Excellent videos!! Thank You! I am surprised that at my work none of the crew wear Ppe and we deal with 277-480 volts !! I have learned more from you In 10 minutes than I have in a semester or any journeyman at work.
That level of PPE is unnecessary at voltages of 480 and lower. I have only suit up like that when dealing with higher voltage busses as an industrial electrician. With that being said, working in an horizontal panel like in the video does present additional safety concerns as he is work over top of the live lines.
Hey thanks for the video, I am an Electrical Field Engineer, I understand the electrical terminology. However seeing the actual Motor Control Breaker and unit really paints a bigger picture. Allowing me to understand the technician side of the work making it easier for me to understand his side and explain it better in my side. Both fields of study are very important in the Field. Thanks a lot again.
Thanks for this video. I went to a 5 yr apprentice program and this type of stuff they don’t teach. Should be able to learn on the job but maybe you cover once than just get stuck doing wire pull or cable tray for 2 years at a data center.
Just a tip. when you test the line side power or any power make sure that you pull both leads of the meter off so you do not carry over an arc when checking the other phases. Just a tip to keep you safe.
I was not aware of this hazard. I'm a newbie electrician and would like to get more knowledgeable on working/troubleshooting in panels along with associated hazards. What's a good online resource or book for this topic? That all covered in NFPA 70e? I haven't delved into that area much. Thanks
Great video, thank you for taking the time to make this. In the field, for the sake of time, I would do more half-splitting when checking for voltages. For example, I would have started by checking for mains voltage right at the starter, and only gone back to the breaker if I didn't have power at the starter itself.
Thorough troubleshooting, but it would have been much safer to test for any motor wiring shorts to ground before going for a motor start. Glad to see you promoting proper selection and use of PPE.
Great video ! It would be nice if you could do a demo video on how the Auto function works with a common problem like PLC signal missing or any other signal problem. Very good job showing the hand function of the motor! Will definitely check some of your future videos!
Wow, amazing explanation sir, I'm getting, or should I say, I'm learning a lot with this presentations. Thank you very much for sharing this, and for your time and dedication on doing this videos. God bless.
Some of our motor controllers have permissives which make it harder to troubleshoot. Especially in our galley where the control circuit is tied into fire switches, dampers, gaylord wash panels which has its own circuit, and fire pull down switches. Finding shorts is a nightmare where no indication of burns can be found, only thing you got is blown control circuit fuses. Thats why its good to learn to read electrical schematics and diagrams.
very good video the only thing that I would recommend is always to use the RED in the hot and the black always to ground. when troubleshooting 24v this can cause read errors for technicians
Doesn’t matter when measuring AC. I suggest a basic electrical theory class for you!! Besides if he were measuring DC it would simply put a - before the number. No big deal.
Very informative video! I loved the way you start from selecting the appropriate PPE before beginning your troubleshooting and the way the you undertake your measures problems solving by following the troubleshooting steps which is ABCDE. The problem with this wonderful video was that we cant see clearly what you're reading and how your turn your nob to either; Voltage, current and ohms when digging for the neutral line that was missing in the circuit.
Good video - as likely mentioned below, you need to check that all phases are fully pulling in on the contractor/starter. An apprentice will learn this VERY quick the first time they replace a motor only to find out it's a bad contactor. :D
Your awesome videos are very helpful. How do motors designed for both wye and Delta configurations change/switch from starting wye to running Delta? Please and thank you.
good video... as he covered all the steps. If he had checked across the NC contacts after he had checked both sides and received his control voltage then he would have known that the NC contacts were open. If it was closed he would have received 0VAC. Also I don't know what level is this but I think it would have been helpful if he explained what the "holding contacts "were and there purpose.
Ive had to check a lot of these. I would check the overload for tripping first. Then the 480 V fuses and then the motor for grounds. I found that rarely did the control circuit had problems.
Appuraj, Thanks for commenting on the video. we will be putting out more content regularly. we are currently trying for once a week. There will be a new VFD video coming out tomorrow morning, so stay tuned.
I would suggest testing for a short (grounded conductor) or megging the motor first before turning the HOA to hand or pressing the start button....good video though!👍
Just a word from a pump guy. The only testin you need the power on for is the legs and transformer. All the rest can be done with the power off and the meter set on ohms. Dont just meg a motor, ohm it across the windings as well. You can at least give the customer an idea of how much life is left in the motor or pump.
