Excellent video as ever. Sorry to be a pedant but the title says "Contactor" and the caption at the start of the video says "Contractor". /pedant mode :)

I must say guys, I'm very impressed with your style of teaching how this works. I'm an electrician of 20 years and very familiar with contactor control but I found this fascinating to watch. I wish my tutors back in the late 90's were as thorough as you guys. Great stuff!! :)

UNREAL LADS YOUS HAVE FINALLY EXPLAINED THIS ...IM QUALIFIED OVER 20YRS AND NO ONE COULD WVER EXPLAIN THIS WHEN I ASKED THE QUESTION THEY WOULD SAY IT JUST DOES

Thanks for another great explanation. Important to note what he says at 8:26 that sharing the neutrals is only for simplifying the diagram, you'd actually run separate neutrals for each circuit. If you actually only ran one back to the board (with separate circuits / breakers as shown) you would have shared or borrowed neutrals which is potentially dangerous.

Great video been a spark for 25 years and never really picked up contractors and relays struggled a wee bit on a job with them but these videos just refresh your knowledge back to college lol 😂 thanks

It's impossible never to learn anything from each video i watch, great work guys.

That was the best explanation of a contacter I have ever seen I could even understand it for the first ever and the drawing is so clear I'm giving all three of you a distinction please keep the videos and information coming it is so important to us trainees { all ages} thanks for going that extra mile guys its very much appreciated 🥇

I learnt to do this a week before I saw this video,only because where I worked had two way switching through a contactor, I knew one of the commons of the two way switch had to go to the A1 of the contactor but this video really explains how the two way switches, switch on and off the contactor... Great video Guys..

I never knew it was so straightforward.

This for a noob, has to be in the top 10 of videos for learning/understanding. Thank you so much for explaining exactly like you did 😊

Awesome, you guys are the best electrical training channel on KZfaq

Great teaching aid and very relevant to me on my level 3 journey so a big thanks to all of you. Love seeing things all drawn out in easy to follow wiring diagrams as helpful to understand what each part is doing and why

Brilliant! It's great to see you guys making quite complicated concepts easy to understand. Can't wait to see the practical demo.

Best video explaining how contactor works and how to wire it.

Im from South Africa busy with my trade practicals I must say this was a very great video on how to controls the circuit with a contactor to get more amp's to supply greater loads 🖤🖤🖤🖤✊🏾

Great vid. Maybe worth mentioning that the contactor has a 240v coil in this instance. Don't want to go sticking 230v into a 24v coil. And the numbering on the contactor is indeed 1L1 3L2 5L3 2T1 4T2 6T3. Normally open or normally closed. And the additional use of the auxiliary contacts 13-14, 21-22 could be used as an indication lamp that the circuit is energised. Can't wait for the practical Vid.

Absolutely brilliant video, all three lecturers explained their specific sections very well.

Excellent video. My favourite KZfaq channel by a mile

Well done. Clear, coherent and concise. 👏

Great work and easy to follow, your students are lucky.

Great video lads. You guys put other training institutions to shame!

Love this Gaz!! Great video chaps...👍🏻

What a nice explanation and teaching method. Really appreciate ur EFFORTS GUYS.

Great bit of content guys. It’s been some help.

well done matt well put together

Brilliant video. Great learning resource. Merry xmas to you all.

Nice and clear explanation Thanks so much

Gaz has a 80's 'Soul Belt' thing going on..lol and a great Vid Guyz

Very good I have had another Eureka moment with electrics thank you

Thank guys for helping me am south Africa l can understand now about contactors 💓✌🏾

Thank you Matt 👍

Thank you indeed for the lesson. Would you keep continuing to post lessons on controls, for instance control panel controls bms? Would be great if your college would run courses for BMS controls for HVAC engineers.

Thanks a lot for all your very useful information

Good job 👍 I carry out commercial maintenance one problem I come across regularly is “bms being installed onto non essential distribution boards ie 70% lighting in a large commercial premises. When these alterations have been made the provision for a permanent supply for emergency lighting has been overlooked! On the plus side no pun intended generates more work for me.

Great video to prepare for my Level 3 course. 👍

love it the way all is explained..Very clear and easy to follow and understand.. Cheers

Great work guys👍🏾

Excellent presentation. Very lucidly and succinctly explained. ⚡👍

Very well explained. This dude could b a professor

Nice easy explanation. I just did one with same three pole contactor with a key switch and time clock for outside lights on a large block of flats

Excellent explanation. Thank you

This is excellently put

Great vid team!

Great well explained video for learners keep up the good work👍

Fantastic job 5 ⭐️ Thank you

What a great video thanks guys you really make it so easy to understand well done

Well explained video keep them coming

Awesome! This is manual type of switching, however, for automatic switching of commercial buildings, motion or presence detection sensors are used.

