21 - Intelligent Panels - Introduction to Fire Alarms

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  • Опубликовано: 4 окт 2024

Комментарии • 128

  • @liam0748
    @liam0748 2 года назад +6

    As a student of F/A course
    This has been a great tutorial
    You should be endorsed by educators.
    Great job 👍👍💪

    • @WarnerWrestling
      @WarnerWrestling Год назад

      Where is there a FA course you can be a student in? Lol

  • @kamoupeter3168
    @kamoupeter3168 5 лет назад +2

    Absolutely clearly illustrated

  • @stu.birchall.1466
    @stu.birchall.1466 10 лет назад +5

    Good video this pal , I'm an electrician and just started a new job as a fire alarm engineer . This is most helpful video I've come across . I'm from u.k but the systems are generally the same .

    • @hamidbazmi7948
      @hamidbazmi7948 5 лет назад

      Hi Stu, A house converting to 5 flats 2 on the ground with individual entrance. 2 flats at the first floor and 1 flat at the second floor. The last 3 flats have the same entrance. The top flat has a loft too. I wonder if grade 4 smoke alarm system would be sufficient? What would be your suggestions please?
      Thanks,

  • @thecoachingengineer
    @thecoachingengineer 11 лет назад +4

    Dear Joe! you my friend are amazing! I have learned so much thanks to you! you have no idea how much value your teaching has! i really hope you can continue with your videos non stop! I cannot wait for the next one! Best Regards from Venezuela!.... right now I am working with Honeywell FS90 and Notifier XLS3000! Take Care! Please post the next video soon!

  • @Oopsie223
    @Oopsie223 10 лет назад +1

    Great videos! You're focusing on the real world application which I really appreciate. I'm studying Fire Protection Safety Tech so you're helping me with my classes and my future.

  • @vedardsecuritytechnology3492
    @vedardsecuritytechnology3492 8 лет назад +2

    You use a very great way explain the fire alarm system connection. Thank you!

  • @alanrowe6654
    @alanrowe6654 5 лет назад +1

    Addressable Panels 101. Very well done.

  • @Hawksfan3986
    @Hawksfan3986 4 года назад +1

    Thanks Joe, you did an amazing job on these videos. As a FA apprentice, I've learned so much from you!! If only "we'll get into that in the future", came to fruition 😏

    • @JoeKlochan
      @JoeKlochan  4 года назад

      Haha, I haven't given up on the idea entirely, just haven't been motivated to make any more.

    • @Hawksfan3986
      @Hawksfan3986 4 года назад

      @@JoeKlochan That's good to know there's still a chance! Haha.

  • @SandoTrini
    @SandoTrini 5 лет назад

    Love the simplicity of this. Thanks

  • @christianbatista1227
    @christianbatista1227 6 лет назад

    thank you so much for all of the great content you've posted. I'm currently studying for my S-12 and S-13 and your videos have helped me understand much better. thank you.

  • @laureno7757
    @laureno7757 Год назад +1

    Thank you I am new to fire alarms

  • @JoeKlochan
    @JoeKlochan  11 лет назад +9

    SLCs do not require an end of line resistor. The horn circuits on intelligent panels require one because that's the only method of supervising the circuit. But each device on an SLC is supervised by data communication with the panel. It's checking for each programmed device individually, so an open circuit would cause every device beyond the open to lose that data communication and go into trouble (in a style 4 circuit, which is essentially class B).

    • @Dime_Bar
      @Dime_Bar 2 года назад

      An open circuit will not lose all your devices after the open circuit as the loop is fed from both directions. Unless in the USA you have shit regulations.

  • @kristopherfrootloops6714
    @kristopherfrootloops6714 6 лет назад

    Good base knowledge for beginners.
    Although SLC is typically class A, and a T tap or worse star tap could get us in trouble in Texas.
    Plus Zone panels are being phased out. No contact ID.
    Keep up the vids!

  • @gsurface
    @gsurface 9 лет назад +1

    Joe....you are awesome man. I love the way you present the topics and you clearly explain the functioning of the system. Could you please explain/upload a video on how to wire/connect 2 FACP panels together? Is this even possible? Also, could you please explain how to wire an annunciator panel to the FACP? Thanks!

