Ampacity and Wire Gauges | CircuitBread Practicals

As Josh is learning from doing the electrical installation in his new house, he takes a break from electronics tutorials to share the few things he has been learning with other electrical engineers so that they may have a bit more practical experience. Wire gauges and ampacity can be confusing topics for electrical engineers who aren't used to these terms. Josh explains what ampacity is and how it is related to the common wiring gauges used in houses.

Table of Contents:
0:00 Introduction
0:21 What is ampacity?
1:20 Different gauges of wires
1:42 14 and 12 gauge wire
5:09 10 gauge wire
6:24 8 gauge wire
8:04 6 gauge wire
9:08 Summary
9:44 Comparing Romex and THHN
12:12 The toast will never pop up

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[FrugalRepair]

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

[JAndersonGhost]

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.

[levangugulashvili]

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

[FauziNomad]

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

[allmycarsisbroke]

The screw job on that drywall is fkn beautiful.

[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.

[tbengineering]

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.

[userth]

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

[rafaelhernandez]

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

[dotanuki]

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