on Linux has been working great for me and my clients. This is not to be confused with fuse ZFS.

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