    • @JoeKlochan
      @JoeKlochan  8 лет назад +1

      +Henry Surface That's a bit of a difficult question to answer. I haven't been making videos recently, although I haven't ruled ever doing it again. There are many different types of fire panels and many different types of annunciators for them, so it would be hard to cover. I suppose I could do one on the most common annunciators. They're pretty straightforward though and the manuals would be better help than I would.
      As far as connecting two panels together, that would depend what you mean. Many panels have the capability of being a part of a network. That means that several panels (picture a college campus) can have cards that essentially all talk to each other through either a wire or fiber network. Then, at some central location, all of the panels can be viewed by a network control annunciator. Imagine a college with 30 buildings, and at the main security office they can see alarms, troubles, etc. on each individual panel, as well as communicate with those panels to silence alarms (which would be pretty risky without being there to investigate the alarm first), reset the panel, read status of detectors, etc. It's pretty complicated stuff, but also very common.
      Then there are situations where a small building may be running two fire alarm panels together. I've set up buildings that had an old panel that was going to be phased out by a new one, but both panels had to be up and running at the same time and they each had to put each other into alarm so that the entire building had notification. The problem you run into there is having to reset both panels at the same time time because if you reset one, the other panel puts that one right back into alarm. Again, that's a bit more than I can adequately explain here.

  • @silverd9011
    @silverd9011 11 лет назад

    Great videos! I am a fairly new tech and have picked up lots of good info in these videos. Just an FYI Simplex calls their SLC, IDNET or MAPNET depending on the generation of the panel but they are still considered SLC's

  • @richardb2542
    @richardb2542 5 лет назад

    Joe I Miss you!!! You're the best

  • @rainfordmiller3046
    @rainfordmiller3046 9 дней назад

    Great video now can you do a video and explain the difference between 24 volts device and data

  • @justintate2941
    @justintate2941 8 лет назад +5

    This has been an absolutely wonderful tool for me as an apprentice electrician in dealing with fire alarm systems. It's a wonderful service considering I have not found one decent book on fire alarm theory on the market. Am just curious - in which video do you get into NACs? I see you touched on them briefly in 22 but is there another video detailing NACs?

    • @JoeKlochan
      @JoeKlochan  8 лет назад +2

      Thanks Justin. I get it to NACs in video 3.

  • @obankieolanrewaju4488
    @obankieolanrewaju4488 9 лет назад

    thanks man, am taking a new assignment at work on fire alarm, addressable system. you just cover my back.

  • @sumthing24
    @sumthing24 8 лет назад +26

    It's all fun and games until your apprentice confuses the tens for the ones on the apartment modules and you have 50 address faults to deal with on Friday afternoon.

    • @smpthreddy0
      @smpthreddy0 6 лет назад

      how is installed response indicator at siemens

    • @piraat6666
      @piraat6666 6 лет назад +1

      or resets entire site from control panel, so you have to address all devices one by one.

    • @elbuitrechristian5122
      @elbuitrechristian5122 6 лет назад

      jajajajajajajajajajajajjajaajajaj

    • @billytruth6444
      @billytruth6444 5 лет назад +5

      Well perhaps if your apprentice's mentor explained it properly, then you wouldn't have had the problem.

    • @tbyrd9772
      @tbyrd9772 4 года назад +2

      he won't do that if you teach properly. Just saying .

  • @magdifahmi6229
    @magdifahmi6229 Год назад

    Great work ,Can youdo a video on how to read Fire alarm drawings for installers

  • @samargoswami8580
    @samargoswami8580 7 лет назад

    very easily explained. thank you

  • @oildeep-riggrahambel4506
    @oildeep-riggrahambel4506 6 лет назад

    Wow superb & very useful on my job.. thank you so much for your applauded

  • @MrThejoshman
    @MrThejoshman 11 лет назад

    does this need an end of line resistor?i worked as a fire tech for 8 months and dealt with intelligent panels a few times, this video really cleared up my questions.

  • @tauqeerhonestengg
    @tauqeerhonestengg 7 лет назад +1

    Really I am facing your tone and speed

  • @JoeKlochan
    @JoeKlochan  11 лет назад

    Silver D, that's true, but I believe the terminals on their panels are still labeled SLC. Brayden, I use Microsoft Paint along with a screen capture software called "Snagit" (retails for about $50). I also use a bamboo tablet to be able to draw, but it doesn't work too well with paint. It works better with other software, but I like the shapes available in paint. I borrowed the idea from the khanacademy website.

