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Dual Incomer - Interlock

04/22/2025
posted in Electrical Engineering
by Anonymous Poster
This is a dual-incomer panel (see the image), but only one contactor should be ON at any given time. Why is a timer necessary in this setup? I underst...
Views: 31, Comments: 1
Last comment 04/22/2025 by PWSlack
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Ex-Rated Distribution Panel

04/17/2025
posted in Electrical Engineering
by Anonymous Poster
Are there any drawbacks to using an Ex-rated panel in an application where a standard indoor industrial panel would be adequate? I understand that cos...
Views: 67, Comments: 6
Last comment 04/22/2025 by PWSlack
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Geothermal or Fusion

04/16/2025
posted in General Discussion
by SolarEagle
Geothermal or fusion, which do you think is more attainable in a timely manner...?? Which one makes better economic sense at this time..? If you had...
Views: 212, Comments: 26
Last comment 04/20/2025 by SolarEagle
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Why Didn't Anyone Tell Me this About Epoxy?

04/16/2025
posted in General Discussion
by Randall
Set epoxy is very hard at room temperature, but, if you warm it up a bit by say putting it in boiling water briefly it becomes soft enough to easily t...
Views: 231, Comments: 7
Last comment 04/23/2025 by Nigh
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Accountants Sank the Titanic

04/14/2025
posted in General Discussion
by HiTekRedNek
IMHO:(To which I am currently entitled): The reason the Titanic sank so fast, and so many people perished was because of accountants. The original pl...
Views: 209, Comments: 18
Last comment 04/15/2025 by Doorman
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Toroidal Propellers on Wind Turbines?

04/10/2025
posted in General Discussion
by HiTekRedNek
Toroidal propellers are great at reducing noise and increasing efficiency, currently being used in boat and drone props. I realize making wind turbine...
Views: 334, Comments: 14
Last comment 04/14/2025 by Rixter
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Bringing Back to Life an Extinct Species: The Dire Wolf

04/08/2025
posted in BioMech & BioMed
by phoenix911
We’ve heard about frozen mammoths being discovered, with plant material still in their stomachs, and possible genetics still viable to bring the...
Views: 202, Comments: 17
Last comment 04/11/2025 by phoenix911
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Safer, Simpler Solar Cooker/Solar Drier?

04/05/2025
posted in General Discussion
by gaiatechnician
I did a solar cooker on equatorial mount last year and used it to steam soil and boil weeds, to kill seeds and pests in them (could use them directly...
Views: 279, Comments: 20
Last comment 04/16/2025 by piolenc
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What is the Name of this Math Operation?

04/05/2025
posted in General Discussion
by HiTekRedNek
I must be getting somewhat senile or there is a bubble in my think tank. I remember a math symbol that was like a square symbol ,but at the bottom of...
Views: 377, Comments: 27
Last comment 04/19/2025 by Jorrie
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Effect of Ice on an Explosion

04/05/2025
posted in General Discussion
by HiTekRedNek
I have asked this question before, I think, but did not get a direct answer. If an explosion is detonated in the core of an iceberg, will the ice abso...
Views: 138, Comments: 5
Last comment 04/12/2025 by SolarEagle
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Space/Time Travel

04/03/2025
posted in General Discussion
by NSS
Just thinking here. Ok unless somehow we invent WARP speed. And even if we do, everything is sooo far away in space, even if we traveled with Star Tre...
Views: 368, Comments: 33
Last comment 04/19/2025 by Jorrie
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Travel Router

04/03/2025
posted in General Discussion
by BruceFlorida
Using a Roku or Amazon Fire Stick in a hotel is easier with a travel router. My wife and I spend about 10 nights a year in hotels. Some hotels, like...
Views: 124, Comments: 3
Last comment 04/03/2025 by phoenix911
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Fire Spiral (April 2025 Challenge Question)

03/31/2025 posted in Challenge Questions
The accompanying diagram depicts 35 matches arranged in a spiral. Move 4 matches to create 3 squares.
03/31/2025 Views: 419, Comments: 8
Last comment 04/17/2025 by Alex. Roman
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A Cat Dreams of Mice (March 2025 Challenge Question)

02/28/2025 posted in Challenge Questions
Delroy the cat is taking a snooze on the couch. He dreams he is encircled by 13 mice; 12 of them brown, 1 of them white. Delroy's owner says that he...
02/28/2025 Views: 382, Comments: 16
Last comment 03/17/2025 by Kris
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Snowball Fight Strategy (February '25 Challenge Question)

01/31/2025 posted in Challenge Questions
A square snow fort contains 40 children.There are 3 defensive positions along each fort wall (8 total). They have vowed to defend their fort against...
01/31/2025 Views: 464, Comments: 3
Last comment 02/21/2025 by Anonymous Poster
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