AFI - Arc-Fault Circuit Breakers (protection against overloads, short circuits, and parallel arcing)
Breakers with AFI suffix provide standard thermal/magnetic protection, PLUS protection against heat damage caused by parallel arcing in the circuit. A parallel arc occurs when electricity jumps the gap between wires of different voltages. An example of what may cause a parallel arc is a nail protruding through drywall, through the wiring, exposing the bare Hot and Neutral wires. If the wires are close enough together, arcing can occur between the wires. Breakers designed to protect against parallel arcs are called Arc-Fault Circuit Breakers, have a suffix AFI, and have a green test button (early versions had a blue button). An example catalog number is QO120AFI. 

CAFI - Combination Arc-Fault Circuit Breakers (protection against over loads, short circuit, parallel arcing, and series arcing)
Breakers with CAFI suffix provide standard thermal/magnetic protection, PLUS protection against heat damage caused by parallel AND SERIES arcing in the circuit. A series arc occurs when electricity jumps the gap between the strands within the same wire. An example of what may cause a series arc is when an extension cord is damaged because it has been smashed between furniture and the wall, cracking the insulation and exposing strands within one wire. Arcing may occur strand to strand. Breakers designed to protect against parallel and series arcs are called Combination Arc-Fault Circuit Breakers, have a CAFI suffix, and have a white test button. An example catalog number is QO120CAFI.

Which should you use in your home: AFI breakers or CAFI breakers?
This is actually not something you decide on your own. What you use is dictated by your local electric code. Requirements may vary city to city. If you are unsure, check with your local Electrical Inspectors office.

• electrical exam; journeyman electrician; electrical,construction and maintenance, industrial, Construction electrical, contractors Electrical, Solutions Electricity, energy efficiency, Energy Savings, Energy use, Green energy, IBEW, NECA ,power lines
• apprentice,Online Electrician course, electrician classes, skilled trades, construction and maintenance, industrial,309A, 442A, electrical exam, electrical licence, electrical license, electrician exam, electrician licence, industrial exam, red seal
• electrical test; electrical employment,electrical license; electrical certificate; electrician exam; electrical exam; electrical code book; electrical classes;electrical license exam,Humber college, sheridan college, durham college, college of trades
• Csa, Ontario college of trades, practice test electrical practice tests electrician practice test electrical practice test industrial electrician test
• electrician exam, george brown college, electrical exam prep, 309a exam questions, electrician courses, industrial electrical exam, ontario trades, electrical jobs, canadian electrical code, electrician apprenticeship, industrial exam

