Yesterday I passed SFS6002 electrical safety course and got SFS 6002 käytännössä book. SFS 6002 electrical safety training is for all electrical work in Finland engaged in compulsory education, which must be renewed every five years. Now I know somewhat more than before on electrical safety related to electrical installations.
SFS6002 is a Finnish standard how electrical work should be performed safely. It is based on European general standard EN 50110-1 (Operation of electrical installations – Part 1: General requirements) plus Finnish national additions to it.
If you want to get your hands on the original European EN 50110-1 standard, you need to buy it. There are also free information on standard available: British edition of the standard BS EN 50110-1:2004 can be found on-line.
760 Comments
Tomi Engdahl says:
An estimated 90 percent of homes globally have unsafe electrical installations, and nearly 70 percent of building fires are caused by the overheating of electrical wires. Overloads, short circuits and faulty insulations cause billions in property damage or losses each year.
https://copperalliance.org/benefits-of-copper/electrical-safety/
Tomi Engdahl says:
BASIC ELECTRICAL 101 #02 ~ PLUGS AND RECEPTICALS
https://www.youtube.com/watch?v=YcnIsJurpSw
Sometimes it good to get back to basics.
Tomi Engdahl says:
käyttöönottomittaukset sähkölaitteistossa, mittausvideo
https://www.youtube.com/watch?v=6tglLloqeGI
Tomi Engdahl says:
Jännitteiset käyttöönottomittaukset
https://www.youtube.com/watch?v=UAyotdwwOeI
Jännitteisenä tehtävät käyttöönottomittaukset pienessä sähkökeskuksessa.
Tomi Engdahl says:
Jännitteettömät käyttöönottomittaukset
https://www.youtube.com/watch?v=Sm4hDTJXL98
Pienen sähkökeskuksen jännitteettömänä tehtävät käyttöönottomittaukset
Tomi Engdahl says:
Fluke 1653 Käyttöönottotarkastusten suorittaminen
https://www.youtube.com/watch?v=WLvCd9RuQaE
Videolla esimerkit kuinka suoritat käyttöönottotarkastukseen liittyvät mittaukset käyttäen Fluke 1653 mittalaitetta.
Kiinteistöjen sähköasennusten käyttöönottotarkastukset
https://www.youtube.com/watch?v=7EFN_mJZLws
Tomi Engdahl says:
Bayonet Cap to Edison Screw Lamp Adaptor Incorrect Polarity Massive Risk of Electric Shock
https://www.youtube.com/watch?v=HZ2EKCUp7-E
Bayonet cap to Edison screw lamp adaptor brought from an on-line auction site. This adaptor has a 50% chance of incorrect polarity and therefore a massive risk of electric shock to the person installing either the adaptor of lamp (bulb).
Tomi Engdahl says:
Outdoor Electrical Safety Chapter 3
https://www.youtube.com/watch?v=MJPfHv5QDvk
Electricity is a force we take for granted. Although we harness it for clean energy it can also do severe damage if misused.
Tomi Engdahl says:
Chapter 2: Anatomy of a Transmission System
https://www.youtube.com/watch?v=WTIQ_xcp0sU
From the AEP series Anatomy of an Electric System.
Tomi Engdahl says:
ELEC9716 Electrical Safety – Lecture 1
https://www.youtube.com/watch?v=NU4k8KUd2ho
Effects of electrical current through the body, electric shock, shock burns, time-current zones, impact of frequency & DC
Do Volts or Amps Kill You? Voltage, Current and Resistance
https://www.youtube.com/watch?v=9iKD7vuq-rY
There’s a saying that “it’s not the volts that kills you, it’s the amps” and while that’s true in a way, you can’t have amps without volts and skin resistance plays a big part too. This video explores all this, introducing voltage, current and resistance for those new to these things.
Tomi Engdahl says:
Electrical Measurement Safety by Fluke
https://www.youtube.com/watch?v=IzwN8yibjjA
Watch our video and stay safe in your work environment. Work smart, work safely.
