I have been trying to wrap my head around this 208V and bit by bit understood parts of it but not well enough. I know a lot of other electricians struggle with this concept; and those that do understand the concept despite their best efforts have a difficult time explaining it to other. This is by far the best explanation I have ever seen and I've done a lot of looking around. You explain it so well and so clearly that I feel really dense I didn't understand this as I do know. It is so crystal clear that I don't see why I couldn't understand it. Thank you for putting this together. Love it! It is awesome!!!
Hi Wade thank you so much for the video, you really have a great way of explaining the subject with so much clarity and really make it easy for the viewer to understand!
The last sentence was incorrect. The two 120 volt phase to Neutral and phase to Neutral totals phase to phase 208 volts. With very few exceptions RV’s with only use phase to Neutral at 120 volts.
Przemek, You cannot make 240 from 208v. But an RV uses only 120v on all of its services. So whether that is provided by 120/240 service or 120/208Y, the RV 'sees' only two 120v services. WW
If you needed 240V for a specific device you could use what is known as a "buck boost" transformer. Most 240v appliances such as a large window or thru-wall A.C. are rated "208-240V" and will operate anywhere between 207-253V, but if the line voltage is a bit low or the unit wont start on a 208V supply one of these transformers will correct the issue.
@@tedlahm5740 240V is the typical"split phase" power in the U.S., the neutral is center tapped with to give you 2 120V opposite phases (180 degrees put of phase), which are 240V phase to phase. 208V 3 phase power is used for buildings with larger power needs or when theres a need for smaller 3 phase motor ( which is desirable because it delivers constant power/torque). Each phase is 120V to neutral, and 208V from phase to phase (120 degrees out of phase).
hey thank you so much for the video i just got into a shop for welding and was very confused on why i was showing 120 and 120 when going from faise to neutral but as soon as i tested faise to faise its showing 208,, Can i please get help on how to put a 3 wire welding plug i know i can do it when i get it explained but i dont quite understand how it needs to be wired yet if u can make a very fast video on how to wire in a 220 plug for my welder i will paypal you some money thank you!!! im a bit confused
Can 120/ 208v 3 phase generator power a 230v 1 phase welder without modification has 4 prong 120/208v 20amp receptacle beside getting an adpator from 3 prong welder plug to 4 prong from generator?
Theoretically you could use a variac or a transformer to boost the voltage of each phase by ~10% and keeping things balanced. Also, I believe most devices are designed to have 10% tolerance in the voltage, so you'd likely be able able to still run 208 as the lower acceptable end of the tolerance for 230V, but at the expense of putting more current through for any given power load being consumed. Best to consult a professional... you may also check the power input and see if 208V falls into an acceptable input voltage range, in which case it possible you'd be good to go. You'd be best to consult a professional if in doubt, and don't make any assumptions. For all we know, there could be some inherent flaw in putting hot to the neutral (because it was designed to be used as intended and using the design and safety standards of that time). Safety and design standards are always improving, but there's usually a tradeoff of some sort as a consequence, and just because something is supposed to or believed to be designed to those standards doesn't mean it actually is, or that it still doesn't have some undiscovered fatal design flaw, or flaw when used not as intended. Always observe safety precautions and use equipment only as intended!
BRENDAJASON1 if it says 208 that's a 3 phase oven, if its for a home more then likely you have the wrong type of oven, you need a 240 oven .. your best bet is get a electrician out there
Praise The Lord. Finally a great video on 3 phase power (and 240V power too boot)! Great information! Thank you so much!!!
Hey wade this is wade thank God for your video, straight up explanation finally I appreciate it so much .
I have been trying to wrap my head around this 208V and bit by bit understood parts of it but not well enough. I know a lot of other electricians struggle with this concept; and those that do understand the concept despite their best efforts have a difficult time explaining it to other. This is by far the best explanation I have ever seen and I've done a lot of looking around. You explain it so well and so clearly that I feel really dense I didn't understand this as I do know. It is so crystal clear that I don't see why I couldn't understand it. Thank you for putting this together. Love it! It is awesome!!!
Thank you John
I wish he would've went further into 3 phase 240
Nice having a real professional on here.
thanks for taking the time to make this video, and for laying it out plainly.
This video was VERY well and PROFESSIONALLY put together!
Great job, Sir!!!
Hi Wade thank you so much for the video, you really have a great way of explaining the subject with so much clarity and really make it easy for the viewer to understand!
