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Добавлен 24 дек 2015
Torquing Electrical Terminations
This video is about Torquing Electrical Terminations
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Видео
Solar PV
Просмотров 589 лет назад
Byron Kirby explains solar/PV systems, system types, and some ballpark investment numbers.
Grounding and Bonding
Просмотров 26 тыс.9 лет назад
Byron Kirby explains grounding, bonding, the difference, and the correct application for both.
Alabama Training
Просмотров 3029 лет назад
Byron Kirby explains the CE requirements for the state of Alabama Electrical Board. Alabama Training website www.alabamatraining.net/
Overcurrent Protection
Просмотров 5 тыс.9 лет назад
Byron Kirby gives a simple explanation of what overcurrent protection is and what causes it to activate. Subscribe to byronkirby.com! ruclips.net/user/byronkirby.com@gmail.com
Byron, I have spent far too much time watching videos trying to get an answer to this question. Not a single outlet in my house is grounded even though they all have ground wires going to the panel. I suspect it is because the neutral and ground are not bonded. Is that a fair assessment?
Byron many thanks for you clear explanation. I have a pond lined with pvc liner and rocks. Inside six 12V CC led lights. The water is recirculated by an external Swimming pool pump 220V . The manufacturer recommends bonding the lug beside the motor to metallic parts.... but as I said my pond doesn’t hace metallic parts. Thanks
My entire 15 year electrical career I've never used a Torque wrench and I passed every single inspection! These tools are overrated in my opinion. Great video tho!
If the ground rod doesn't provide a good enough path back to the transformer to blow the breaker, then what purpose does the ground rod serve?
Exactly! Earth ground is overrated.
The ground rod doesn't affect the breakers. It's there as a low resistance path for any high voltage surges to be diverted into the earth(0 volts), ideally, to protect equipment and equipment only. In the case of lightning striking the transformer that feeds your house; the ground rod should carry most of the current from the lightning strike, instead of all the equipment around it.
At 2:00 minutes you suggest "this is how we open the breaker" while the text shows code referencing "bonding" while your example of 9 amps and overall lesson is accurate this mixing of terms may confuse some folks. Grounding is the method for providing a return path for faults whereas bonding is the method of ensuring designated areas are at the same voltage potential. While in practice these two functions can overlap the purpose for each method is separate. I am by no means an expert, just simply trying to reinforce my own understanding.
Thanks, that was a fantastic explanation.
Very nice and good call on marking the torqued items. I bet it makes the electrical inspector happy too.
I ran into a river house, im still working on it, but the panel is in a kitchen cabinet behind a fridge. There was two breakers that if turned on, they would energize the neutrals and make the whole panel show 240 volts. It was an old block home, and had conduit and junctions everywhere. I traced down the two circuit, and they both had an exposed hot making contact with side of the junction box, and the bare grounds were connected to the box. Instead of faulting instantly and tripping the breaker, it would load up the panel for several seconds with 240. When i tested it i had everything in the house on, but nothing plugged in anywhere. No appliances. Just lights. After i found the bad junctions, and broke the hot connections to the boxes and conduit, everything held and read correct. I havent pulled the meter yet or looked at the main bonding. Its a bonded neutral/ground in the panel. If its bonded at the meter also, will that cause everything to return on the neutral and juice up the panel this way? Essentially like having two neutrals running through the house instead of a neutral and ground?
What I don't get is, if you tie grounding and grounded wires together at the service box, aren't you energizing all that metal (metal outlet boxes, the metal case of the service box, metal light fixtures, etc.)? Isn't that a huge safety risk? Why doesn't someone get electrocuted by touching a metal outlet box with code setup of main bonding jumper?
So what can be wrong if you are getting 120 volt metal to ground??
Thank you