————————-
When electrical problems occur we are called on to fix them fast however,
trying to work too quickly can lead to mistakes. Today’s power systems can deliver a deadly blow to anyone who fails to take the right safety precautions.
Tomi Engdahl says:
Personal Electrical Safety Equipment – Gloves
https://www.youtube.com/watch?v=9-oPV3rF_T0
Tomi Engdahl says:
Safety When Taking Electrical Measurements at Industrial Power Panels
https://www.youtube.com/watch?v=tpV9G9SCVls
Students of the Industrial Assessment Center at Tennessee Tech University demonstrate the safe method to take readings on an electrical panel at a manufacturing facility.
Electrical Measurement Categories – CAT I II III IV
https://www.youtube.com/watch?v=LTGs6GXB8io
Measurement categories for electrical measurement equipment such as multimeters.
CAT I equipment is not suitable for connection to the mains supply, CAT II and above is, but the distance from the energy source is important, with CAT IV being nearest to the energy source such as where power enters a building.
Tomi Engdahl says:
480 volt 3-phase Arc Flash Demonstration
https://www.youtube.com/watch?v=-iClXrd50Z8
Here arcs were intentionally initiated by bridging wires across three copper bus bars in a testing laboratory. Three phase 480 volt power was then applied across the bus bars for about 1 second. The wires immediately explode, forming a conductive plasma which forms high current power arcs between phases. The actual fault current in the demonstration is not known, but is likely in the range of tens of kiloamps.
3 words: Available Fault Current!!!
Tomi Engdahl says:
Electrical Safety Essentials – How to stay ahead of the curve
https://www.youtube.com/watch?v=9tWyH2kNmg0
As a health technology management professional, one of your principal duties is to assure the safety of the hundreds, (perhaps thousands) of devices in your inventory. However, the electrical safety test landscape iscontinually evolving, presenting new technology and challenges. Learn how to stay ahead of the curve in this webinar.
Tomi Engdahl says:
Different Types of Earthing Systems – Methods of Earthing
https://www.youtube.com/watch?v=PQurwBqaVjk
Different Types of Earthing Systems – Methods of Earthing
In an electrical installation or an electricity supply system an earthing system or grounding system connects specific parts of that installation with the Earth’s conductive surface for safety and functional purposes.
In other words, to connect the metallic parts of electric machinery and devices to the earth plate or earth electrode through a thick conductor wire for safety purpose is known as Earthing or grounding.
Tomi Engdahl says:
Electricity in Action: Be Smart, Be Safe
https://www.youtube.com/watch?v=zwJh9QvSgRw
The power of electricity is in full view in this video. See real-life scenarios of dangerous electrical interactions, and learn how to be smart and be safe around electricity.
Live Wire Demonstration
https://www.youtube.com/watch?v=2Xoyb9M5-EA
Dominion Safety Experts travel our service area conducting live wire demonstrations for fire departments and emergency responders to alert them to the dangers of working around power lines.
Tomi Engdahl says:
Electrical Safety Testing A Complete Overview Part 1 – Feb. 12th, 2014
https://www.youtube.com/watch?v=PNNnBtgoVf8
Electrical Safety Testing A Complete Overview Part 1 – This archived webinar discusses:
General Safety
Why Test?
Types of Testing
Methods for Testing Safety
Training Resources
Tomi Engdahl says:
Always Use The Correct Fuse Value…
https://www.youtube.com/watch?v=4e6n1TEAG5g
This is the result when manufactures cut corners, leading to potentially dangerous situations putting lives at risk.
Tomi Engdahl says:
1.5MM Flex Examination/ Destruction.
https://www.youtube.com/watch?v=fDPypbT7FBo
Measuring the resistance, on an old lawnmower flex. Measuring around 10M in length (1.5MM DIA). Then we conduct a test whereby, the coiled up wire is tested to its limit, using the Variac.
Well, at least the cable took over its rated amperage, unlike the quad socket device, that was disappointing to be fair.
