Quick Course in Electricity - Page 2 - Router Forums
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post #11 of 28 (permalink) Old 01-12-2018, 06:34 PM
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[quote=Herb Stoops;1776194]
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Originally Posted by TenGees View Post
Corona discharge?[/QUOT
When I lived next to the power line right of way, You could stand under the power lines and hold a florescent tube overhead and it would light up.

Herb
Just beyond our back property line there are those high voltage power lines. And, what you say is true. We tried it. My BIL was a big gear electrician before he retired and moved to the ranch next to ours. He toyed with the idea of setting some sort of device under them and getting free power. He never did it. Couldn't figure out how to hide it.

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post #12 of 28 (permalink) Old 01-12-2018, 07:35 PM
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Paul:

Appreciate the note on the corona discharge. Forgot about that one.
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post #13 of 28 (permalink) Old 01-12-2018, 10:25 PM
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A college professor of mine had worked with hydro. He told us that cows near hydro towers always stand with their side toward the towers. Standing facing or facing away causes a greater voltage difference between their legs which would be uncomfortable.
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post #14 of 28 (permalink) Old 01-12-2018, 10:36 PM
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Paul:

Appreciate the note on the corona discharge. Forgot about that one.
I took electronics in school. When soldering the high voltage on old style TVs if you left a 'point' in the joint, it could 'leak'. A rounded joint was necessary. You could hear a really bad one fizz.

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post #15 of 28 (permalink) Old 01-13-2018, 02:44 AM
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[quote=Gene Howe;1776354]
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Originally Posted by Herb Stoops View Post

Just beyond our back property line there are those high voltage power lines. And, what you say is true. We tried it. My BIL was a big gear electrician before he retired and moved to the ranch next to ours. He toyed with the idea of setting some sort of device under them and getting free power. He never did it. Couldn't figure out how to hide it.
I heard of a guy somewhere here in BC that put a fence up under a high voltage line and installed on insulators. He ran a wire from it to his house but all he could use it for was a heating load because he couldn't control the current. If the wind blew the wires around it would fluctuate. I heard Hydro caught on that there was a drain somewhere and found him and shut it down. I think one of the points they made to him was that someone who didn't know better could walk up and touch the fence and possibly be electrocuted.

A cousin down the road a mile had a sawmill next to a 130KVA line and Hydro warned him to store his logs perpendicular to the line and not parallel with it to avoid setting up a potential induction circuit.
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post #16 of 28 (permalink) Old 01-13-2018, 11:47 AM
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My electrical engineering professor always used the analogy that resistance was like the A holes going the wrong way in the mall at Christmas time. Diagram depicts it well. LOL
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post #17 of 28 (permalink) Old 01-13-2018, 12:10 PM
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Since the electrical folks are reading this, perhaps someone could explain how 220 circuits are configured and what phase means in a 220 circuit?

When I was in high school, we did a production in the gym,and I rewired from the box to run our dimmers, but I can't recall how I did it.

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post #18 of 28 (permalink) Old 01-13-2018, 02:02 PM
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Quote:
Originally Posted by TenGees View Post
I took electronics in school. When soldering the high voltage on old style TVs if you left a 'point' in the joint, it could 'leak'. A rounded joint was necessary. You could hear a really bad one fizz.
I've always found that once you let the smoke out of anything electrical, it just didn't work the same....

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post #19 of 28 (permalink) Old 01-13-2018, 05:33 PM
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If I recall, I stayed at a Holiday Inn Express, 220 had four wires- black (hot), red (hot), white (neutral), and green (ground). The black and red supplied the current to add up to 220. Used to do R&D for two appliance manufacturers. Now single phase and 3 phase are a different ball game as we didn't have anything with those requirements. I do think it has something to do with the alternating current. Anyone else help out here?

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post #20 of 28 (permalink) Old 01-13-2018, 06:51 PM
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Tom; It'll take more electrical knowledge than I have...but basically, when we state an AC electrical voltage what we're actually referring to is the median voltage through the sine wave representing the energy as it flows from the generator
120v is a single phase, 240 is the total of the two phases...basically a figure 8 sine wave (not shown below).
3 phase is a bit different... 208V...see the diagram below representing the energy coming off the generator's windings. Again the number is the Root Means Squared (RMS).
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Last edited by DaninVan; 01-13-2018 at 06:52 PM. Reason: aded text
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