2003 Blackout analysis = Superb edu on Power Grid

https://www.youtube.com/watch?v=KciAzYfXNwU Excellent analysis and info. “Three trees and a computer bug caused a major part of North American [power] to completely grind to a halt.  If you had asked anyone working in the power industry the prior day about catastrophic loss of service the next day…”   From the comments: jay152277 1 year ago The … Read more

Mainstream explanation of History of Power Grid, 60 Hz vs 50 Hz, 110 VAC vs 220 VAC

Part 1 voltages https://www.youtube.com/watch?v=7yRGvMgieEU Part 2 frequencies https://www.youtube.com/watch?v=NEkegQanD2I     The history of the power grid, including the development of standard frequencies like 60 Hz and 50 Hz, as well as voltage standards like 110 VAC and 220 VAC, is closely tied to the evolution of electricity generation and distribution systems. Here’s a mainstream explanation … Read more

Ground Resistance Testing (real world experiment) with Electrical Code Expert Mike Holt

“Stray current” is a real danger. https://www.youtube.com/watch?v=Yg6G5VUSsWA     Ground resistance testing is a crucial aspect of electrical safety and compliance with electrical codes. The process involves measuring the resistance of the grounding system to ensure that it meets the required standards for electrical safety. In a real-world experiment with electrical code expert Mike Holt, … Read more