  • @somalianismail6269
    @somalianismail6269 7 лет назад +7

    the moment he said t tapping, that should tell you he is working on a B class fire alarm system because on A class system you cannot T Tap

    • @sushreysawant7012
      @sushreysawant7012 5 лет назад +1

      Can you do it on EST3 panels (T tap with class A)

  • @shamilsshamilrasheed7051
    @shamilsshamilrasheed7051 7 лет назад

    +Joe Klochan Is the term "Signalling Line Circuit" used only for Addressable Fire Alarm Control Panel?

  • @hawkomontanabanana
    @hawkomontanabanana 7 лет назад +1

    Appreciate the video - The concern i have is the loop is not completed back to the panel! this to me looks like a radial / conventional way of wiring the system? should the circuit not be completed my wiring another 2core cable back to the panel from the heat detector addressed No:1??

    • @reddyprahlad
      @reddyprahlad 6 лет назад

      Jonathan MacMillan yes, I'm thinking the same. At some point it must be connected to the Alarm panel. We're following loop wiring(addressable). Please correct me if you've any recommendations. I'm new to FA PA, my project has just started

  • @blenzangel06
    @blenzangel06 6 лет назад +2

    You never heard of AUTOPROGRAM ? You do not have to tell the panel its a HEAT or a SMOKE and the panel figures out the address automatically.

    • @Tythetorturer01
      @Tythetorturer01 5 лет назад

      Not all panels. We use silent knight. They do not. We have to detect it and find it ourselves.

  • @jawedrayyanrayyan1168
    @jawedrayyanrayyan1168 3 года назад

    What is the functions of control module

  • @judyortega9750
    @judyortega9750 Год назад

    im doing a job in Los ANGLES CA....NEED YOUR HELP

  • @nbehpour4395
    @nbehpour4395 4 года назад

    How do you connect sprinkler system signals such as SV, FS (Flow Switch), LP (Low pressure)? Can I show them on the same SLC with heat and smoke detector? Thank you

    • @JoeKlochan
      @JoeKlochan  4 года назад +1

      Yeah, they can be on the same SLC. Check out my videos on sprinkler systems, and also the one on monitor modules. They explain that a bit more.

  • @lee-annemilne1372
    @lee-annemilne1372 5 лет назад

    Is it possible to have a conventional loop of manual call points and detectors but just the loops are addressable/intelligent?

    • @JoeKlochan
      @JoeKlochan  5 лет назад

      I'm sorry I really don't understand the question.

  • @mava5634
    @mava5634 4 года назад

    if the SLC wiring has red, black and green wire for grounding, should I use the green wire to ground all metal boxes where the smokes are installed or cap it off, I don't see any information about this ground green wire

    • @JoeKlochan
      @JoeKlochan  4 года назад

      I dont know why there would be a green. It's possible you're referencing an older system that needed a shield, but I've never seen a green shield. There's no reason to pull a green along with SLC.
      Also, while the whole point of my channel is to help guys learn the trade, you need to consult the manuals for your system to know specifically how the factory expects it to be installed. While I hope to get you most of the way there with my videos, I can't tell you the required specs of every type of alarm system out there. Look in your panel manual, SLC wiring guide, etc, to see how your specific devices need to be wired.

    • @mava5634
      @mava5634 4 года назад

      @@JoeKlochanthank you

  • @danishafzal4638
    @danishafzal4638 10 лет назад

    you sir, are a true life saviour. Thank you.
    could you please explain to me, how an isolator device works?
    Cheers.

    • @JoeKlochan
      @JoeKlochan  10 лет назад +1

      A short circuit or a severe enough ground will allow all of the current in a circuit to take that path (the path of least resistance). An ISO module is connected to the source (the SLC) on one side and to a branch circuit on the other. If a short or ground occurs on the branch circuit the ISO isolates that branch from the rest of the circuit. Think of it like a light switch that opens. That protects the rest of the circuit. If there were a short on any branch of SLC, no devices on the entire loop would work because the current would take the path of the short. The ISO breaks that branch off to protect the rest of the circuit.