Awesome explanation! Thank you so much. Can we please get a explanation video on wiring a lighting control circuit including Auto Off Manual, timer, sensor and emergency lighting please

Excellent very clear video. Thanks for uploading. Great to hear stuff explained in such detail as others have said your students are very lucky

Not just for lighting either. I recently set up a situation where the lighting circuit (on a timed switch) ran the lights plus the coil side of the contactor and the socket circuit ran on a radial through the contactor. This meant that when the lights timed out and went off, so did the sockets, thereby guaranteeing nothing could be left on unattended in the area.

Amazing explanation we'll done you king

Very good explanation of contractor and workings of the coil

Could you guys do video how to do a test of lighting circuit with contactors, will be well appreciated 👍🏼Great video💪🏼

Fantastic explanation. Those contactors do go funky sometimes and make a buzzing, if they do a thermal camera can pick up issues early. Also was that Thor!?

Fanastic content thanks again

Brilliant !

excellent.......expect more

Loving the videos guys , keep up the good work 👍 Wish I had these when I did my apprenticeship.

Thank you love this video perfect and understandable explanation

The best explanations for a contactor.Can I add a photo cell into this application.?And would it be spliced together whit the switches?Or difrent wireing need to be applied? (In series or in parallel) Thanks and cheers guys.

Thank you so much brother please help me with this knowledge I'm said from Zanziber in Tanzania

Great video

Great explain. Many thanks.

Great video. Not a criticism, but I would also clarify that in large buildings like that the lighting isn't wired in straight lines as shown in the diagram. Each of the phases L1, L2 and L3 (or R,Y and B) should be spread across the three lighting banks.

Thanks. very informative

Great job. Thanks.

That's the perfect way to connect a contactor in three phase

Great detailed video just what I've been waiting for, heating/boiler wiring next ? Also how do you select rating of contactors ?

Cool video 👍👍

love the video, how ever in Australia we need RCBO'S for any circuit under 40amps. How would you use RCBOs in this ?

Thanks a lot, this exlains so many things to me!!

great video gaz

Thank you sir for the explanation

❤️💚💙💜🧡🇿🇦Great work guys am from South Africa l can relate to anything you are teaching us big love to all of you please can you show when those lights are connected to a 11pole relay next video???how relay operates thank you mate

Brilliant! You lot made that so interesting, thank you.👍

Proper helpful video nice one

Good video! Very helpful ! One question - How you choose to use 3 single pole breaker , instead of 1 three pole breaker? Thank you! 🎉😊

Another thing worth mentioning is that the contactor illustrated by Matt, is a N/O (normally open) contactor.

I wired up a contactor to switch two supplies (a.c. mains and a.c. mains generated by solar PV) to one load - my hot water cylinder. So when the sun is shining one set of contacts supplies electric from the sun to the cylinder. When it's dark, a mains spur activates the coil and switches the a.c. mains on to the h/w cylinder, so the one circuit 'makes' and the other 'breaks'. It works fine and is another example of switching high current (well, 12 amps, high for domestic I suppose). I will blow myself up one day, but I just cannot get an electrician for love nor money where I live. :) :)

Brilliant video guys, can i ask 2 questions please, first what should be the rating of the contactor based on the load of all the lights? Second why did you use individual mcbs instead of a three phase mcb? Thanks

So helpful thank you!!

Very good

Love it

Great vid. But it would be fantastic to see the design calculations, for a given installation :-)

Brilliant. Why weren’t you guys around when I trained 😀

Well done sir

would you recommend wiring the lights in a 2.5 now because of load on each circuit?

Great explanation. Regarding sizing of the contactor itself,.do you size it to the full load capacity? In this example a 60A three pole contactor? Thank you guys, much love from Australia

hi guys, enjoying the videos! please can you add a link to the video where your in the workshop connecting up, i cant seem to find it?

Nice idea good U didn't tell us the size of the wire to be used for incoming line of the contact ore u select 20 amps fuse ,

That was awesome, i mean i really liked the video

totally cleared things up for me in understanding the beauty of contactors but does 2 way mean 3 way and are the "strappers" travelers and why is "4 way" written in the panel drawing? please explain 4 way in a 3 phase panel? thank you

Thankyou sir

Is it possible to have all of the lights controlled by this contactor, but also have them switched individually?

How can someone do a thumbs down, obviously they know it all.

Can you make a video where when the lighting contactor is wired with a emergency contactor. When lights go off emergency turns on?

The live that goes into the 10amp switch did it come from a separate breaker or... Im abit lost there. Rest i understand. Thank you

Would this be the same wiring I’f you swapped the light switch for an emergency stop?

Hi, could you incorporate a perm live for emergency lights and key switch ?