Here is the feedback on the 309A Construction & Maintenance classes- Nov. 24th,2018
"Before I came to class, it was very difficult for me to find the proper study material with great reviews and that would do the job and the approach to proper preparation. This class solved my problems. The method of my instructor was excellent. I find the CEC very complicated but this class made me like study it. The happiest time about coming to class is the instructor. This class exceeded my expectations. I liked how patient the instructor was."
"I had trouble with motors. I was recommended by a friend at work. I find the course with all its potential for success very reasonably priced. I was happiest when we went through motors/generators material. Now I understand. What exceeded my expectations is the instructors knowledge of the code and the in class notes- very effective."
"I wanted to be more familiar with the code. I searched online and I liked the quick response and 24/7 support. I would recommend this course, yes of course. It comes with a 95% success. Now I am more familiar with using the code book properly and what is expected of me as a general trade knowledge for the exam and work. What exceeded my expectations is the amount of extra help if needed and the amount of questions. I liked everything about the course- it was done right and there was nothing that I did not like."
"Before I came to class, my knowledge was broad and not laser focused and I was not motivated. This course helped me with what is important and motivated me. I liked the references/openness to support. I liked the interactive sessions and the road map to study for the exam. What exceeded my expectations is the step by step guidance"
"The fact that this course is trusted by the IBEW has motivated me. I like the in class sessions and how they helped me improve my general trade knowledge. I would not change anything about this course. It is perfect."
"Before I came to class, I felt like I am missing a lot of important information for the exam. I wanted to learn how to dissect the code book. I searched online and I liked the success rate. I am glad that I came to class and I was impressed with the knowledge that I have gained. I was surprised of how well this course prepared me for the Cfq. I liked the instructor and his simplistic approach to teaching."
"Before I came to class, I had issues with diagrams. I was recommended by friends who took this course before.I was happiest when I learned about the small details of some rules. Now I can answer questions quicker, can answer general trade knowledge questions from memory and quickly find information in the code book- what a difference. I would improve this course by teaching it in trade school. It is excellent."
"Before I came to class, trade school was a year ago and I did not understand trade school very well. Sam is the man. He was my STC teacher and he is teaching this course with a 95% success rate and I was not surprised. He is wired for teaching. This class makes you want to learn more. I was able to understand questions and code more. I liked everything about the course and there is no way to improve it."
"Before I came to class, preparation was difficult and I needed a refresher. I was trying to learn the basics. This course has great reviews. I like to go to a course that works and teaches me how to prepare and pass right- the first time. I was able to get back to the books and gain the know how to pass. What exceeded my expectations is the great outline for success. The course was right to the point, I am glad that I came to class and I would not change a thing."
"Before I came to class, I was trying to avoid writing the exam more than once. I was trying to find a proper pre-exam course that does the job. The 11th week course at trade school was a waste of time for me. I liked the black Friday sale. The course is very informative and there are new tricks and short cuts to learn. I managed to build my confidence to write the electrical exam. The excellent teaching methods helped me and the way the code was interpreted."
"Before I came to class, I wanted to cover the topics/areas that I have not been exposed to in the field. Now I overcame that and can navigate the code book easier & more confidently."
"Before I came to class, I was trying to increase my knowledge and confidence to write the electrician exam. The course was excellent and I am fully satisfied overall. I was trying to avoid online scams and people online getting your money and teaching you nothing. I would recommend this course to my friends. I liked the 48 duration of the course. I liked the explanation on every style and format of possible questions that we could face on the exam. There are 5 versions of the exam and this course prepares well for that. I was able to build confidence to face the real exam. Class notes were very knowledgeable and informative. I liked the online material, diagrams, key knowledge and important points."
"I liked coming to class for the individual attention. Knowing when and how to derate and when not to derate and service factors was a big plus for me. What has exceeded my expectations is the quality of the online questions/answers. The instructor took time to teach us the course.'
"Before I came to class I was nervous and lacked the knowledge to write and pass the electrician exam.I wanted to learn how to use the code book. My friends recommended this course. All of them were vouching for Sam with a 95% success rate. I was sold on the fact that Sam Mallak was teaching the class. I liked the frequent breaks, GTK knowledge and lots of material to study. This is a serious course. I managed to increase my knowledge exponentially both general and code related. What exceeded my expectations is the way the material was explained and the amount of knowledge that is exam related. All the people in the class were super nice."
