Power mains question: wire gauge

Dec 28, 2012 170 Replies

At 3% below nominal voltage? - would be highly unlikely...

Cheers

Klaus

Hey, the less the content, the longer the thread. This is post #120, and it was decided long ago that the OP can use 12 or 14 gage wire.

John Larkin Highland Technology, Inc jlarkin at highlandtechnology dot com http://www.highlandtechnology.com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom laser drivers and controllers Photonics and fiberoptic TTL data links VME thermocouple, LVDT, synchro acquisition and simulation

They don't make them that that go fast enough to deal with the sewage you produce

?? 100% natural --- news://freenews.netfront.net/ - complaints: news@netfront.net ---

massive inrush current that should be plenty to kick the motor in. It could even be better to have more drop to reduce stresses on the motor

than the load torque. (would be nice if the OP can supply us with a dataheet)

the 15A inrush current as JF calculated). How would you then handle low mains voltage (nominal - 6%) that could occur indefinitely?

You've never seen a motor with undervoltage protection?

SNIPPED the Klaus retard's BAD Usenet post. HEY, IDIOT! Usenet line lengths are 72 characters, NOT your retarded web page interface with a piss poor design. Learn to use the return key or set up the news client right, idiot. Yes, THIS is "NEWS". this is Usenet.

jeez. JF's calculations for that 200 foot run shows that a 3% drop does NOT go below the startup voltage of the motor.

This is similar to a farmer at the end of a two thousand foot drop from the street transformer to his house. They place the drop on the 6% boost tap of the transformer secondary. They do that to compensate for the drop which occurs in that long of a run. They do this because they are at 'low volage' (240), and every last volt counts down at the end of the line. Far cheaper than extending an 11kV HV run down a 2000 foot leg for a single transformer and a single service installation.

You lefties are always projecting your inadequacies.

You pretend to be part of the right, yet wallow in self-indulgence.

Well, I am using google groups. No way to setup for 72 chars.

Can you recommend a new reader so I am no longer an "Idiot"?

Regards

Klaus

If you demand free beer, there's always Thunderbird. I use it as a mailer but I'm not too keen on it as a newsreader. If you're willing to spend a couple of bucks, I prefer Agent.

--- Nicely, that's like the bone between the shoulder and the elbow, which reminds me of an old joke:

During the second world war, the Duchess of Windsor visited many hospitals in order to try to cheer up the wounded and, at one, asked a soldier why he was there.

The soldier answered: "Ma'am, I had to have surgery done on my penis."

"Oh, my, she interjected, did they have to remove the bone?"

"My compliments to the Duke", replied the soldier.

-- JF

Thanks. I will give Agent a try :-)

Regards

Klaus

You will need a news server, as well. Agent includes a free three month subscription and it's something like $3/mo after that. I'm not sure how the performance will be from .DK, but for 10EUR/year, Individual.net is very good (and local).

e

done

Well I'm not interested in being quarrelsome but would you mind explaining why you would use copper piping for air lines. Copper has gotten more pricy rather than recently pricey so it would seem to be rather a waste to use it for air. Help me out here. What am I missing?

Tom Horne

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In North American Practice the electrical codes forbid assembling conduit around wire. The conduit must be built as a complete assembly and then you pull the wire from pull point to pull point.

Tom Horne

I've seen the pipe fitters install hundreds of feet of black iron on jobs with a lot of air in use such as assembly lines. What is wrong with that? Is it too expensive to install to be cost effective? I have been out of the big job work for over a decade now.

Tom Horne

Black iron is incredibly expensive and impossible to work with.

I bet people are using Pex to carry air these days. Pex is displacing copper pipe for residential water service as well. The plumber installing Pex for part of my circulating hot water heating system commented that if one bids straight copper, one does not win the job.

Joe Gwinn

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