Ampacity and Wire Gauges | CircuitBread Practicals

[@FrugalRepair]

Great video and explanations! Hey curious, what lav mic are you using? It sounds great.

[@CircuitBread]

Thanks! It's an expensive one as we wanted it to work with the systems we use for our client work, so it's a Sennheiser EW 112P G4. I just checked and it's gotten even more expensive since we bought it - yikes.

[@FrugalRepair]

@@CircuitBread Thanks for letting me know! Keep up the great work.

[@JAndersonGhost0326]

In a commercial application you will often see MC instead of Romex, which stands for Metal Clad. Instead of the plastic sheathing, the cover is wound up aluminum, like a metal hose with wire inside. It's pretty neat.

[@CircuitBread]

I actually used that to run power to my furnace, the only place I used it. The funny thing with each type of wire, there are different ways they go into junction boxes, and each new type threw me off. But it's good to know that if someone is ever blundering around in the mechanical room, they can't cut that cable. In commercial applications can it run exposed or does it need to be tucked away somewhere?

[@dionwatters992]

Great video. Thank you!

[@CircuitBread]

Glad you liked it!

[@DavidA20200]

@@CircuitBread OK serious question for you. I need to do a 90 foot run and I want the circuit in the room to be 20A. Do I need 10 gauge or 8 gauge to compensate for the long run? it will have high amperage loads on quite frequently and for long durations

[@richranchernot]

The NEC will tell you when you need 20 amp or 15 circuit not because you are installing LED lighting. Also multiple smoke detectors do not go off at the same time because they are on the same circuit. They go off at the same time because of a third (tandem) wire.

[@allmycarsisbroke]

The screw job on that drywall is fkn beautiful.

[@CircuitBread]

I did NOT do the drywall but I still see the guys who worked on our house around so I'll let Rodney know you appreciate his work!

[@levangugulashvili1296]

Why ground wire is bare? In Europe you have green/yellow wire as ground. Is this code driven?

[@CircuitBread]

Ground can also be green but probably because code doesn't require the ground wire to be coated (it should never be conducting in ideal situations, and even in non-ideal situations, it should only conduct very briefly before the breaker trips), it's probably just cheaper for it to be bare.

[@tbengineering7066]

Hmm, on your point about the smoke detectors, I guess that explains why both of my smoke detectors go off whenever I pull something out of the oven when cooking. Also, it is amazing how sensitive those things are.

[@CircuitBread]

Yeah, all our smoke alarms went off due to a faulty smoke detector and the entire house was deafening. It was quite the experience. We have a small travel trailer and the smoke detector in that goes off legitimately nearly every time I cook 😬

[@tbengineering7066]

@@CircuitBread Yeah, I can see that as a massive pain to track down the faulty smoke detector. On one hand, having them all connected and going off is helpful if there is a fire. On the other hand, when one fails, it is hard to track down where the problem is, and how many could have gone bad.

[@FauziNomad]

Hi there I just now subscribed your channel bcz I find it very good.

[@CircuitBread]

Thanks, I'm glad you've found it useful!

[@userth39]

Does the conduction of electricity to the magnet increase the strength of the electromagnet, and then we go back and take the electricity from the magnet

[@userth39]

Can you try it yourself since you are the owner of this channel

[@rafaelhernandez4872]

so the pattern i picked up is, the higher the gauge, the lower the amp the lower the gauge, the higher the amp

[@CircuitBread]

Yep, spot on. And it's because the lower the gauge, the thicker the wire, thus more current can flow on it.

[@rafaelhernandez4872]

@@CircuitBread that's helpful. Thank you.

[@dotanuki3371]

man, americans sure love their wonky standards. measure wire by diameter? cross section area? what, you want to be able to determine gauge *without* a scientific calculator? get outta here