"Before coming to class, I need to know how to do conduit fill, trying to look for keywords and needed help navigating the code book. I searched online and liked the 95% success rate. I had no problem joining the course- it was very easy. I like the fact that I will be learning everything about the code plus everything that code can not teach since not everything is in the code book. I have increased my willingness to learn, the ability to find things faster, the amount of knowledge learned and how much I am expected to know as a journeyman. I liked everything about this course and would not change a thing."
"Before I came to class, I was lacking general trade knowledge not taught in trade school. I wanted to better navigate the code book so I searched online and liked the success rate of past students passing the c of q. I like the fact that I can come to class and ask questions and get feedback. I was happiest learning new material. I was able to improve on being able to understand what the question is asking for and what they were thinking when they asked me a certain question- assumptions. what exceeded my expectations is the amount of information that are given and made available. I liked the easy going atmosphere. I would not change anything about the course. Course is excellent as is."
"Before I came to class, I thought that I will fail the first time, but now I am confident that I will pass the first time and get my $650 from the JAC. I was referred to this course by google and friends. This course stands out from the rest by its teaching methods of trying to find the answers and finding them as simple as possible. I would recommend this course to every person that I come across. The fact that someone will guide me and help me 24/7 forces me to study. I was happy to study and get prepared for the exam. I can now find information memorized and from the code book the fastest way and simplest way. What exceeded my expectations is that I have to use my code book more often at the job site. I liked the fact that the teacher is very knowledgeable and helpful.
"Before the class, I was totally lost as to what to study for the C of Q. I was trying know what to study and how to save time on the exam. The JAC recommended this course and my friends at work. I was always better off learning in class and the JAC highly recommended this course. I liked the guarantee to pass and the 95% success rate. Everything exceeded my expectations. This class helped the most, very organized, great support in and outside the class, very straight forward, pin point exactly what to study and faster ways to solve problems. I had to give up my weekends- no complain :).
"Before I came to class, I was trying to understand fire alarm, motors and transformers. I did not search for this class- friends told me about it. References from people made my mind up. There was no obstacle that prevented me from coming to class. I have friends in the same class. The teacher made me the happiest about coming to class. Since I came to class, I have increased my knowledge tremendously and the understanding of the code rules. I liked everything about this course and would not change a thing."
"Before I came to class, it was bad. I am trying to pass the cfq. I seached on google and liked the logo. I would recommend this course- matter of fact, I recommend it to my boss. I liked coming to class because of the teacher. This course is good the way it is- keep it up."
"Before coming to class, I was confused. I was trying to eliminate my confusion about this electrical exam. I was very happy with receiving the knowledge that I was seeking. I was able to understand where and how to find answers to questions. What exceeded my expectations is the training provided- very simple and easy to digest."
"Before coming to class, I did not know what to expect- felt slightly overwhelmed. I was trying to build my confidence as my deadline to write the C of Q approaches and as well being proficient in the use of the code book. I was referred to from trade school. I liked the positive reviews- two acquaintances who took the course prior to writing and passed on first attempt. The course was very thorough and well presented. I liked the convenient location, free parking and positive reviews. The comfortable environment, easy to follow along and participate were the best times. I was able to have a greater sense of motivation to study and prepare myself to write the exam. I have increased my confidence in using the code book. The course is situated well. Sam is a great and knowledgeable instructor."
"Before coming to class, I was 100% lost as to what to study and which practice exam to use. I was trying to solve the problem of what to expect and how to properly do calculations for a variety of topics. This course has helped others from my company pass their c of q. I was sold on the course after I read how in depth is the online notes were. Now I feel less intimidated about the type of questions they ask and the strategy you develop to clearly see what they are asking for and how to effectively find the answers. I was able to build a solid strategy for studying and writing my test. What has exceeded my expectations is how much practice we get answering questions together. I liked about the course of how simple it is using the index of the code book can be, how much time we spent reviewing vital lessons from trade school and of course the GTK section."