    • @NinjaPig145
      @NinjaPig145 10 лет назад

      Joe Klochan ur awesome

  • @jeanclinton682
    @jeanclinton682 4 месяца назад

    Hi, I have an NFS 320 notifier fire alarm panel with 138 smoke detectors and 25 modules. Now my panel is showing multiple trouble"INVERB". The same device showing "inverb" trouble blinks a green colour as a normal device, sometimes the same device blinks a red colour and sometimes the same device keeps the LED red in colour. Could you please suggest to me your expert advice?

    • @JoeKlochan
      @JoeKlochan  4 месяца назад

      Is it a new system, or was this existing and previously working fine? Do you have the proper SLC voltage on those devices? What exactly is the trouble message? The LED blink can be meaningful but it may act differently with output modules. It's been a while since I've worked on notifier, but on fci systems, those same types of modules only blink green if they're output modules.
      Another thing to try is disconnect a device and wire it directly to the panel and see if it clears.

    • @jeanclinton682
      @jeanclinton682 4 месяца назад

      Thank you so much for your response. It was working well for the last 2 years. The SLC voltage is around 14. It shows trouble in systems like "INVERB".

    • @JoeKlochan
      @JoeKlochan  4 месяца назад

      I'm not familiar with INVERB, but usually their error message is short for "invalid reply, which is something like INVREP or something like that (it's been a while for me). My guess is that's what you have. Your voltage sounds correct, I'd try wiring the missing devices directly to the panel. Are you sure you have no ground faults on the SLC?

  • @drewbush6535
    @drewbush6535 6 лет назад

    Is there just a simple low voltage smoke alarm systems out there

  • @udehbenjamine2236
    @udehbenjamine2236 8 лет назад +1

    u really a teacher

  • @defritzel
    @defritzel 2 года назад +1

    Only experienced, competent individuals should wire fire systems utilizing t-tapping. You wouldn't believe the insane wiring I've had to troubleshoot that loops back on itself multiple times. Just because you can do something, doesn't mean you should ....

  • @jamessilverman4887
    @jamessilverman4887 8 лет назад

    I want to add four wired smoke detectors to an existing central monitored station. What is required wiring and panel connections?

  • @banterboss6774
    @banterboss6774 7 лет назад

    Damn I thought T-Tap was a no go at all times this is good info

  • @KevinPaul06
    @KevinPaul06 4 года назад

    Do Intelligent panel and addressable type a same thing?

    • @JoeKlochan
      @JoeKlochan  4 года назад

      Yeah, I think when that technology first came out there was technically a difference between an addressable or an intelligent panel. That may still be technically true, but in my experience the terms are used interchangeably and they're the same thing.

    • @KevinPaul06
      @KevinPaul06 4 года назад

      @@JoeKlochan I see. For conventional, Is it possible to have a two manual pull station in a single zone?

  • @andrejohnson9099
    @andrejohnson9099 4 года назад

    hey bro what do you have for a prison alarm

  • @amritanshahuja
    @amritanshahuja 10 лет назад

    i have a doubt sir, if u could clear it, u told in your previous video that with conventional panel, we cannot connect too many 2 wire detectors( as wen all of them go in alarm it wud be problem of power availbale for them )...so with intelligent panels , how do we connect 100 detectors in a single loop ?..power for them ??

    • @JoeKlochan
      @JoeKlochan  8 лет назад +1

      +amritansh ahuja That's a good question. The difference is that on a conventional panel, an alarm is detected by an increase in current on a circuit. When a conventional detector goes into alarm, it draws a significant enough amount of current to put the panel into alarm. Only a few of these detectors can go into alarm before there isn't even enough current to power up additional detectors on that circuit. Also, at the panel, you wouldn't know if 10 smokes were in alarm on that zone or just 1, because it would show up simply as an alarm for that zone.
      On an addressable system, the alarm is not detected by an increase in current. A detector simply sends its data back to the panel and the panel evaluates the data to see if the alarm threshold has been reached. Whether the detector is in alarm or not, the amount of current that draws on the SLC is almost the same. The only difference in current draw is if the system is setup to keep the LED illuminated on the detector in alarm, which most are.

    • @amritanshahuja
      @amritanshahuja 8 лет назад

      Oh..! Thank you so much ..clears a lot a doubt for me.

  • @arshadkhan-eu8vh
    @arshadkhan-eu8vh 6 лет назад

    Very nice

  • @manojkumar-hk9nq
    @manojkumar-hk9nq 6 лет назад

    Is this possible for any type of detectors? Why because we are using series communication from one detector to another shall I 'T tap ' Honeywell detectors?.. any one answer please.