Thanks for commenting madfrogs! On several of the videos we show the schematic at the same time I am going over the physical wiring. Check out this for an example of what I am talking about. th-cam.com/video/kHbXbK7S188/w-d-xo.html. Also, the video coming out this week will also have a schematic and live wiring example of a forward reversing starter.
I just had to diagnose a starter where the coil in the contacter wouldn't release. There were three disconnects with stop/start controls. On one of the disconnects, the hot of the stop button broke off and was making contact with the line side of the start button, bypassing the stop buttons
Hello. Why did you test closed contact by measuring both 95 and 96 from holding contact? Is there any other way to measure it without measuring it from holding contact? Thank you for your very helpful videos
I have 4 mixer motors at a WWTF. I have had to turn the yellow amp adjustment from 8 to 14 amps to keep them running with out tripping. 1 of of them however now runs for 1-3 mins then trips everytime. Pulled and megged motor. It is good. Voltage is good and consistent with other mixer motors. I have not seen Amps above 7 on anyof the motors including the one tripping. Any suggestions? Going in circles with Evoqua. Plant is 1 year old. All ran good first 6 months then developed issues after that.
I'm sure this is a dumb question, but when testing the hand mode switch and start push button, I see the black lead you were using but where was the red lead?
@Angel----You will feel a moment of intense pain and then will fall in the direction of the missing leg.How unfortunate that with the suit of armour he as decked himself out with that it blows off his leg,can't win them all.
parmathwal99, the voltage across the Normally Closed Stop button would have the same potential on both terminals, so it will not register on a meter measuring between those two points. But if you measure to the neutral at the transformer, or before the tripped overload, to the Stop button you will have 120 volts. Remember that you will still have voltage at the stop button and it can still shock you but you won't see voltage on your meter if measuring from a point with the same potential.
I wanted to be able to learn something form this. The problem is when you say "sorry it's hard to hear me but obviously I have a face shield on" and then you decide to put music in the background... how much harder do you think it was to hear what you are saying. This is a learning video, not a disco tech dance. Other than that, this is an amazing video! Thanks for your time in making this.
Walter, circuit energize and pulls in the contractor immediately when powered. I have wired in multiple push button stations and buttons have no control after wiring in multiple push buttons. I have a time delay and a latching relay. I was running into a situation where I could not take my finger off the start button. Now it is continuous. I traced wires and everything seems to be in order. Could a relay be burned in ?
Somehow you either have power from your start buttons supplying your coil when the buttons should be open, or you holding relay is closed and immediately energizes the coil. Pull the jumper from the coil to the holding contact off. Turn on power. If the coil closes then the problem is on the start button side of the circuit. If the starter does not start then the problem is on the holding side of your circuit.
277 volts 554 volts. i wonder if they will cause motors to burn up and started to go out faster kinda like the 120 volt incandescent lightbulb, and most houses are at 127-130 volts.
Really good video...just an observation looks like it's permissible in the US to use probes with excessive metal showing ? This would be shunned in the UK although it does occur here amongst some pros.
Thank you for your comments. Requiring test equipment and overall electrical equipment to be finger safe is much further along in the UK and in the rest of Europe than in the US. I think there is some movement in that direction, but we are not there yet.
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This video should be used to train any motor controls tech. Took me years to get to this point, this would’ve saved a lot of trial and error.
Me as well. I spent 12 years as a locomotive technician and had to learn a lot on my own. Good video.
this is one of those rare gems you find every once an awhile. thank you so much for this video walter!
Hambone. thanks for your very generous comment. it's very much appreciated!
Excellent videos!! Thank You! I am surprised that at my work none of the crew wear Ppe and we deal with 277-480 volts !! I have learned more from you In 10 minutes than I have in a semester or any journeyman at work.
That level of PPE is unnecessary at voltages of 480 and lower. I have only suit up like that when dealing with higher voltage busses as an industrial electrician.
With that being said, working in an horizontal panel like in the video does present additional safety concerns as he is work over top of the live lines.
I mean I agree we don’t use that much PPE either but if you follow OSHA this is what you get
Hey thanks for the video, I am an Electrical Field Engineer, I understand the electrical terminology. However seeing the actual Motor Control Breaker and unit really paints a bigger picture. Allowing me to understand the technician side of the work making it easier for me to understand his side and explain it better in my side. Both fields of study are very important in the Field.
