Thanks, Mike. I think you are tapping into extra energy somehow to be as prolific as you are. Favorite album isn't "Waiting for the Electrician or Someone Like Him?"
Great article and analysis. And I agree 100% about all of the BS on FB and the internet. People don't realize the dangers of things that are so common in our lives. DIY projects are fine if you are skilled enough. You have to know your limitations and know when to call the professional.
This discussion brought me back to a project I had as a newly minted Electrical Engineer (very long time ago). Wrote a program to analyze the effects of a bolted fault in the power systems of commercial buildings. Worked surprisingly well. Misunderstanding the time-current specs of cascaded breakers can have a devastating impact- breaker boxes literally blowing up!
Thanks for helping folks understand a little better how these things work.
Interesting that the clearing curve (time to trip chart) appears to trip at LESS than rated capacity after a long enough time, about 50 seconds if I read the background blue rule at 1x correctly. Makes sense for a mechanical device. I had assumed that the asymptote would be at 1x (ie. It could carry a marginally less than 1x load indefinitely) but that appears closer to .75x from the curve.
Remember that the tripping zone in the center is also part of the possible threshold. This also depends on ambient temperature, how many bother breakers are packed in close proximity, etc… It’s not an exact number, just a possible range of tripping times.
Thanks, Mike. I think you are tapping into extra energy somehow to be as prolific as you are. Favorite album isn't "Waiting for the Electrician or Someone Like Him?"
Great article and analysis. And I agree 100% about all of the BS on FB and the internet. People don't realize the dangers of things that are so common in our lives. DIY projects are fine if you are skilled enough. You have to know your limitations and know when to call the professional.
Keep up the great work!
This discussion brought me back to a project I had as a newly minted Electrical Engineer (very long time ago). Wrote a program to analyze the effects of a bolted fault in the power systems of commercial buildings. Worked surprisingly well. Misunderstanding the time-current specs of cascaded breakers can have a devastating impact- breaker boxes literally blowing up!
Thanks for helping folks understand a little better how these things work.
Interesting that the clearing curve (time to trip chart) appears to trip at LESS than rated capacity after a long enough time, about 50 seconds if I read the background blue rule at 1x correctly. Makes sense for a mechanical device. I had assumed that the asymptote would be at 1x (ie. It could carry a marginally less than 1x load indefinitely) but that appears closer to .75x from the curve.
Remember that the tripping zone in the center is also part of the possible threshold. This also depends on ambient temperature, how many bother breakers are packed in close proximity, etc… It’s not an exact number, just a possible range of tripping times.