Arc Flash - explained!
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- Опубліковано 7 лют 2025
- What is Arc Flash?
Read about its causes and prevention here: elecsafety.co....
Right now, we're offering a free arc flash pre-assessment: elecsafety.co....
This arc flash video explains How to Prevent, Protect and Assess Risk.
Electrical Safety Management is our core business. We provide expert consultancy and advice for blue chip organisations across Europe concerned with the safe management of risk associated with all electrical work activities. ESUK provide a multi-faceted holistic approach including a full electrical safety management program, project management and policy documentation all bespoke to the client’s requirements including fully accredited and bespoke training courses and personnel assessment programmes.
ESUK are the UK’s foremost exponent of Arc Flash Technology and carry out a wide range of power system studies across Europe, including short circuit, protection coordination and complex Arc Flash Studies. ESUK are also a reseller for EasyPowerTM power systems software & support.
Electrical Safety UK offers a range of cost effective services including:
Expert advice in general electrical safety on site or in factory premises including translation.
Bespoke safety rules specific to your operation.
Live working Arc Flash studies including labelling and hazard calculations.
Bespoke training for your engineering staff & contractors specific to your procedures and rules.
HV & LV operational; coaching and training.
Independent incident investigations.
Electrical design, protection and fault location training.
Carry out periodic audits and site assessments.
Control of HV Contractors & Access to Substation Training.
As part of the Electrical Safety Management process it is essential to ensure that employees and associated contractors are competent. ESUK offer accredited and bespoke training courses and personnel assessment programmes including City & Guilds, IOSH, SPA (Safety Pass Alliance), Energy and Utility Skills. ESUK is also registered with the EEIAS - Energy and Efficiency Independent Assessment Service and CIPD for recognition and accreditation of all training courses.
ESUK and its team of Assessors and Trainers understand the need for flexibility when dealing with delegates of varying abilities, skills and knowledge. Being able to adapt to situations that may be challenging to assist a candidate to achieve their own personal development goals whether they are Individuals, Commercial Organisations or working in Utilities.
Find out more: ow.ly/kGyP50HxI8t
©2018 Electrical Safety UK Limited. All rights reserved. No part of this video may be reproduced in whole or in part in any manner without the permission of the copyright owner.
Bro they gave us John's whole back story before showing us how he died, definitely top 3 saddest deaths in anime
Wow spoilers... Fuck!
That was so you'd feel like you & John were friends & you'd be devo when he was killed,but on the bright side,we can bang John's hot Missus now that she'll be needing a shoulder to cry on!😆😆🤣
Its not a joke man honestly, its supposed to make you feel for the workers and stress the importance of work place safety for blue collar workers.
In this arc-flash simulation, the electrician died for three reasons....
1. He failed to make sure that the spanner wrench would never, ever drop into the conductor, usually by using wrist harness bungees that will keep the spanner in place.
2. Sadly, he failed to make redundant or backup confirmations that the equipment was de-energized for sure, and my guess is that he failed to find a second or backup disconnect to really de-energize anything at all. The mantra - everything needs to be de-energized before doing anything! Not just a portion!
3. He also failed to wear the proper arc flash protection. His electrical outfit had no chance against the calcium-produced arc-flash heat of the accident. He should have worn PPE designed for arc flashes that had a rating of 40 or more.
great summary brother
My co worker just got damaged by arc flash and it is unbelievably horrific, may this won’t happen to any body else. If you read this your prayers is apreciated
Is he recovering? 🙏
Truth Be Bold he is completely fine. Thanks for asking
I've been through it- personally. I wouldn't wish it on anyone.
what voltage was he working on?
We're sorry to hear of your coworker's incident and wish them a speedy recovery
Their faces has recieved an arc flash
Respect, for your education technique 👍🏾 I love it.
Thanks for watching
@@electricalsafetyukltd2067can i make a question about flash arc?
very touching , PPE is very important and will always save the life of people.
kabangu washiye and lock out tag out.
PPE is the last resort. Does not make you invincible
The narrators tone of voice and the style of the animation makes this tragicomical.
"John has a boss."
"John has a family."
"John did an oopsie."
"Now John is dead. His family cries around his deathbed. Sad. That John is now dead."
Quite informative thank you, I wish to get more video that you made before and you going to do in future.
important message, but creepy characters.
What is the arc flash rating of metal sheets used in panelboards and switchgears based on material used and thickness?
What is the cal/cm2 ratings of metal sheets based on material and thickness?
I just came from a video where a switchgear can flashed over even though it was closed and no-one was there working on it. In that case, there was no tool to be dropped onto live conductors. Any idea what may cause an arc flash in such an incident?
All arc flash events require an initiating event, a bit like with arc welding, some event has to strike the arc, after which the arc can sustain through the gases produced by the initial arc providing there is sufficient arc fault current. It is difficult to determine what the initiating event was in the video you reference but we would suggest that one failure mechanism could be insulation failure either internally within the breaker or at or near the breaker terminals.
An arc flash can occur under various conditions, including:
1) Opening of an isolating device under load conditions which is not rated for interrupting load current
2) Failure of insulation
3) Accidental contact, such as dropping tools into panels etc.
