Quick Course in Electricity - Router Forums
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post #1 of 28 (permalink) Old 01-12-2018, 01:41 AM Thread Starter
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Default Quick Course in Electricity

Study this and then take the test for journeyman.
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post #2 of 28 (permalink) Old 01-12-2018, 07:36 AM
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That's well put. I've always used the analogy of water in a pipe, which I can understand intuitively. But when trying to use the analogy with others, I find that a lot of people, even a lot of engineers, don't have an intuitive understanding of electricity in a circuit or water in a pipe either.

“We should be careful to get out of an experience only the wisdom that is in it and stop there lest we be like the cat that sits down on a hot stove lid. She will never sit down on a hot stove lid again and that is well but also she will never sit down on a cold one anymore.” - Mark Twain
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post #3 of 28 (permalink) Old 01-12-2018, 11:36 AM
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Andy:

Good points. The real difference is that water leaks, electricity doesn't.
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post #4 of 28 (permalink) Old 01-12-2018, 11:42 AM
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That's always the analogy I've used too Andy. Water is like the amp and the pipe pressure is like the voltage and pipe size and elbows and changes in diameter is like the ohm. There are a few correlations to it such as adding a wire to a circuit is like adding a tee to a water line and going up a wire size or pipe size makes it flow easier.

The problem with trying to explain lots of things I've noticed has nothing to do with how simple it is. It has to do with how complex the person you are explaining it to thinks the problem is. The more complex they think it is, the less likely they are to understand your explanation.

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
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post #5 of 28 (permalink) Old 01-12-2018, 12:02 PM Thread Starter
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That's always the analogy I've used too Andy. Water is like the amp and the pipe pressure is like the voltage and pipe size and elbows and changes in diameter is like the ohm. There are a few correlations to it such as adding a wire to a circuit is like adding a tee to a water line and going up a wire size or pipe size makes it flow easier.

The problem with trying to explain lots of things I've noticed has nothing to do with how simple it is. It has to do with how complex the person you are explaining it to thinks the problem is. The more complex they think it is, the less likely they are to understand your explanation.
Your analogy works for airflow in Dust Collection too, Chuck.
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post #6 of 28 (permalink) Old 01-12-2018, 12:33 PM
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I have always had trouble with electricity. Even spending 33 years working in operations at a chemical plant. The electrical part was difficult to understand, until the lights went out!

Piping and flows were no problem. If need be, I could always follow the piping to see where it started and where it ended, but not the electrical part. Mostly I was happy when the emergency generator started during the monthly test.
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post #7 of 28 (permalink) Old 01-12-2018, 02:27 PM
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Everybody wishes they HAD paid attention when the HW tank starts leaking...
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post #8 of 28 (permalink) Old 01-12-2018, 02:39 PM
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Quote:
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Andy:

Good points. The real difference is that water leaks, electricity doesn't.
Corona discharge?
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Sent from my Hallicrafters S-40 using morse code.
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post #9 of 28 (permalink) Old 01-12-2018, 03:18 PM Thread Starter
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[QUOTE=TenGees;1776146]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.

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post #10 of 28 (permalink) Old 01-12-2018, 05:32 PM
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What’s black, crisp, and hangs from a chandelier? An inept electrician.

The clock of life is wound but once.
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