The primary and secondary windings are always totally isolated from each other, there is no electrical connection between the line (240 volt in this case) and the secondary load low voltage (24-28 volts) side, they are MAGNETICALLY COUPLED. All transformers except auto-transformers are this way. So there is no actual polarity on the low voltage secondary at all. No “hot” or “neutral” side, because one leg is NOT grounded like in the main panel with line voltage, nor is a 240 volt connection on the primary side, because both 120 volt hot wires are used, with no connection to neutral. Ditto on 208 volt, but the neutral and one of the 2 hots ARE connected to neutral with 120 or 277 volts which is 480 volts line to line, 277 volts line to grounded neutral. There is NO “positive” or “negative” on AC circuits, because it changes polarity 120 times a second on 60 cycles frequency. Since DC only goes one direction, you will have a negative and a positive, and current ALWAYS flows from NEGATIVE to positive, never the other way, so modern cars with negative ground are “technically” wired “backwards”. And our RUUD unit is pretty much all original from 1991! Runs like a champ still! Cheers Steve! 👍🏻
Steve, the low voltage side of the transformer will be isolated from any ground unless one of the legs of the low voltage is tied to the ground or chassis of the furnace in some way especially if none of the wires from the control are connected since I don't know if the control ties one side of the low voltage to the chassis.
Every time I see a tech stretch electrical tape it reminds me of one of my mentors years ago that always called me out and made me cut it with knife or scissors preventing it from unraveling.
One day Steve will have to tell us the story about his wife. How they met, how long they were together etc. Obviously they loved each other at one point, there must be some good memories.
I know exactly how to smoke a transformer. 😂😂 Sounded like a 💣 went off in the crawl space and smelled like somebody was roasting marshmallows down there. 😂😂
Why is the low voltage wiring not enclosed in flexible conduit? In CA, it's rare to see this. Most low voltage wiring is enclosed in 3/8 aluminum flex... And why is the low voltage wiring often unattached? I see it cable tied to the line sets..
Keep the old stuff running...Too bad for the weed growth getting like it was, cost him a service call and a few parts. Might benefit with a consener base/pad vs sitting on the damp grass full time. How ya duen ?
I liked how you explained everything, to the homeowner, what you were doing.
As always Steve great job I know that elderly lady appreciate you so much for getting her some cold air you and Molly take care
Watching this on a 95 degree day makes you feel good when you hear it power back up!
Tech tip mama install a fuse, so you don't cook the transformer... Steve you're the best!
Steve always puts the BLAST SHIELD back on before engaging power.
15:02 damn Steve, right into the mic! 🤣
oh what the hell was that, a "Frwog"?!
Steve for President!!!!!
Nice Fix and I’m sure the 90+ year old was Happy. 👍🙏
Another kick ass video Steve, keep them coming, as you remain safe! 💫💥💢👍☝️🫵
I *_ALWAYS_* appreciate a nice Fart, great timing after you asked the guy if he could smell it! I'm 65, going on 10...😆
Steve still at it dedication to his clients!
"Yeah I'll give ya a discount all right !!!!"
This situation is why in route the thermostat wire throughout 1/2 flex from the house to the outside unit to prevent sun, weedeater, dog damage.
The primary and secondary windings are always totally isolated from each other, there is no electrical connection between the line (240 volt in this case) and the secondary load low voltage (24-28 volts) side, they are MAGNETICALLY COUPLED. All transformers except auto-transformers are this way. So there is no actual polarity on the low voltage secondary at all. No “hot” or “neutral” side, because one leg is NOT grounded like in the main panel with line voltage, nor is a 240 volt connection on the primary side, because both 120 volt hot wires are used, with no connection to neutral. Ditto on 208 volt, but the neutral and one of the 2 hots ARE connected to neutral with 120 or 277 volts which is 480 volts line to line, 277 volts line to grounded neutral. There is NO “positive” or “negative” on AC circuits, because it changes polarity 120 times a second on 60 cycles frequency. Since DC only goes one direction, you will have a negative and a positive, and current ALWAYS flows from NEGATIVE to positive, never the other way, so modern cars with negative ground are “technically” wired “backwards”. And our RUUD unit is pretty much all original from 1991! Runs like a champ still! Cheers Steve! 👍🏻
STEVE! at 15:03,...was that you letting one loose?...
Steve, the low voltage side of the transformer will be isolated from any ground unless one of the legs of the low voltage is tied to the ground or chassis of the furnace in some way especially if none of the wires from the control are connected since I don't know if the control ties one side of the low voltage to the chassis.
Howdy Steve and Miss Molly
Steve you need to get on your pad a Tip screen 10% 15% 20% custom tip.
Add Mrs Molly's paw print on Bill 30% xtra
Every time I see a tech stretch electrical tape it reminds me of one of my mentors years ago that always called me out and made me cut it with knife or scissors preventing it from unraveling.
Thats so good you got all the encyclopedias Ill just call you. 😂 but man steve you give them guys too much secret information man!
Transformer from Kennesaw, GA - next town over from me! 😂
Helicopter Genius.
One day Steve will have to tell us the story about his wife. How they met, how long they were together etc. Obviously they loved each other at one point, there must be some good memories.
No, I think Steve was hurt badly. 😢
Good job Steve! Maybe a little new Armaflex.
How's the CPAP working? I had to get one at the start of the year, what a difference
The A/C unit was manufactured in May 1994
Nice job
Hello Steve!
I know exactly how to smoke a transformer. 😂😂 Sounded like a 💣 went off in the crawl space and smelled like somebody was roasting marshmallows down there. 😂😂
The smell of burnt lacquer on the windings is unmistakable.
Good job 👍
If it doesn't have a fuse and it bucks the transformer I always add a fuse on the secondary side
Somebody hit the wires with the weedwacker!
Got a stinka!
Why is the low voltage wiring not enclosed in flexible conduit? In CA, it's rare to see this. Most low voltage wiring is enclosed in 3/8 aluminum flex... And why is the low voltage wiring often unattached? I see it cable tied to the line sets..
Looks just like this in Florida also
@@The98deville Thanks!
Blow a fuse on the board??
Hello Steve
Manufactured by Armstrong in February 1994
Keep the old stuff running...Too bad for the weed growth getting like it was, cost him a service call and a few parts. Might benefit with a consener base/pad vs sitting on the damp grass full time. How ya duen ?
Im surprised you dont come across cut low voltage wires more often from weed whackers
Get the tablet out and give him a discount 😁
He has the liquid gold in that unit.
The Best: R22 & Windows 2000 !!!
Theirs your problem lady
steve that was funny
DITCHER...QUICK...AND HYDE..
My ac is a 99 still running on original charge
That customer seemed like a nice guy.
Retired IT engineer here. He’s been thru the wars, long enough, like me. On-Call weeks, always the worst.
Another damzel in distress.
The only tip I can give you Steve is don't swim on a full stomach
Artificial intelligence
Something about this customer irritates the piss out of me.
Hey Steve and Miss Molly! Workin’ again ya’ll. 👍👍
Steve rides again. Steve is one in a billion. I,d recommend wago wire connectors. Wire nuts suck.
Especially out in the elements?
@@daveliedholm2296they have waterproof ones available
Nah, Solder and heat shrink...🫡
Boo hoo! 😨😨😨
She’s a crusty one mamma!
Kinda ham fisted with the measurements guy.
Sell her a new unit.
No
4th
We need more real working man cooking videos!
Hah first
1st
Hello Steve!