Tomi Engdahl says:
Dangers of arc flash
https://www.youtube.com/watch?v=xDLKLnVdlWE
Arc flash: How to protect yourself
https://www.youtube.com/watch?v=Ar4UAb3Uwh8
Tomi Engdahl says:
How does PS Audio protect from equipment fires?
https://www.youtube.com/watch?v=2hFWYdN_66M
Sometimes the magic blue smoke inside equipment escapes and all hell breaks loose. What does PS Audio do to keep its products and customers safe?
Tomi Engdahl says:
Arc Flash – explained!
https://www.youtube.com/watch?v=NsqUyalrbc0
What is Arc Flash?
How to Prevent, Protect and Assess Risk.
Tomi Engdahl says:
Eaton Arc Flash Safety
https://www.youtube.com/watch?v=fZU06zNeICw
TRAINING: Arc Flash Safety for Electrical Panels with Gene Reed
https://www.youtube.com/watch?v=6TtX2LA_WTU
CED Solution Consultant Network MCC Specialist Gene Reed discusses arc flash safety for electrical panels, including warning labels, approach boundaries, PPE categories, and more.
Tomi Engdahl says:
Why Charging Phones Take Victims
https://www.youtube.com/watch?v=SHGo-52wCDc
Is it REALLY unsafe to use a charging mobile phone in bathtub or elsewhere?
Tomi Engdahl says:
4 Reasons Your Circuit Breaker Panel is Buzzing
https://energytoday.biz/blog/4-reasons-your-circuit-breaker-panel-is-buzzing
Electricity is like a trained circus animal.
When it’s controlled and behaving as expected, everything goes smoothly. But when something goes wrong and its power is unleashed, it’s incredibly dangerous.
So if you hear your electrical panel buzzing and you immediately panic, we don’t blame you.
Tomi Engdahl says:
https://tukes.fi/documents/10197/8647605/Sahkolaitteistoista_aiheutuneet_tulipalot_ja_palovaarat_2014.pdf
Tomi Engdahl says:
Kolmen lapsen kuolemaan johtanut tulipalo Levillä syttyi lattialämmityksestä – asennuksessa tehty karuja virheitä
https://www.helsinginuutiset.fi/artikkeli/769032-kolmen-lapsen-kuolemaan-johtanut-tulipalo-levilla-syttyi-lattialammityksesta
Tomi Engdahl says:
Are gloves required when installing lamps ?
https://www.youtube.com/watch?v=Oi7Yh0rtdmg
Touching the surface of a lamp with bare fingers will leave oil or grease on the surface – but will this cause problems and should gloves be worn when installing lamps?
For halogen capsule lamps which operate at very high temperatures, the grease can cause failure of the glass. For everything else, it makes no difference.
Tomi Engdahl says:
Tavallinen pistorasia ei kestä jatkuvaa sähköauton lataamista
http://etn.fi/index.php?option=com_content&view=article&id=9484&via=n&datum=2019-05-17_15:31:22&mottagare=31202
Turvallisuus ja elinkeinovirasto TUKES on ilmaissut huolensa sähköautojen ja ladattavien hybridiautojen lataamiseen liittyvistä riskeistä
TUKES:n mukaan tavallisia maadoitettuja suko-pistorasioita (16 A) ei ole suunniteltu kestämään läpi yön tapahtuvaa sähköauton latausta. Varsinkin huonokuntoiset pistorasiat voivat kuumentua vaarallisesti sähköautoa ladattaessa.
- Hyvä nyrkkisääntö on, että autoa ei tulisi ladata samanlaisesta pistorasiasta kuin mistä lataa kännykkää ja kannettavaa tietokonetta. Asianmukaisissa autonlatauslaitteissa on niin sanottu tyypin 2 latauspistoke, joka on tätä tarkoitusta varten suunniteltu ja yleiseurooppalaisen standardin mukainen. Tyypin 2 pistoke näyttää hieman erilaiselta kuin tavallinen kodin pistorasia
Tukes suosittelee kotiin asennettavaksi omia latausasemia
Tavallisesta kotitalouspistorasiasta lataaminen ei täytä turvallisuusvaatimuksia jatkuvassa käytössä, joten omakotitalossa asuvien kannattaa hankkia kotilatauslaite
Sähköauto kuuluu ladata tyypin 2 pistorasiasta tai pistokkeesta, riippuen latauslaitteen mallista
Tomi Engdahl says:
https://plugit.fi/fi-fi/article/etusivu/latauspistoketyypit-sahkoautoille/135/
Tomi Engdahl says:
Safety Considerations for Smart Grid Technology Equipment
https://incompliancemag.com/article/safety-considerations-for-smart-grid-technology-equipment/
One of the biggest frontiers in electrical engineering in this early part of the 21st century is the development and implementation of smart grid technology.
