|
Off Topic Off Topic - General non-Corvette related discussion. |
|
Share | Thread Tools | Search this Thread |
09-02-2020, 9:29am | #41 | ||||||
Barn Stall Owner #122
NCM Supporter '11,'13 Bantayan Kids '13,'14,'17
Join Date: Oct 2009
Location: Gaithersburg, MD.
Posts: 22,551
Thanks: 6,180
Thanked 8,400 Times in 4,253 Posts
Gameroom Barn Bucks: $1158963
|
I took this drone shot of our power plant last week for our local utility. It consists of a 8 MW COGEN, 2 type D boilers, and 7 RU's.
|
||||||
The Following User Says Thank You to VatorMan For This Useful Post: |
09-02-2020, 9:30am | #42 | ||||||
Barn Stall Owner #122
NCM Supporter '11,'13 Bantayan Kids '13,'14,'17
Join Date: Oct 2009
Location: Gaithersburg, MD.
Posts: 22,551
Thanks: 6,180
Thanked 8,400 Times in 4,253 Posts
Gameroom Barn Bucks: $1158963
|
Better view.
|
||||||
09-02-2020, 9:58am | #43 | ||||||
Chief Electrician
Barn Stall Owner #7734 Bantayan Kids '15
Join Date: Jan 2011
Location: The corner of Cease Rd. and Desist St.
Posts: 44,335
Thanks: 16,998
Thanked 33,628 Times in 13,612 Posts
Gameroom Barn Bucks: $107478
|
|
||||||
09-02-2020, 10:07am | #44 | ||||||
2016 Election Expert
Barn Stall Owner #64
Join Date: Jan 2011
Location: Joplin, MO
Posts: 18,039
Thanks: 999
Thanked 10,155 Times in 4,727 Posts
Gameroom Barn Bucks: $11380138
|
Electrical engineering degree here. The way it works is amazingly simple. The helicopter is just a big chunk of metal suspended in the air. When you touch the metal cable to a high voltage line, initially there is a small amount of current that flows from the high voltage line to the helicopter, until the entire helicopter is at the same voltage potential. The charge itself just distributes itself on the outside of the air frame, and the occupants likely don't even feel a thing. Since there is no path to ground, air being a very good insulator, the power line and the helicopter and everyone touching the helicopter are now at the same potential, and someone could literally grab onto that 200 kV line (whatever it is) with their bare hand and be fine. But if they got near anything else that had a path to ground or a different phase, insta-zap death.
|
||||||
09-02-2020, 10:43am | #45 | |||||||
Latin American Goat Roper
Barn Stall Owner #101 Bantayan Kids '13
Join Date: Nov 2009
Location: Orange Park Florida
Posts: 60,696
Thanks: 32,883
Thanked 11,557 Times in 5,699 Posts
Gameroom Barn Bucks: $1138393
|
Quote:
|
|||||||
09-02-2020, 10:47am | #46 | |||||||
A Real Barner
Join Date: Mar 2019
Posts: 2,512
Thanks: 465
Thanked 5,680 Times in 1,917 Posts
Gameroom Barn Bucks: $12967
|
Quote:
My thoughts are that in order for the electricity to determine there is no ground/path it still has to flow through you. So why wouldn't you feel it or get electrocuted? |
|||||||
09-02-2020, 10:50am | #47 | |||||||
A Real Barner
Join Date: Mar 2019
Posts: 2,512
Thanks: 465
Thanked 5,680 Times in 1,917 Posts
Gameroom Barn Bucks: $12967
|
Quote:
Water conducts electricity only because most of it is not pure; it contains dissolved solids. When those solids are dissolved they split into positive and negative ions, and that is what allows it to conduct electricity. |
|||||||
09-02-2020, 11:01am | #48 | ||||||
Goldilocks
Barn Stall Owner #905 Bantayan Kids '13,'15
Join Date: Jan 2011
Location: My butt's been wiped.
Posts: 30,980
Thanks: 5,226
Thanked 16,607 Times in 7,133 Posts
Gameroom Barn Bucks: $1009320
|
Oh. I know one more thing. Our new generator weighed 500 ton. You should have seen the rigging on that bitch. Our Steam Generators were ‘Only’ 300 ton.
|
||||||
09-02-2020, 11:05am | #49 | |||||||
2016 Election Expert
Barn Stall Owner #64
Join Date: Jan 2011
Location: Joplin, MO
Posts: 18,039
Thanks: 999
Thanked 10,155 Times in 4,727 Posts
Gameroom Barn Bucks: $11380138
|
Quote:
Would you feel anything in the helicopter? I'm sure you would, but it wouldn't be unpleasant, just perhaps a bit unnerving to n00bs. If you were actually inside the helicopter, you wouldn't feel anything because you are essentially inside of a Faraday cage. The net charge inside a Faraday cage is zero. All the charge is on the outside. |
|||||||
09-02-2020, 11:15am | #50 | ||||||
2016 Election Expert
Barn Stall Owner #64
Join Date: Jan 2011
Location: Joplin, MO
Posts: 18,039
Thanks: 999
Thanked 10,155 Times in 4,727 Posts
Gameroom Barn Bucks: $11380138
|
High humidity would not be a problem. Even saturated to 100% humid air is a very good insulator. If it was raining hard enough to lower the resistance of the air, and the rain itself was dirty enough to conduct electricity well, at that point it would probably be unsafe conditions in general and they wouldn't even be flying around in a chopper around power lines period. But just a little rain would be OK, it would just make the distance you could get from a grounded object a bit farther. Like instead of being safe at 4 feet away when it's not raining, maybe you'd be safe only from 5 feet away.
|
||||||
09-02-2020, 11:27am | #51 | ||||||
Barn Stall Owner #122
NCM Supporter '11,'13 Bantayan Kids '13,'14,'17
Join Date: Oct 2009
Location: Gaithersburg, MD.
