Basic Circuits | Practice Wiring Board Walkthrough
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- Опубликовано: 7 фев 2025
- Simple. This is the way a lot of HVAC guys start off. Maybe the practice board looks a little different...it may even be one of those expensive name brand ones. Any way you slice it, they pretty much do the same thing.
I don't see this as a long term "thing" as it is just to get the basic concepts of circuits across to beginners. This board (if a practice board is used at all) should morph into real equipment very quickly. Use them to understand types of circuits, series and parallel, perform basic voltage checks, etc. Then move on to applying those skills/concepts to a real unit.
I honestly like to use them so I can hopefully teach newbies not destroy a whole bunch of thermostats @ $50 - $75 dollars a pop!
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Thanks John was a pleasure to know you in person and appreciate you for yours videos and all the acknowledged I received
May God bless you and your family
Thank you sir. Nice to meet you. It is a small world and you never know who you are going to come across! Have a Merry Christmas and Happy New Year.
I am 69 yo state licensed in Texas for 17 years more or less, i enjoyed watching this videos cause they keep your memory fresh. I still do some works here and there. You have an amazing way of teaching, i really enjoy your videos.
Just trying to do a little bit for some guys I know coming up in the field...and for anyone else that wants my input too! Thanks for watching. I appreciate it.
I needed to see this wired on actual components from beginning to end . It brings the wiring diagrams from theory to practice and is very valuable knowledge of on the job training. You're a big help and resource for students and Techs of all levels. Keep up the good work.
Thank you
You are the best instructor Sir ! Learning a lot from you . Thank you
Awesome video, I’m currently in my second month if HVAC and this helped make sense of what I did today in class with the circuit. God bless you John
Stick with it. It takes a little effort to get it in your head but nothing you can't handle. If you study and do your part, it will *click* faster. You will never stop learning because there is always something new! Unlike plumbing 🤣🤣! It hasn't changed much since the Roman empire! (For all my plumbing buddies out there)
im currently attending an hvac course offered by my school and this demonstration helped me much, thank you
Awesome. I try to put videos up that are more targeted to beginning techs. I remember what it was like when I first started out and RUclips wasn't a thing yet. I just hope it helps some...
Love it, short and simple and very well explaination
Thanks
Hello there Mr 1st time watching. Came across this hvac video. Caught my interest very well explained keep up the great job. New subscriber. God Bless
Thanks.
Muchas gracias por esta presentación, un video práctico y fácil de entender, personalmente llevo un mes tratando de entender el cableado eléctrico y finalmente puedo captarlo , es sencillo y genial, gracias, Bendiciones
Thank you. Electricity is a challenge for many and takes time.
I really struggle with this. You have my complete attention.
Electricity is something a lot of techs struggle with...in my opinion...and takes a while to get your head wrapped around it. Keep struggling and it will get better!
What a video !!! You helped me understand it more and I’m sure you’ve helped a bunch more ! Thanks again
Thanks.
John, I just sow your video first time and it is very clear to understand, for what I would like to say thank you. If you can make the same way wiring for heat pump ac unit. it will be very helpful. Previously thank you very much.
Thank you. I do have a video on wiring up a heat pump split system unit. If you would like to check it out it is "how to wire a 2 heat 1 cool heat pump system".
HI, thank you for answering, but I could not find it. If it is possible, can you send me the exact link for that video?
Try this
m.ruclips.net/video/a58aEmcpNao/видео.html
"How to identify and wire a 2 heat 1 cool heat pump system"
I now there are plenty out there to watch so thanks for watching and the comments. I appreciate it.
Awesome video. I remember those boards. Broken down to the point in simplest form.
The humble beginnings for a lot of techs!
Great video. Thanks for the video.
Thanks. It is just a simple practice board but it does have its uses for getting started with circuits.
Just starting off as well, thank you so much.
Lots of changes going on right now so stick with it. It is a good field to be in...lots of opportunity. Good luck.
Awesome video, keep up the excellent work 👏🏼👏🏼👏🏼👏🏼👏🏼👏🏼👏🏼👏🏼
Awesome video.. Thanks for sharing it. Well explained.
Thanks
Wow........learned more in this video than in college lab
Oh lawd. Glad to hear.
Nice video.
Great knowledge and explanation.
Thanks for sharing
Thanks. I put it up for some hvac youngsters and hope they get something from it. I am sure it is much too easy for some out there!
Thanks so much for this very helpful video
Thanks.
Nice very good, a lot to learn
Great video...
Excellent
your appreciated john thank you
Thanks.
great video 🔥
Great simulator brother 💯💯💯
This was an easy one! Thanks for checking it out.
Does the neutral on the 24 volt side of the transformer run through the transformer to the neutral on the 120 volt side?
The 120 v circuit has a neutral, the 24 v has a "common". Inside the transformer the two sides (primary winding and secondary winding) never touch. They are essentially doing the same thing...completing a path...but neither one bring any voltage to the table!
