Comments by "Nhit C" (@nhitc6832) on "Main electrical panel explained - Load center - service panel" video.

  1. It just depends on which system you're familiar with. I understand more about 240/120 system than I do the one used in Europe
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  2. because it's easy to conceptualize by pretending current going in one direction. But of course, we all know AC current alternates.
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  3. because ground bar and neutral bar are bonded together inside the panel. So it doesn't matter if the receptacle ground is connected to neutral bar or ground bar. Some panels have a separated ground bar (but still bonded to the neutral bar) simply because they want to group the all the ground wires together making the panel looks neater
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  4. no we're not. In what way are we behind?
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  5. how are you doing so far?
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  6. 125A breaker monitors the current on ALL wires coming to the panel. If the current exceeds 120A, it will trip the breaker, cutting the power.
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  7. GFCI monitors the difference in currents on hot and and neutral. If there is a difference, it will trips AFCI monitors the waveform of current. Current with no arc fault has a smooth sinusoidal waveform. An arc fault will disrupt this waveform. AFCI detects this irregular waveform and trips.
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  8. it may not be fatal, but you'll get a nasty shock!
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  9. yeah because we use 240/120 split system.
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  10. I was frustrated i didn't understand electricity. So, I took a circuit analysis course, and glad I did! I understand some stuff even some amateur electricians don't.
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  11. because the transformer is the source.
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  12. because at the panel, neutral is the only path back to the transformer. By connecting ground to neutral, any current on the ground (in the event of ground fault) will eventually goes through the neutral and back to the transformer.
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