• electrical exam; journeyman electrician; electrical,construction and maintenance, industrial, Construction electrical, contractors Electrical, Solutions Electricity, energy efficiency, Energy Savings, Energy use, Green energy, IBEW, NECA ,power lines
• apprentice,Online Electrician course, electrician classes, skilled trades, construction and maintenance, industrial,309A, 442A, electrical exam, electrical licence, electrical license, electrician exam, electrician licence, industrial exam, red seal
• electrical test; electrical employment,electrical license; electrical certificate; electrician exam; electrical exam; electrical code book; electrical classes;electrical license exam,Humber college, sheridan college, durham college, college of trades
• Csa, Ontario college of trades, practice test electrical practice tests electrician practice test electrical practice test industrial electrician test
• electrician exam, george brown college, electrical exam prep, 309a exam questions, electrician courses, industrial electrical exam, ontario trades, electrical jobs, canadian electrical code, electrician apprenticeship, industrial exam

10 more students have passed the electrical exam. 8 have passed the Construction & Maintenance electrician licence exam and 2 more have passed the 442A electrical industrial licence exam. Congrats to all.

Lion Electric, GAK Technology Inc., Sentry Electrical, Fitzpatrick Electrical Ltd., Artex Electrical 1984 Ltd., Schneider Electric and Tembec are just some of the companies that we have added/relisted to our list of companies that we helped succeed. Congrats.

Here is what Mr. Marc M. had to say:"Yes I wrote the construction electrician

licence exam and I passed it the first time. The course was extremely helpful and I do

recommend it to everyone I know that is looking at writing the exam. I passed

with 89%."

Excellent effort and well deserved. We are really happy for you. Enjoy your licences & the extra. Thank you for your trust & please tell more of your friends.

10 more students have passed the electrical exam. 9 have passed the Construction & Maintenance electrician licence exam and 1 more have passed the 442A electrical industrial licence exam. Congrats to all.

Ozz, BFG Enterprise, Hotwire Electric, U.S. Steel Canada LEW, Fame Electric, Mitchell Plastic, Caribbean Producers Jamaica Ltd, Starlight Trade and Ohmax Electric Inc are just some of the companies that we have added/relisted to our list of companies that we helped succeed. Congrats.

Excellent effort and well deserved. We are really happy for you. Enjoy your licences & the extra. Thank you for your trust & please tell more of your friends.

Using Portable Generators Safely

Portable generators are internal combustion engines used to generate electricity. They are useful when temporary or remote power is needed, and are commonly used during cleanup and recovery efforts following disasters such as hurricanes, tornadoes, etc. This fact sheet discusses specific hazards inherent with the use of generators and also provides helpful information to ensure that workers and others using such equipment remain safe.

Hazards Associated with Generators:

Shocks and electrocution from improper use of power or accidentally energizing other electrical systems. • Carbon monoxide from a generator’s exhaust. • Fires from improperly refueling a generator or inappropriately storing the fuel for a generator. • Noise and vibration hazards.

Shock and Electrocution

The electricity created by generators has the same hazards as normal utility-supplied electricity. It also has some additional hazards because generator users often bypass the safety devices (such as circuit breakers) that are built into electrical systems. The following precautions are provided to reduce shock and electrocution hazards: • Never attach a generator directly to the electrical system of a structure (home, office, trailer, etc.) unless a qualified electrician has properly installed the generator with a transfer switch. Attaching a generator directly to a building electrical system without a properly installed transfer switch can energize wiring systems for great distances. This creates a risk of electrocution for utility workers and others in the area. • Always plug electrical appliances directly into the generator using the manufacturer’s supplied cords or extension cords that are grounded (3-pronged). Inspect the cords to make sure they are fully intact and not damaged, cut or abraded. Never usefrayed or damaged extension cords. Ensure the cords are appropriately rated in watts or amps for the intended use. Do not use underrated cords—replace them with appropriately rated cords that use heavier gauge wires. Do not overload a generator; this can lead to overheating which can create a fire hazard. • Use ground fault circuit interrupters (GFCIs), especially where electrical equipment is used in or around wet or damp locations. GFCIs shut off power when an electrical current is detected outside normal paths. GFCIs and extension cords with built-in GFCI protection can be purchased at hardware stores, do-it-yourself centers, and other locations that sell electrical equipment. Regardless of GFCI use, electrical equipment used in wet and damp locations must be listed and approved for those conditions. • Make sure a generator is properly grounded and the grounding connections are tight. Consult the manufacturer's instructions for proper grounding methods. • Keep a generator dry; do not use it in the rain or wet conditions. If needed, protect a generator with a canopy. Never manipulate a generator’s electrical components if you are wet or standing in water. • Do not use electrical equipment that has been submerged in water. Equipment must be thoroughly dried out and properly evaluated before using. Power off and do not use any electrical equipment that has strange odors or begins smoking.