Posts: 22,551
Thanks: 6,180
Thanked 8,400 Times in 4,253 Posts
Gameroom Barn Bucks: $1158963
|
We have Corona (not virus) detection in our 15KV substation. I'm OK with snap,crackle,pop. I run like hell if I hear bacon frying.
|
||||||
09-02-2020, 11:37am | #52 | |||||||
10cm member
Barn Stall Owner #90125 NCM Supporter '19,'20
Join Date: Jan 2011
Location: Houston, Tejas, Estados Unidos
Posts: 81,583
Thanks: 36,991
Thanked 41,301 Times in 17,177 Posts
Gameroom Barn Bucks: $2621492
|
Quote:
|
|||||||
The Following User Says Thank You to Bill For This Useful Post: |
09-02-2020, 8:56pm | #53 | |||||||
2016 Election Expert
Barn Stall Owner #64
Join Date: Jan 2011
Location: Joplin, MO
Posts: 18,039
Thanks: 999
Thanked 10,155 Times in 4,727 Posts
Gameroom Barn Bucks: $11380138
|
Quote:
To AC current, air/vacuum has this property. https://en.m.wikipedia.org/wiki/Vacuum_permittivity |
|||||||
The Following User Says Thank You to Cybercowboy For This Useful Post: |
09-02-2020, 9:05pm | #54 | ||||||
Chief Electrician
Barn Stall Owner #7734 Bantayan Kids '15
Join Date: Jan 2011
Location: The corner of Cease Rd. and Desist St.
Posts: 44,335
Thanks: 16,998
Thanked 33,628 Times in 13,612 Posts
Gameroom Barn Bucks: $107478
|
In electrical shop in high school, we would put leads on a DC variable power supply and put one in each hand while someone cranked up the juice. We'd see how high it would get before you had to let go. Imagine your whole body feeling like hitting your funny bone in your elbow. You body feels like a giant vibrator.
|
||||||
09-03-2020, 10:19pm | #55 | |||||||
Fantasy Football Champ '12
Join Date: Oct 2009
Location: Cedar Rapids, IA
Posts: 6,234
Thanks: 742
Thanked 1,264 Times in 766 Posts
Gameroom Barn Bucks: $90918
|
Quote:
It's pretty expensive to get that stuff out of water, and even then, there's always ions in water due to auto ionization. One of the ways we measure water purity is with resistance. The system I use will purify water up to 18 MΩ. |
|||||||
The Following User Says Thank You to Entropy For This Useful Post: |
09-04-2020, 2:13am | #56 | |||||||
Latin American Goat Roper
Barn Stall Owner #101 Bantayan Kids '13
Join Date: Nov 2009
Location: Orange Park Florida
Posts: 60,696
Thanks: 32,883
Thanked 11,557 Times in 5,699 Posts
Gameroom Barn Bucks: $1138393
|
Quote:
|
|||||||
09-04-2020, 7:15am | #57 | ||||||
A Real Barner
Join Date: Apr 2019
Location: SouthEast Tn.
Posts: 6,999
Thanks: 1,665
Thanked 9,866 Times in 3,759 Posts
Gameroom Barn Bucks: $856744
|
|
||||||
The Following User Says Thank You to JetMechZ16 For This Useful Post: |
09-04-2020, 2:10pm | #58 | ||||||
A Real Barner
Join Date: Apr 2019
Location: SouthEast Tn.
Posts: 6,999
Thanks: 1,665
Thanked 9,866 Times in 3,759 Posts
Gameroom Barn Bucks: $856744
|
|
||||||
09-04-2020, 3:44pm | #59 | |||||||
A Real Barner
Join Date: Mar 2019
Posts: 2,512
Thanks: 465
Thanked 5,680 Times in 1,917 Posts
Gameroom Barn Bucks: $12967
|
Quote:
I used to work for a company that sold Reverse Osmosis water purifiers (have one in my kitchen) and we had a contraption to show the before and after RO purification process where we had a light bulb hooked up to a plexiglass tub with electrodes at the end. With regular tap water the bulb would light up. With RO water it wouldn't. The sales guys would even stick their hands in the RO water with the current on. |
|||||||
09-04-2020, 4:59pm | #60 | ||||||
Chief Electrician
Barn Stall Owner #7734 Bantayan Kids '15
Join Date: Jan 2011
Location: The corner of Cease Rd. and Desist St.
Posts: 44,335
Thanks: 16,998
Thanked 33,628 Times in 13,612 Posts
Gameroom Barn Bucks: $107478
|
|
||||||
|
|
Support the Barn: |
Download the Mobile App; |
Follow us on Facebook: |
||