This article provides a brief overview of smart-grid technology, and then explores the safety considerations that should be addressed in the design of smart grid technology equipment, particularly in low-voltage AC power applications operating below 1000 V AC.
Hazard-Base Safety Engineering Standard IEC 62368-1
IEC 62368-1 is the new hazard-based safety engineering standard covering audio/video, information and communication technology equipment.
If we agree to take a modular approach to evaluating the safety of the smart-grid technology equipment, then IEC 62368-1 will be well-suited for providing the plug-in modules for evaluating the safety of the information technology and communication circuitry portion of the smart grid equipment.
IEC 60950-1 Continued Use
For the near term, we would expect to use IEC 60950-1 to evaluate smart grid equipment with communication and information technology circuitry for safety, as well as the required protection and separation from other circuits that they require.[4] This would be until IEC 62368-1 becomes adopted by national standards committees.
As both IEC 60950-1 and IEC 62368-1 standards reference IEC 60950-22 as a supplemental standard for equipment installed outdoors.
Tomi Engdahl says:
Avoiding electrocution (Featuring real shocks.)
https://www.youtube.com/watch?v=wR6g38Pxwog
The majority of electric shocks are painful and surprising, but not fatal. It takes a good electrical contact between two parts of your body between a live source and a return path to allow high current to flow through your body. By understanding electricity and how it flows in differing quantities through many paths of resistance you can avoid putting yourself at risk of a fatal shock.
The safety industry implies that all electrical equipment should be locked out and tagged out before working on it, but in reality that is not always possible, although definitely a better option in the case of easily identified faults.
Much of the current wall of “one size fits all” safety legislation has come about due to the rise of all-trade building and facilities maintenance companies and their use of unskilled labour for economy.
Electrocution is normally a result of high current flow through your body. The most common mode of death is fibrillation of the heart. Your heart is actually composed of a large group of muscles that all contract in sync to deliver blood around your body. If they are knocked out of sync by the flow of current causing involuntary contraction of a portion of the heart, then they may not be able to re-sync and the heart will then function incorrectly and fail to deliver blood around the body, resulting in the potential for death.
The best way to defibrillate the heart is to use an AED Automatic External Defibrillator.
Tomi Engdahl says:
http://www.etn.fi/index.php/13-news/9509-isannan-hengenvaarallinen-temppu-oli-tappaa-sahkoasentajan
Tomi Engdahl says:
How Safe Is the SHOWER HEAD OF DOOM?!
https://www.youtube.com/watch?v=06w3-l1AzFk
If having live wire in shower isn’t bad enough, these water heaters make you do it! How bad is it?
Comments:
Here in Brazil this kind of shower is very common.
Nice video!
Mehdi: “So if this is installed absolutely correctly by a professional…”
We, brazilians: “Lemme look on youtube how to fix my shower without powering my house down…”
Wife: “Honey, what are you doing to the stove?”
Him: “Oh, nothing. I’m just cleaning it!”
Tomi Engdahl says:
Extension Cord Safety Virtual Demonstration
https://www.youtube.com/watch?v=VmWlka-SG1o
Extension cords offer a convenient solution for delivering power right where it’s needed. But proper selection and use of extension cords is critical to avoiding injuries. An estimated 3,300 residential fires originate in extension cords each year, killing and injuring more than 300 people. In addition, nearly 4,000 people are treated in hospital emergency rooms each year for non-fire related extension cord injuries, including fractures, lacerations, and electrical burns.