That sure cleared up that issue. Thanks so much for your effort
Good job Wade and thanks for clear concise information...!!
Thanks Wade. Very informative.
Great video. Im a master electrician and you hit a lot of good key points. Thanks
The last sentence was incorrect. The two 120 volt phase to Neutral and phase to Neutral totals phase to phase 208 volts. With very few exceptions RV’s with only use phase to Neutral at 120 volts.
That's what he said
very clear and understandable , Thanks
How can you make 240V from 208V ? Even if you use only 2 phases with neutral wire ist still 208V between phases.
Przemek, You cannot make 240 from 208v. But an RV uses only 120v on all of its services. So whether that is provided by 120/240 service or 120/208Y, the RV 'sees' only two 120v services. WW
If you needed 240V for a specific device you could use what is known as a "buck boost" transformer. Most 240v appliances such as a large window or thru-wall A.C. are rated "208-240V" and will operate anywhere between 207-253V, but if the line voltage is a bit low or the unit wont start on a 208V supply one of these transformers will correct the issue.
Utility Supply Group Sir: then why does the video mention 240 volts? we do not see it on any of the drawings. thank you.
@@tedlahm5740 240V is the typical"split phase" power in the U.S.,
the neutral is center tapped with to give you 2 120V opposite phases (180 degrees put of phase), which are 240V phase to phase. 208V 3 phase power is used for buildings with larger power needs or when theres a need for smaller 3 phase motor ( which is desirable because it delivers constant power/torque). Each phase is 120V to neutral, and 208V from phase to phase (120 degrees out of phase).
@@onradioactivewavesin other words there IS no 240v 3 phase ?
A 3 phase Generator, can I wire a 120 outlet into the panel on it?
Wayne Holmes. I am not familiar with the nuances of generators to know if the ground and neutral are available. Sorry.
hey thank you so much for the video i just got into a shop for welding and was very confused on why i was showing 120 and 120 when going from faise to neutral but as soon as i tested faise to faise its showing 208,, Can i please get help on how to put a 3 wire welding plug i know i can do it when i get it explained but i dont quite understand how it needs to be wired yet if u can make a very fast video on how to wire in a 220 plug for my welder i will paypal you some money thank you!!! im a bit confused
Can 120/ 208v 3 phase generator power a 230v 1 phase welder without modification has 4 prong 120/208v 20amp receptacle beside getting an adpator from 3 prong welder plug to 4 prong from generator?
Sorry, I wouldn't know. My experience is in powering RVS.
Theoretically you could use a variac or a transformer to boost the voltage of each phase by ~10% and keeping things balanced. Also, I believe most devices are designed to have 10% tolerance in the voltage, so you'd likely be able able to still run 208 as the lower acceptable end of the tolerance for 230V, but at the expense of putting more current through for any given power load being consumed. Best to consult a professional... you may also check the power input and see if 208V falls into an acceptable input voltage range, in which case it possible you'd be good to go. You'd be best to consult a professional if in doubt, and don't make any assumptions. For all we know, there could be some inherent flaw in putting hot to the neutral (because it was designed to be used as intended and using the design and safety standards of that time). Safety and design standards are always improving, but there's usually a tradeoff of some sort as a consequence, and just because something is supposed to or believed to be designed to those standards doesn't mean it actually is, or that it still doesn't have some undiscovered fatal design flaw, or flaw when used not as intended. Always observe safety precautions and use equipment only as intended!
What is that amazing guitar music in the intro???
Excellent thank you
I’ve got a wall oven 4 wire inside the door it says 120/208 how do I go about hooking it up to a 200 amp breaker box
Best bet is to contact a local electrician to have them evaluate exactly your situation. Thanks for watching.
BRENDAJASON1 if it says 208 that's a 3 phase oven, if its for a home more then likely you have the wrong type of oven, you need a 240 oven .. your best bet is get a electrician out there
Neither of the drawings 240 volts? We know it is there on a star transformer
but not drawn? thank you.
Great explanation
good video Sir
This is what I call the "wimpy wye" system.
Phase to Phase 208 volt not 240 volt.
208 is single phase when I was in class. Idk
Depends what type of transformer configuration is present. 208 is a high leg (single phase) in certain systems
3phase 120/208 or 127/220 V is the best for houses, european 230/400 V its a dangerous!!