4 Comments
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Michael Nistler's avatar

Wow, at 10 years old your knowledge of power, resistance and heat were way ahead of me. It wasn't until Jr College Electronics where we learned power P is equal to Voltage times the Current and that using Algebra to change the formula when only the Current and Resistance are known, the formula can be re-written to P = I squared times R resistance (i.e, pronounced I-Squared R) based on a mis-engineered copper wire that's too small or more practically speaking economic reasons (a long, large copper conductor wire soon gets pricey).

https://en.wikipedia.org/wiki/Copper_loss#Calculations

Mike Sokol's avatar

By the time I was 14 years old I was building audio circuits with tubes and capacitors I scrounged at the local landfill. Started playing in bands at 15. Then it got really crazy. My parents had no idea how dangerous these high voltage experiments were.

John Gangl's avatar

I have a question somewhat related to this: Is there a difference if everything is plugged into one 120-volt leg? Not somewhat evenly to each 120-volt leg. Does this show higher power use if each item is plugged into one leg, not evenly if both 120-volt legs?

Mike Sokol's avatar

It doesn’t matter if the current is on one leg or both legs in whatever proportion happens. Essentially the two legs far fed through a current transformer in opposite directions to flip the phase 180 degrees. Then both split-phase pole currents become additive and used measuring the total kWh energy used.