    • @reddyprahlad
      @reddyprahlad 6 лет назад

      manoj kumar it depends on if its looped or open circuit. We're using a looped circuit so we're giving in and out from flats

  • @willlatino
    @willlatino 9 лет назад

    awesome presentation. thank you for providing a very informative subject. I am in the field of fire alarm and security camera. your video are a learning experience but do you recommend any books( if any free in PDF in the web) or books,also. Thanks

    • @JoeKlochan
      @JoeKlochan  8 лет назад +3

      +wilfred german I haven't looked for any in many years, but the best one I found was the NTC brown book. It's a bit pricey but it's pretty good.

    • @willlatino
      @willlatino 8 лет назад

      +Joe Klochan thanks

  • @joselomeli834
    @joselomeli834 7 лет назад

    very interesting

  • @doglovertellmewhatwillthel7929
    @doglovertellmewhatwillthel7929 6 лет назад

    Yay a 10,000 sub

  • @hanselroa
    @hanselroa 10 лет назад

    can you please recommend us a good fire alarm system book? we will appreciate that

    • @JoeKlochan
      @JoeKlochan  8 лет назад

      +Eurodollar tv If I had found one I would. Probably the best one I know of is the NTC brown book. It's a little pricey, but it's pretty good.

    • @hanselroa
      @hanselroa 8 лет назад

      +Joe Klochan does this book have a lot of diagram?

  • @nirwan5157
    @nirwan5157 9 лет назад

    I like it

  • @ForextraderEAnow
    @ForextraderEAnow 5 лет назад

    did you get into forex market.

  • @tommiebright4414
    @tommiebright4414 5 лет назад

    I have a SLC with a pull station trouble. I replaced the pull station. I checked voltage at the device before and after this one and all 3 have 15 volts. What else could I be missing?

    • @JoeKlochan
      @JoeKlochan  5 лет назад

      What type of panel, pull station, trouble, etc. More info

    • @tommiebright4414
      @tommiebright4414 5 лет назад

      It's a notifier panel maybe a NFS-320. I'm not a fire panel tech I just over the system at work. The pull station is a notifier 12lx. The trouble alarm gives the address. It just started about 2 weeks ago so I checked the wiring for tightness first. When the trouble didn't clear I changed the pull station. It's a SLC configuration I've seen that in the drawing. Thanks for your help.

    • @JoeKlochan
      @JoeKlochan  5 лет назад

      @@tommiebright4414 there are a lot of variables. The system has been installed for a long time and this just started? That seems odd. Are you a fire alarm tech or an employee in the building?

    • @tommiebright4414
      @tommiebright4414 5 лет назад

      @@JoeKlochan The system is 18 years old. Never had a problem with this pull station before. I work in a very large factory. I'm a electrician who has taken over maintenance of the fire system. The drawings show the pull stations connected in series. My thought was an open wire but when I checked voltage at the pull station before and after this one they all have the same voltage.

    • @JoeKlochan
      @JoeKlochan  5 лет назад

      @@tommiebright4414 is there any chance another device on the system has that same address? What specific trouble message is being displayed? If you remove that device and t-tap it directly at the panel, what happens? When you replaced the device, you set the new address, right? Also, this is very rare, but it's possible the address dials need to be exercised on the new pull station. Turn the dials from 0 to their max and back several times and then set the address. I think there's some sort of wax coating on them that can occasionally (but rarely) cause a bad connection between the dials and the circuit board. Is the trouble an invalid reply? Lastly, tell me exactly what the panel model is and the pull station part number is.

  • @mohammadnabil4709
    @mohammadnabil4709 8 лет назад

    I have one problem. I have one FACP in the commercial building which is old and i am a designer of the renovation of some part of that building where we need more smoke detectors. my question is this. Can the new model of the same brand be compatible with the old in terms of looping it together. ( the brand is simplex) it will be great help. Thanks in advance to anyone who is able to help

    • @JoeKlochan
      @JoeKlochan  8 лет назад +1

      +Mohammad Nabil Most likely they will work fine. SImplex has many different types of detectors and bases, but typically the new detectors work on the older systems, just not the other way around. You may run into a UL listing problem, but most likely not. There should be documentation with the smoke detectors that tell you what panels the detector is listed for.