That would be Nice to get the diagram on the board , greetings from Perú
I'll try to get that done.
Thanks again for sharing the video. Do you have a video where you're calling for heat? when calling for heat, do you use another general purpose relay or the sequencer?
Thanks viper. I was actually gonna try to get the next video to be on an electric heat unit. But to keep it short...i replace the OEM part whatever it is. Usually it is a sequencer or contactor for me.
@@johnjennings-JJ Thanks John, we need that video about sequencer wiring.
Mr.john Jennings what materials did you use my brother and what size is that plywood God bless you 🙂☺️
Nothing but a 1/2" sheet of plywood, cut 2 ft square or so. Propped up on wooden legs. Took contactors, relays, thermostat and mounted to the board. The only thing that cost real money in this setup is the banana plugs and wires to make it plug and play. I would just use regular 16 gauge wire and some terminal ends or something now.
@@johnjennings-JJ Hi John, Great video. If you can create a video on how to create this board. that would be grat! Thanks in advance.
Thanks for the video . I am clearly not an HVAC tech . I believe there are some older installs that did not have a Blue (common) wire. How can a t-stat function without the Blue wire return path ? My own system is an oil fired hot air furnace with a/c - using one x-former i believe . My t-stat is an older Honeywell digital programmable that works fine. System has five wires including a Blue wire that connects to terminal on t-stat marked Rc . T-stat also requires two AA batteries . Why does t-stat use two batteries if it has the Blue (common) wire ? After doing some additional research i understand that Rc and C are not the same so that is why the t-stat requires batteries . There is no jumper between R & Rc on the t-stat and there is no x-frmer in the a/c unit . I guess the big question for me is how can a t-stat function without a common (return path wire) ? i am thinking of a 1/p switch - it cannot work without a neutral wire / correct ?
Thanks Again
The batteries are what power the t'stat and let it work. With batteries you just need the 24v hot wire providing power into the t'stat switches. Like an old school mercury t'stat. The batteries make the switches move and pass the 24v to whatever you need to work. Depending on your e act setup you would only need 4 wires with batteries. I wonder what system you have...just an oil furnace with a/c? Nothing fancy?
To the point of the 1 pole switch...switches just break power. Either the L1 side or if you want, the neutral side. We usually break the hot for safety reasons but regardless, switches just break 1 side. Only electrical loads get both L1 and N or whatever the power source is.
good job
this was good
I was like why tf he pick up the yellow wire in the beginning when he was wiring up the thermostat
Hi John, thank you so much for your videos. They are very informative. I have noticed a low buzzing sound from my furnace. This buzzing started this winter just before the heater would turn on. The buzzing would last about 20-30 seconds before the furnace would turn on. Now I have noticed the buzzing again prior to the a/c turning on. The buzzing comes and goes before a/c turns on. Wondering if u think this could be the transformer or the fan relay switch?
The transformer is something that should have power 24/7. I have noticed that they do make a quiet buzzing sound sometimes but then again so does a contactor outside. Could be a relay on a circuit board. Sometimes the buzzing comes from a loose screw that may be holding a part or cover to the unit. Hard to say. Would have to be there or just wait and see if it stops working correctly.
Who needs a trade school, gonna build this up in the garage
...but trade schools are nice too! We built one with .25" black plexiglass and some standard banana plugs/wires. It turned out real nice.
love it
Where can i find the cables like those ?Whats the name of it?
Try looking up banana to banana patch cords. I am sure Amazon has a million of them. Just make sure to know what size the ends are if you are going to buy the connectors as well. I think sometimes they call them a turret.
👍
Where I can buy this type of cable
Lots of places online and in a store front. Try looking up banana to banana plug test lead...that should pull up something useful
@@johnjennings-JJ Thanks
@@johnjennings-JJ hi John , these are very useful videos. I am an HVaC teacher and I am planning to build one based on this model. I found the 16 wire gauge but let me know what are those hole contacts that are attched to the board where we hook up these wires to? Thanks in advance
Should be something like a "banana jack". I think last time I was looking at making some I decided I would just go to a big box store and check out the speaker wiring. Might be able to get everything there.
Or try female connector bindjng post for banana plug
It's a cool only system. I was expecting heat strip connection
Good
No sequencer?
This board just didn't have one. Put it in and wire it exactly like a relay would be. W from thermostat to low voltage "coil" and 24v common back to secondary of transformer.
How would you wire the indoor fan to come on after Heat kicks on?
Thank you
Manufacturers like Goodman use a high voltage wire connecting the heat strip circuit to the indoor fan circuit. One end is placed on the leaving side of the heat sequencer and the other goes to a normally closed switch on the fan relay. This way when the heat strip gets power it will also feed through the fan relay and turn on the fan.
Hindi
No se hoye no se escucha la voz
I think my volume on the camera was turned down for some reason. The audio is there but you might have to turn your phone/computer volume up a little higher than normal.
You are amazing keep this up