Thanks a lot again.
You have definitely earned my subscription! Seeing the troubleshooting process "step by step" really made the knowledge click for me. Great job
Thanks, I'm a field testing tech, but I have long ways to go. This helps me that's why I watch your videos.
Glad these videos are helping you. I appreciate the feedback
Well I must say this is the most informative video I have every seen. With hand on on demo. Thanks
Thanks for the great comment!
Thanks for this video. I went to a 5 yr apprentice program and this type of stuff they don’t teach. Should be able to learn on the job but maybe you cover once than just get stuck doing wire pull or cable tray for 2 years at a data center.
I agree. Thanks for leaving the comments. Glad the video is helpful
Just a tip. when you test the line side power or any power make sure that you pull both leads of the meter off so you do not carry over an arc when checking the other phases. Just a tip to keep you safe.
I was not aware of this hazard. I'm a newbie electrician and would like to get more knowledgeable on working/troubleshooting in panels along with associated hazards. What's a good online resource or book for this topic? That all covered in NFPA 70e? I haven't delved into that area much. Thanks
Read the NFPA70E handbook that will get you started in the right direction.
Dude Thanks for the call out on the NFPA cat levels & what it needs to be compliant.
Just another tip, always check the leads to your meter and make sure there are no nicks in the conductor insulation
One time I was testing voltage, 90vdc, found out meter was bad. I check on known voltage to check meter.
Great video, thank you for taking the time to make this.
In the field, for the sake of time, I would do more half-splitting when checking for voltages. For example, I would have started by checking for mains voltage right at the starter, and only gone back to the breaker if I didn't have power at the starter itself.
Chris Lawson great point. This will spread up the trouble shooting process.
Awesome video! Just wish you can see the meter display while doing the voltage checks. Will definitely check out some of your other videos.
thanks for the comments. I appreciate the feedback.
Nice video. After testing if voltage at coil. Shut down disconnect wires to coil and ohm coil. Sometimes it's bad.
Thorough troubleshooting, but it would have been much safer to test for any motor wiring shorts to ground before going for a motor start.
Glad to see you promoting proper selection and use of PPE.
Thank you for this video. I wish school focused on this topic, but I’m sure my new job will train me in this aspect.
Great video ! It would be nice if you could do a demo video on how the Auto function works with a common problem like PLC signal missing or any other signal problem. Very good job showing the hand function of the motor! Will definitely check some of your future videos!
Sire please how can I troubleshoot an Smc flex soft starter tripping on fault 18 no load. Please help me out. Thank you.
Wow, amazing explanation sir, I'm getting, or should I say, I'm learning a lot with this presentations.
Thank you very much for sharing this, and for your time and dedication on doing this videos.
God bless.
What a good video and nice gentleman. Thank you very much.
Finally got the right lesson. Very simple and important
Great video! My instructor recommended watching.
Such a gem of a video
Yeah safety is first, but in my type of business we wouldn’t get anything done with all that on...thanks for the video
Stickeler Winner where do you work the burn treatment center?
That's OSHA for ya
Some of our motor controllers have permissives which make it harder to troubleshoot. Especially in our galley where the control circuit is tied into fire switches, dampers, gaylord wash panels which has its own circuit, and fire pull down switches. Finding shorts is a nightmare where no indication of burns can be found, only thing you got is blown control circuit fuses. Thats why its good to learn to read electrical schematics and diagrams.
That does sound like a nightmare. Honestly I feel like we are using flawed systems in the us at least some of the old ones.
Awesome video, awesome channel! You're truly changing lives with sharing your knowledge
Jake Lesperance thanks for your comment. I appreciate it.
very good video the only thing that I would recommend is always to use the RED in the hot and the black always to ground. when troubleshooting 24v this can cause read errors for technicians
Doesn’t matter when measuring AC. I suggest a basic electrical theory class for you!! Besides if he were measuring DC it would simply put a - before the number. No big deal.
my comment was for technician on control system and not for just a simple electricians
@@lalotrbeca so let me get this right....What you are saying is that your comment was pointless?
Thank you. I'm a new mechanic. i've learned a lot from your videos.
Very informative video! I loved the way you start from selecting the appropriate PPE before beginning your troubleshooting and the way the you undertake your measures problems solving by following the troubleshooting steps which is ABCDE. The problem with this wonderful video was that we cant see clearly what you're reading and how your turn your nob to either; Voltage, current and ohms when digging for the neutral line that was missing in the circuit.