Although many arc flash incidents occur due to worker activities, maloperation of switchgear and deterioration of insulation can also cause an arc flash to occur, potentially with covers in place and the switchgear appearing to be in a normal condition.
Every situation is different, and there are many factors to take into account. This is something that we are able to assist with.
@@electricalsafetyukltd2067 Awesome, thank you so much for your thoughtful response and great content
Please make more video like this, don't forget english sub.
many thanks
Can you get arc flash by switching 230v/400v MCCBs or other switchgear
Hello @ja_adam_,
1. Yes, however single-phase circuits (240Vac) are not part of our arc flash studies as it can be demonstrated that the arc flash hazard is sufficiently low as not to present a significant risk of injury due to arc flash.
2. Yes, three-phase 400Vac circuits are included in our arc flash studies as the arc flash hazard can be significant on these types of circuits, in fact very often the hazard at 400Vac is often higher than at above 1000Vac.
However, it should be noted that modern LV switchgear is very often designed not to expose operators to arc flash hazard during normal operation of the switchgear, provided the equipment is in good condition, properly maintained and operated as per the manufacturer’s instructions.
Feel Free to email us at arcflash@elecsafety.co.uk should you wish to speak to one of our engineers about any queries you have.
May I know why did the arc flash still happened even though the power was shutdown as shown in the video?
Looks like the spanner dropped into the live side of the main switch, the consumer side of switch is shut off but live is still going to switch.
being an electrical engineer for more than 20 years.. this is the first time knowing that people work on “live” system internal gears …🤔
Why didn't the breaker trip when the 2 phases shorted out?
First thought, Jeff looks like Odo from Star Trek: DS9.
0:36 electrician kills power to the panel he's working on and tests to verify, but drops a wrench into an unprotected live panel which shorts that circuit.
You complete the circuit.
Good work
Damn it John 😭😭😭
Great video. The animation is brilliant
Also why do you not get this on domestic consumer unit
Hello @ja_adam_,
Hopefully, our reply to your original query has answered this question. Feel Free to email us at arcflash@elecsafety.co.uk should you wish to speak to one of our engineers about any queries you have.
If John shut the power off, then why would dropping a wrench between phases create such a horrific incident?
If there's no power, where would all that energy be coming from?
Someone did a funny prank and bypassed the Circuit Breaker he pulled in stages before! Happens all the time.
The switch gear is still being fed from somewhere else that is still energized. Same way if you turn of the master breaker in your home panel the lines coming from the street into the lugs of your panel are still energized.
John was working downstream from the disconnect where he had isolated the power but the junction where the spanner made contact was upstream where contacts were still energised. When you isolate something to work on it there can still be energised systems all around it that you must be aware of.
amazing
John has contributed to combating global warming though...
holy shit that's some creepy animation you got there, you sick fucks don't know where to draw a line don't you, but information is good, thanks for that, subscribed
So, for example, you are a qualified electrician, but if you do not pay attention to the electrical safety rules, laws, and regulations of your company or country, and you work on high-voltage switches, breakers and capacitors while intoxicated or not at complete concentration, you can end up severely burned, injured, or dead from an arc flash.
Lots of ways arc flash accidents can happen, but one way is using a magnetic large screwdriver on an energized load fuse you work on, and then you suddenly drop the screwdriver, and the metal part of that too hits the energized stuff on the ground, sets off air-gap sparking and causes a phase-to-ground strike of extremely large, explosive electric current/heat (the "arc flash" itself) in as fast as 1/8 of a second!!!
The injurious/fatal force of the flash can be equivalent to 1 (or a bit more) stick of dynamite blowing up in front of your chest or face!
Why no faces? =s
Their faces... they haunt me
Unfortunately John was to witness his daughter suffer horrific burns to the face, after her hair caught alight when blowing the candles out on her birthday cake ..
i love the technech of intuceing the charitor just to kill him
é MoiśT DéPhÌ-ķŃúť-É-ĻíÉ Shiré DEPHI-KNUTT-E-LIE
I was arc flashed upon. I'm a walking miracle. Trust me its a bitch.
So johns wife is available?
🤣🤣🤣🤣
I love the way they are wearing those stupid lanyards around their necks,very realistic 😁
Why'd they have to give this man a family before they killed him? lmao!
I can help you with your 500 words!😂 III-3
Why is John's personal life relevant?
Is Knótt
Probably John shouldn't have married.
Strategy known as pathos commonly used in advertisements. Basically creates an emotional response to make someone feel sympathy and perform and action (in this case, the usage of PPE)
@@andrewbanocy2592 I honestly wasn't expecting a real answer, but that's interesting
If this is a true story, whoever the contractor was who didn't replace the shroud should be held responsible, as well as if there was somebody who was supposed to check that everything was as it should be.
Awful way to die.
Too bad all that gear is expensive and decreases user awareness and dexterity. Bring on the robots.
Did John's kid have a clown at the party? They seem to be about that age.
The melted off faces gave it away
#trilliumcollege also uses UA-cam University 😅 12k well burnt