AC Vs DC Circuit Breakers: The importance of the DC ARC Extinguisher

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Energy Engineer Jesse Gorter explains in this video what the real difference is between AC and DC Circuit breakers, what the importance is of the DC arc extinguisher, and when AC/DC breakers are interchangeable.

✅ Content:
00:00 Circuit Diagram
00:30 Different Tripping currents
01:15 Internal parts of the breaker
04:05 The arc extinguisher
05:15 AC Vs. DC arcs
05:57 DC breaker designs
06:35 Prices and interchangeability
07:37 Conclusion

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DISCLAIMER: The content of this video is for information purposes only. If you choose to use any information provided through this video, you do so at your own risk. Viewing and/or listening to this video does not form a professional relationship of any kind. All rights reserved.

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#DC breaker #Solar Breaker #AC/DC Breaker

[tomcourtney]

Thanks ! I learned more about breakers in five minutes than I have known in 70 years. I did subscribe instantly.

[muky]

I have been self-educating for years on solar energy through resources on the Internet, but I can attest to the fact that your channel is by far the most valuable channel on renewable energy that I have come across. I can't wait to register for your course very soon. Thank you so much.

[BrackstonesTravelAdventures]

Another great Vlog, I love the way you teach this so clearly and with good picture demonstrations. Thank you for do these Vlogs

[organicngreen]

One Of The Best Technical Clarification Videos I have come across !! Great Clarity Clear Explanation !! Many Thanks and Best Wishes !!

[sLiving]

Indeed, your teaching ability and patience in your explanations makes you a superb guide, thank you

[Electronzap]

Nice, that was really easy to understand. That arc chamber is really cool.

[AndyFletcherX]

Worth noting that a lot of DC MCBs have magnetic arc suppression where a magnet directs the arc into the suppression chamber. These breakers have + and - indicated on the terminals and the polarity should match the source of fault current.

[budmartin]

Good video. Do you also have videos that explains the difference between Polarized and Non-Polarized DC circuit breaker and why the polarized circuit breaker will catch on fire if polarity is not observed?

[StansE]

I appreciate this great illustration. My confusion occurs with (NEC-type) Safety Regs for DC circuits. Circuit Breakers have the arc extinguishing chambers, as I understand, while I have read that Isolator (rotary) Switches do Not. Yet, NEC codes require Isolator Switches for DC arrays.
So … for a Small (2 panel) system, is it Best practice to have Fuses between panel & MPPT, plus Isolator, plus Breaker … or which combination thereof, or only one …. ?

I have also read that as long as the current specs of my panel is BELOW my MPPT, I really don’t need (any) ….. now it should seem Clear how easily one can become Confused …. 🤷🏻‍♂️

[peckerpeter]

Can you also discuss isolators catching on fire and some countries not using them anymore and what would be a good substitution?

[richardmurphy]

Hi - the video on explanation of how the DC and AC MB'Cs function is great - however - the speaker does "NOT" mention the consequences of arcing - the breaker, be it small in size or larger ACB's - one cannot operate the breaker beyond the contact rating as a result of ongoing tripping. If a any breaker has exceeded the contact capability, the breaker under fault conditions will explode - he does not mention this - very confusing as opening/closing/opening etc. under specific fault levels will cause the MCB/ACB to explode. This is where a "ductor" test should be conducted - this checks the condition of the contacts. The breaker would inevitably fail after several trips - this is a short comment to a much longer discussion. Thank you. Richard Murphy (Pr Eng)

[lastcenturyclassics]

Jesse's second half keeps him in step. 😁

[topeye]

There are still many polarised breakers around with magnets to move the spark into the extinguishing champer. If they are connected with wrong polarisation they catch on fire. The flow of current must be correct from + to -. If the source comes from bellow into double breakers, the + must be connected to the side where a - symbol is printed on top of the breaker shematic.

[Coyotehello]

You are hilarious. And I truly enjoy the videos were you "geek-out" a bit more and if some want to by-pass that you give the timestamp to jump to. Perfect!

[easyji]

as usual simply and most clearly explained..well done..keep on this great spirit

[---]

Thank you very much for detailed overview! Very nice video!

[flyingtools]

Thanks for a very good and informative video.

[marktheunitedstatescitezen]

Very Good & Thank you ! I’m a DIYer attempting to design and implicate Battery Back up for if and when the grid goes down which it does every few years where I live . My breaker box is a normal 1 - 120v @ 100A 20 or so Circuit breakers & I’ve only got 1 - 220v Circuit my central AC what shift the grid goes down we’re not using central AC we could use fans That’s not the point my Inverta is a 5 kVA 230v charge controller 48v my battery banks are 15 pease 3.2v 280Ah lithium phosphate Daily 15s 120A BMS & 20 peace 2.3v 40Ah ithium titanate batteries ANT 20s 100A BMS “ my Inverta 230 V would like to used to hotline which is 115 V the neutral line is 115 V all still single phase can I put on a 230 V single into a double pole breaker both the L one hotline 115 V and the neutral which is 115 V to make my breaker box single phase at 115 V for a battery back up if the grid goes down and I have the solar inverter that can slowly charge by Lithia batteries very slowly ! So what I want to do run both powerlines to a double pole breaker both the hotline in the neutral because each are 115 V in the ground would be to an earth ground but then what would I use for a neutral if I’m using the neutral as a hotline but then what do you use when you use in a 230 V for a neutral because there is no neutral you just have two hotlines & a ground ? I would greatly appreciate in your convenience if you could just jot down your ideas and your wisdom !

[tracycrispino]

Amazing explanation and easy to understand. Again, Thank you for sharing your expertise!

[bubbascoutdog]

Thanx Doc, I learn a lot from your utuber vids!