Tomi Engdahl says:
Electrical Safety – Temporary Power System – Shipyard
https://www.youtube.com/watch?v=ZtYsFndyBg8
Check out this wonderful electrical apparatus. It’s a wonder nobody has been killed by this. Well, I hope nobody has been killed by this!
Tomi Engdahl says:
ESFI Consumer Electrical Safety During Disasters
https://www.youtube.com/watch?v=5urzFweFYNE
Electricity drives the modern world and we often take it for granted. And if a natural disaster occurs, there’s a few things to remember to stay electrically safe during the storm.
Tomi Engdahl says:
Medical safety standards in power supplies
https://www.edn.com/electronics-products/electronic-product-reviews/other/4461959/Medical-safety-standards-in-power-supplies
Medical power supplies can be dangerous to patients and users if not properly designed and rated by a valid safety organization.
One such standard that applies to medical electronic equipment is ANSI/AAMI ES60601-1:2005, Part 1.
The new parts, PMM15, PMM20, and PMM30, are certified to the 3rd Edition of the IEC/EN/ANSI/AAMI ES 60601-1 medical safety standard (some call this the “bible” of medical electrical equipment standards).
With a clearance and creepage distance of 8mm, a typical leakage current of 2μA and a 5,000VAC isolation voltage.
Medical equipment must be designed to guarantee the highest level of safety up to 5,000 meters.
3rd Edition of the IEC/EN/ANSI/AAMI ES 60601-1 medical safety standard
http://www.aami.org/productspublications/ProductDetail.aspx?ItemNumber=1578
Tomi Engdahl says:
Why Don’t Birds and Squirrels Get Electrocuted on Power Lines?
https://www.electricaltechnology.org/2019/05/birds-squirrels-electrocuted-on-power-lines.html
Tomi Engdahl says:
5 asiaa, jota sinun tulee tietää rakennustuoteasetuksesta
https://cpr.europacable.eu/fi/cpr/cpr-basics-5-things-you-should-know
Tomi Engdahl says:
https://en.wikipedia.org/wiki/Electrical_wiring_in_North_America
Tomi Engdahl says:
Shock hazard: filtering on input power lines
https://www.edn.com/electronics-blogs/living-analog/4462160/Shock-hazard-filtering-on-input-power-lines
Compliance with electromagnetic interference (EMI) requirements usually involves the use of filtering on input power lines.
There is one, sometimes overlooked, issue with using filters such as this, which is that someone will neglect to make the illustrated connection to ground. In that case, the two capacitances shown here as C2 and C3 become a capacitance voltage divider, which for an input line of 120 volts AC, can put the case of the product at half the line voltage. Clearly, this can be very dangerous.
building’s wiring did not provide for ground at any of the electrical outlets.
Grandfathering – John Dunn, Consultant, Ambertec, P.E., P.C.
https://licn.typepad.com/my_weblog/2012/12/grandfathering-john-dunn-consultant-ambertec-pe-pc.html
Tomi Engdahl says:
https://hackaday.com/2019/06/05/protect-yourself-and-your-project-while-working-with-mains-power/
Tomi Engdahl says:
Proximity to overhead power lines and childhood leukaemia: an international pooled analysis
https://www.nature.com/articles/s41416-018-0097-7
Tomi Engdahl says:
PG&E transmission tower broke near origin of Kincade Fire
https://www.sfchronicle.com/california-wildfires/article/PG-E-says-high-voltage-lines-were-still-on-when-14560113.php
Tomi Engdahl says:
California Fires Updates: Up to 2.7 Million Will Lose Power
https://www.nytimes.com/2019/10/26/us/Kincade-Fire-Sonoma-California.html
The intentional shut-off, the largest in the state’s history, comes as extreme weather conditions heighten the the threats of wildfires.
sparks from its equipment could ignite wildfires throughout the utility’s service area.
The blackout could affect as many as 2.7 million people, and would be the largest power shut-off to prevent wildfires in California history.
