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Lighting Fixtures, Switch Panels and Meters Antique lighting fixtures, bulbs, switches, meters and controls.

Lighting Fixtures, Switch Panels and Meters

An Electrical Engineer’s Powerwall


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  #21  
Old 08-14-2019, 04:57:32 AM
M.Canute M.Canute is offline
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Default Re: An Electrical Engineer’s Powerwall

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Originally Posted by WaterfallEEHouse View Post
...........I’ve heard some of the setup was for meter cheating the old-style meters and apparently, the only way they caught him is he accidentally spun it back too far and the power company paid him one month...........
Years ago I knew of a farmer who used to put his electric meter in upside down so it would run in reverse and lessen his power bill (energy theft!) but one year he forgot to right it soon enough and when the meter reader did the annual read, it appeared he had used a huge amount of power and he of course was billed for it. He went into the local power office and actually told them what he had been doing! They just adjusted his bill and let him go at that.
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Old 08-14-2019, 07:36:35 AM
WaterfallEEHouse WaterfallEEHouse is offline
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Default Re: An Electrical Engineer’s Powerwall

Amazing information all. ����

Will try and find again and get posted the diagrams this week.
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  #23  
Old 08-14-2019, 10:40:41 PM
dkamp dkamp is offline
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Default Re: An Electrical Engineer’s Powerwall

Wayne, I'm sure if you and I were standing there with a piece of paper, some screwdrivers, a meter or two, and a toner, we could figure out the basics of it in about two cold beverages.

Complex things, are really just amalgations of simple things... and smart guys make logical decisions. I've enjoyed being a 'reverse-engineer' as much as being an engineer... some days, I think I'm better at learning from others' designs (and mistakes) than MAKING MY OWN!!!! :-D
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Old 08-15-2019, 10:30:26 PM
Wayne 440 Wayne 440 is offline
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Default Re: An Electrical Engineer’s Powerwall

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Wayne, I'm sure if you and I were standing there with a piece of paper, some screwdrivers, a meter or two, and...
And my favorite tool- a long, nonconductive stick for those times when patience runs out and you decide to "see what this switch does".
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Old 08-16-2019, 12:00:00 AM
dkamp dkamp is offline
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Default Re: An Electrical Engineer’s Powerwall

Hee hee...

Back when I was teaching 3-phase AC drives for railroad propulsion, the first thing I did in class, was hand out materials... a fiberglass rod, end probe, resistor, and ground lead, for each student to assemble, and then we tested each one.

The Chicken Stick. Connect the clip lead to ground, then touch it to each capacitor, to force a discharge. The chicken stick lead sometimes used in conjunction with a meter or lamp to measure, but the resistor made sure that it wasn't a dead short.

The stick was also used to push against components suspected of having poor connections... if pressure changed the circumstance, we found our culprit.
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Old 11-30-2019, 03:00:36 PM
NDmeterman NDmeterman is offline
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Default Re: An Electrical Engineer’s Powerwall

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Originally Posted by WaterfallEEHouse View Post
Disk shaft mean the spinny thing? That’s silver.
Ouch. D5S meters below S/N 76,000,000 are known to have trouble with the disk bearings. If you have the mechanical aptitude, I'd suggest searching for an ABB AB1 meter on Ebay and then swapping out the disk assembly (top bearing, disk & spindle, lower bearing). If not for the clearly customized electronics inside it (note the LEDs sticking through the nameplate), I'd otherwise just say swap the meter completely.

The only trick in replacing the disk assembly is positioning the bearings - you want the disk to float in the middle of the gap but not ride high or low enough to rub against the frame.
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