    • @ironmatic1
      @ironmatic1 7 лет назад

      You need a licenced fire alarm technician to do that.

  • @gala910
    @gala910 5 лет назад

    How to setting on the server?

  • @NutkeyDoesMinecraft
    @NutkeyDoesMinecraft 10 лет назад

    what program do you use and where can i download it?

    • @JoeKlochan
      @JoeKlochan  10 лет назад

      I just use microsoft paint for the drawings and a program called Snagit for the screen capture software. It's about $50. I'm sure a simple google search will lead you in the right direction.

  • @JoseMejia-sq4rz
    @JoseMejia-sq4rz 8 лет назад

    Quiero sacar la licencia en español pero no ay vídeos

  • @firealarmtechnician5767
    @firealarmtechnician5767 10 лет назад

    How do I wire up a single circuit heat detector

  • @shahariar55
    @shahariar55 5 лет назад

    i can't understand about ones and tens

    • @JoeKlochan
      @JoeKlochan  5 лет назад

      So if the "10s" dial is set to 2, the address will be in the 20s. If the "10s" dial is set to 5, the address will be in the 50s. The way to set a device to address 72 would be to set the "10s" dial to 7, and the "1s" dial to 2.

  • @aguskaswantono6863
    @aguskaswantono6863 6 лет назад

    Control panel fire alam 8 zone pyrogrand dystem trouble

  • @TitoveliOutlawz
    @TitoveliOutlawz 6 лет назад

    hey is i T-tap the SLC wire do all the ends need a Resistor?

  • @maheshmahi3205
    @maheshmahi3205 5 лет назад

    fireclasestelugulo.chapandeplease

  • @Dineshkumar-zv4oq
    @Dineshkumar-zv4oq 4 года назад

    Notifier panel ke program batiyo Hindi me

  • @mohamedtalaat1086
    @mohamedtalaat1086 10 лет назад

    انا عاوز حد يشرحلى جهاز الحريق وشكرا

  • @jawedrayyanrayyan1168
    @jawedrayyanrayyan1168 3 года назад

    Hi sr.

  • @yazeedibraheem9739
    @yazeedibraheem9739 10 лет назад

    Thanksssssssssssssssssss

  • @maxiepattie85
    @maxiepattie85 4 года назад

    T tapping is for people that never learned the right way to pull cable. Anyone that trouble shoots other peoples work understands why t tapping is bad

    • @JoeKlochan
      @JoeKlochan  4 года назад

      That's not true. Anyone who know's how to troubleshoot and SLC circuit knows that t-tapping a class B circuit isn't a problem. That's a good example of a common snobbish comment that many people in this industry would say publicly but would definitely ignore in the field when it's convenient for them.
      I think it's good to make an effort to limit the number of splices on a circuit for obvious reasons, but some aren't a problem at all.
      On many jobs the person who runs the conduit isn't the person who pulls the wire, often times it's not even the same company. If you can picture a large building with a panel somewhere in the middle and full coverage smoke detection, putting a splice box above the panel and having the SLC branch off is harmless and practical. This is particularly true if your pipe route would result in double the wiring being used on the job, just because of some common complaint that you've always heard that "splices are bad." It just shows a lack of understanding of how these systems work in my opinion.

  • @dharampaal7884
    @dharampaal7884 5 лет назад

    Dharampal

  • @FreedomFatty
    @FreedomFatty 6 лет назад

    You lost me at T-Tapping.... I don't believe you should ever do that on a fire alarm system. Most factory training teaches you not to do that.

    • @JoeKlochan
      @JoeKlochan  6 лет назад

      That's not true. Which factory training teaches that? Can you explain what problems t-tapping SLC causes?

    • @FreedomFatty
      @FreedomFatty 6 лет назад

      @@JoeKlochan GAMEWELL and Potter Signal both say not to T Tap SLC.

    • @JoeKlochan
      @JoeKlochan  6 лет назад

      @@FreedomFatty why?

  • @Dime_Bar
    @Dime_Bar 2 года назад

    Fuck me how shit are USA fire alarms. Conventional fap's don't monitor for short circuits (short circuit actually puts it into fire 😂)
    SLC as you call them ffs, it's a loop so from the panel it goes to the first device then to the 2nd and so on then at the last device it goes back to the SLC. And no you can NEVER tap off a device.