Excellent video,many thanks for this wonderful information
Super educational very informative. Do you have some of the best videos on TH-cam for electrical applications. Thanks
Before testing to ground it is always good practice to test ground to ground to make sure you have a good ground
Thats stupid how are you going to measure ground to ground when your not sure if you have a good ground
That's rather useless. There's no potential either way whether you have a good ground or not. You will see 0 volts in both instances... Nice try
Test the resistance on the ohms settings. Come on lads. Use your nogging
@@bendoherty7721 still doesn't yeild reliable results as a low resistance does not garantee current carrying capability.
Great tutorial video and very informative .Thank you
Absolutely amazing quality video and explanation.
Thank you
Very good video, please continue 🎉
Good video - as likely mentioned below, you need to check that all phases are fully pulling in on the contractor/starter. An apprentice will learn this VERY quick the first time they replace a motor only to find out it's a bad contactor. :D
What is the method for checking?
*contactor not contractor
Your awesome videos are very helpful. How do motors designed for both wye and Delta configurations change/switch from starting wye to running Delta? Please and thank you.
good video... as he covered all the steps. If he had checked across the NC contacts after he had checked both sides and received his control voltage then he would have known that the NC contacts were open. If it was closed he would have received 0VAC. Also I don't know what level is this but I think it would have been helpful if he explained what the "holding contacts "were and there purpose.
Ive had to check a lot of these. I would check the overload for tripping first. Then the 480 V fuses and then the motor for grounds. I found that rarely did the control circuit had problems.
great video Walter.
Thanks a bunch bro
Great video. Please also do a video in trouble shooting VFD panels
Appuraj, Thanks for commenting on the video. we will be putting out more content regularly. we are currently trying for once a week. There will be a new VFD video coming out tomorrow morning, so stay tuned.
GREAT WORK MY FRIENDS
Wow, want more control panel troubleshooting Video 💖💖💖
While it's a decent video I'd suggest a follow along ladder diagram
Did you ever receive a diagram?
@@justinhosmer2500 nope lol
Great information and well taught
I would suggest testing for a short (grounded conductor) or megging the motor first before turning the HOA to hand or pressing the start button....good video though!👍
This is a very good point to point video. Thank you.
This is very useful thank you 😊
Thank you, I appreciate your comments. Glad the contact was useful
follow the power. that easy. great vid!!
Thank you for the video,
Your welcome
Hi, I like your video. Thanks
Just a word from a pump guy. The only testin you need the power on for is the legs and transformer. All the rest can be done with the power off and the meter set on ohms. Dont just meg a motor, ohm it across the windings as well. You can at least give the customer an idea of how much life is left in the motor or pump.
Great videos, thank you! Is there any way we can see the wiring schematics? I'm sure it's basic, but I'm new, learning and curious. :)
Thanks for commenting madfrogs! On several of the videos we show the schematic at the same time I am going over the physical wiring. Check out this for an example of what I am talking about. th-cam.com/video/kHbXbK7S188/w-d-xo.html. Also, the video coming out this week will also have a schematic and live wiring example of a forward reversing starter.
I just had to diagnose a starter where the coil in the contacter wouldn't release. There were three disconnects with stop/start controls. On one of the disconnects, the hot of the stop button broke off and was making contact with the line side of the start button, bypassing the stop buttons
Nice job
Hello. Why did you test closed contact by measuring both 95 and 96 from holding contact? Is there any other way to measure it without measuring it from holding contact? Thank you for your very helpful videos
Wish i cud see the readings... amazing video
Great video 👍
great guide for biginers. thanks
That was awesome! Thank you
Thank you
great video, thank you for your expertise!
Great job! Thank you so much!
Good video. Very informative. I may have done it a bit differently, but a good informative video.
Very helpful....please make more
A diagram, also showing the reading of your damn while you’re testing!! Would be beneficial to the viewer.
Excellent vid
Thank you for your comments. I am glad you found the video helpful.
Thank you for share your knowledge. Great video
Appreciate the video! Thank you!
Brilliant please make more videos of installation too. Thank you
I have 4 mixer motors at a WWTF. I have had to turn the yellow amp adjustment from 8 to 14 amps to keep them running with out tripping. 1 of of them however now runs for 1-3 mins then trips everytime. Pulled and megged motor. It is good. Voltage is good and consistent with other mixer motors. I have not seen Amps above 7 on anyof the motors including the one tripping.