PG&E added 90,000 customers to the intentional power shut-off as forecasts indicated that widespread dry, hot and windy weather is expected to begin moving through the region
On Saturday evening, Andy Vesey, PG&E’s chief executive for utility operations, insisted that cutting power was a last resort, and he defended the company’s “high-integrity equipment.” But he pointed out that high winds toss tree limbs: “When debris hits these wires, any spark can be an ignition source.”
Senator Jerry Hill, a Bay Area Democrat recently appointed to a panel to review PG&E’s handling of the power shut-offs, said the time has come for the courts to take control of the company before more damage is done.
“PG&E is a failure at every level,”
frustration with PG&E’s decision to blackout hundreds of thousands of customers, rather than the more surgical approach taken by other utilities.
utility continues to fail in communication, with some utility customers receiving only a four-hour warning of the current blackouts, instead of the required 24- to 48-hour notice.
PG&E filed for bankruptcy in January after amassing tens of billions of dollars in liability related to two dozen wildfires in recent years. As speculation grew that its equipment might be the cause of the Kincade Fire, its stock price plummeted about 30 percent on Friday to $5.08, a small fraction of its 52-week high of $49.42.
A transmission tower may have caused the Kincade Fire.
The Kincade Fire in Sonoma County broke out after Pacific Gas and Electric began its pre-emptive power shut-offs in the area on Wednesday. PG&E later said one of its transmission towers was a possible cause of the fire.
But wasn’t preventing a fire the point of the blackout?
As it happens, when electricity was cut off to homes and businesses, it was still flowing through the long-distance lines that make up the power grid.
based on the utility’s analysis, the wind forecast did not warrant cutting power to the transmission lines in the area of the Kincade Fire, even though the distribution system had been shut down.
San Diego Gas & Electric, which pioneered the strategy of cutting power as a wildfire safety measure, said it also typically cut power only to the distribution lines, unless extreme weather warrants stopping electricity flow through transmission lines.
The utility said its equipment was probably responsible for last year’s Camp Fire, which killed scores of people and destroyed the town of Paradise.
A broken, 100-year-old transmission tower that was 25 years past its “useful life” by PG&E’s own standards
The transmission tower under scrutiny in the Kincade Fire was 43 years old
Tomi Engdahl says:
PG&E Says Faulty Power Lines May Have Sparked 2 California Wildfires
https://www.forbes.com/sites/rachelsandler/2019/10/28/pge-says-faulty-power-lines-may-have-sparked-2-california-wildfires/?utm_source=FACEBOOK&utm_medium=social&utm_term=Gordie/#676f7264696
In two incident reports released Monday, PG&E said that a broken wire and a downed pole on a transformer may have caused two wildfires in Lafayette, California on Sunday.
The new reports come after the company said last week that its equipment malfunctioned moments before the Kincade fire began, although the exact cause of that fire is still under investigation.
Key background: Over the last three years, California has been devastated by wildfires that have razed entire towns, scorched people’s homes and killed hundreds. A deadly combination of malfunctioning electrical equipment and climate change have made the issue worse, and rising costs in California cities are pushing even more people out into fire-prone areas.
News peg: PG&E is currently in Chapter 11 bankruptcy proceedings after the utility was found responsible for causing the deadliest wildfire in California history last year, killing 85 people. In a move to prevent even more fires from sparking in the Northern California, PG&E has been cutting off power to millions of people, causing chaos
Tomi Engdahl says:
Video Shows The Moment The Getty Fire Sparked In Los Angeles
https://www.forbes.com/sites/rachelsandler/2019/10/30/video-shows-the-moment-the-getty-fire-sparked-in-los-angeles/?utm_source=FACEBOOK&utm_medium=social&utm_term=Gordie/#676f7264696
Topline: Authorities have determined the cause of the Getty Fire in Los Angeles: a tree branch falling onto a power line, which officially makes the cause of the fire accidental.
Tomi Engdahl says:
https://www.caruna.fi/ajankohtaista/sahkoverkko-rakennettu-sinun-turvallisuuttasi-ajatellen?utm_source=facebook&utm_medium=paid_social&utm_campaign=dpt&utm_content=turvallisuus