Any suggestions?
Going in circles with Evoqua. Plant is 1 year old. All ran good first 6 months then developed issues after that.
Excellent video
Thank you very much!
When you check for power on the switch did you have the other rod on ground cause I just see the black one?
When you were testing the power button, where dod you have your red meter lead?
Good video very helpful Big T
Superb. Thank you
great video! learned alot!
Great video man!!
Very useful.. Thanx...
When testing power to the hand off auto did you go to power to ground?
Thanks for video, question how can someone find a ahu motor size from the starter in a 460 volt panel box?, thanks
Very good video. ❤
I'm sure this is a dumb question, but when testing the hand mode switch and start push button, I see the black lead you were using but where was the red lead?
Great video
Great video. How you check when you lose a leg
@Angel----You will feel a moment of intense pain and then will fall in the direction of the missing leg.How unfortunate that with the suit of armour he as decked himself out with that it blows off his leg,can't win them all.
Good video...but I would have checked my motor leads to ground before re-energizing the circuit.
Question, why is your neutral and ground not color coated, they are both red ?
Thanks
Great vid sir! Would the stop button give a voltage across the Stop button on a tripped Overload?
parmathwal99, the voltage across the Normally Closed Stop button would have the same potential on both terminals, so it will not register on a meter measuring between those two points. But if you measure to the neutral at the transformer, or before the tripped overload, to the Stop button you will have 120 volts. Remember that you will still have voltage at the stop button and it can still shock you but you won't see voltage on your meter if measuring from a point with the same potential.
@@AccessToPower its For an exam question where they ask what device will measure 120v if the OL trips in the control circuit
@@US-Warrior I see. Both sides the stop button will still read 120 volts when measured to ground or the neutral before the OL contacts.
I wanted to be able to learn something form this. The problem is when you say "sorry it's hard to hear me but obviously I have a face shield on" and then you decide to put music in the background... how much harder do you think it was to hear what you are saying. This is a learning video, not a disco tech dance. Other than that, this is an amazing video! Thanks for your time in making this.
Great video... but you should test phase to ground first. Not phase to phase. People have injured themselves going phase to phase first
What should your reading be then? Up and coming maintenance mechanic, I like to learn these tricks of the trade
@FRJ1982 ur reading should be your full supply voltage divided by 1.7 for each leg. Eg: 480v would give u 282v per phase which is 277v
@@1HUNNETb I appreciate your input, so a 240v should have a 120 per leg reading I'm guessing?
Walter, circuit energize and pulls in the contractor immediately when powered. I have wired in multiple push button stations and buttons have no control after wiring in multiple push buttons. I have a time delay and a latching relay. I was running into a situation where I could not take my finger off the start button. Now it is continuous. I traced wires and everything seems to be in order. Could a relay be burned in ?
Somehow you either have power from your start buttons supplying your coil when the buttons should be open, or you holding relay is closed and immediately energizes the coil. Pull the jumper from the coil to the holding contact off. Turn on power. If the coil closes then the problem is on the start button side of the circuit. If the starter does not start then the problem is on the holding side of your circuit.
277 volts 554 volts. i wonder if they will cause motors to burn up and started to go out faster kinda like the 120 volt incandescent lightbulb, and most houses are at 127-130 volts.
Thank you sir!
Walter, I assume you're still buying C-H controls from Willie Electric?
Do you have the diagram for the motor 480, 3-phase start/stop?
Great video!
Thank you!
Not to be nit picky but I believe it's pronounced Ba-la-cla-va. Otherwise great tutorial!
Great video. Do you plan to post more videos.I hope so.
Yes, I hope to make more videos. Thanks
Really good video...just an observation looks like it's permissible in the US to use probes with excessive metal showing ? This would be shunned in the UK although it does occur here amongst some pros.
Thank you for your comments. Requiring test equipment and overall electrical equipment to be finger safe is much further along in the UK and in the rest of Europe than in the US. I think there is some movement in that direction, but we are not there yet.
Thanks bud
Wondering if you could do a video on megging out a motor? Thx
Thank you for suggesting the video for megging a motor. I will try to do that soon.
Tim I have a LC1 D12 from Telemecanique that I have isolated and I get resistance reading on the coil leads, does it mean the starter is bad?
You should have resistance across the coil of the starter.