Carbon Monoxide Poisoning

Carbon monoxide (CO) is a colorless, odorless, toxic gas. Many people have died from CO poisoning because their generator was not adequately ventilated. • Never use a generator indoors or in enclosed spaces such as garages, crawl spaces, and basements. NOTE: Open windows and doors may NOT prevent CO from building up when a generator is located in an enclosed space. • Make sure a generator has 3 to 4 feet of clear space on all sides and above it to ensure adequate ventilation. • Do not use a generator outdoors if its placement near doors, windows, and vents could allow CO to enter and build up in occupied spaces. • If you or others show symptoms of CO poisoning—dizziness, headaches, nausea, tiredness—get to fresh air immediately and seek medical attention. Do not re-enter the area until it is determined to be safe by trained and properly equipped personnel.

Fire Hazards 

Generators become hot while running and remain hot for long periods after they are stopped. Generator fuels (gasoline,kerosene, etc.) can ignite when spilled on hot engine parts. • Before refueling, shut down the generator and allow it to cool. • Gasoline and other generator fuels should be stored and transported in approved containers that are properly designed and marked for their contents, and vented. • Keep fuel containers away from flame producing and heat generating devices (such as the generator itself, water heaters, cigarettes, lighters, and matches). Do not smoke around fuel containers. Escaping vapors or vapors from spilled materials can travel long distances to ignition sources. • Do not store generator fuels in your home. Store fuels away from living areas.

Noise and Vibration Hazards

Generator engines vibrate and create noise. Excessive noise and vibration could cause hearing loss and fatigue that may affect job performance. • Keep portable generators as far away as possible from work areas and gathering spaces. • Wear hearing protection if this is not possible.

• electrical exam; journeyman electrician; electrical,construction and maintenance, industrial, Construction electrical, contractors Electrical, Solutions Electricity, energy efficiency, Energy Savings, Energy use, Green energy, IBEW, NECA ,power lines
• apprentice,Online Electrician course, electrician classes, skilled trades, construction and maintenance, industrial,309A, 442A, electrical exam, electrical licence, electrical license, electrician exam, electrician licence, industrial exam, red seal
• electrical test; electrical employment,electrical license; electrical certificate; electrician exam; electrical exam; electrical code book; electrical classes;electrical license exam,Humber college, sheridan college, durham college, college of trades
• Csa, Ontario college of trades, practice test electrical practice tests electrician practice test electrical practice test industrial electrician test
• electrician exam, george brown college, electrical exam prep, 309a exam questions, electrician courses, industrial electrical exam, ontario trades, electrical jobs, canadian electrical code, electrician apprenticeship, industrial exam

10 more students have passed the electrical exam. 8 have passed the Construction & Maintenance electrician licence exam and 2 more have passed the 442A electrical industrial licence exam. Congrats to all.

Callisto Construction Ltd., Guild, All Tech Contracting, Reid Electric, Grand River Enterprises, Deman Construction, KO Electric, OPG and Plan are just some of the companies that we have added/relisted to our list of companies that we helped succeed. Congrats.

Here is what Mr. Michael F. had to say:"I passed my 442A electrician industrial electrical licence exam. 82%. Thank you."

Excellent effort and well deserved. We are really happy for you. Enjoy your licences & the extra. Thank you for your trust & please tell more of your friends.

10 more students have passed the electrical exam. 6 have passed the Construction & Maintenance electrician licence exam and 4 more have passed the 442A electrical industrial licence exam. Congrats to all.

Ozz, MWS Solutions, IBEW135, Metro Wide Electrical, Prodomax, Accel Electric and Pepsi are just some of the companies that we have added/relisted to our list of companies that we helped succeed. Congrats.

Here is what Mr. Lain C. had to say:"Hi Sam. Yes I wrote and passed the 442A exam. 94%."

Here is what Mr. Graham S. had to say:"I passed my exam. I scored a 70% on the dot. Communication systems was an area I did not score well on. But all is good. I am an electrician now and that is all that matters.

Excellent effort and well deserved. We are really happy for you. Enjoy your licences & the extra. Thank you for your trust & please tell more of your friends.

10 more students have passed the electrical exam. 10 have passed the Construction & Maintenance electrician licence exam. Congrats to all.

Black & Mac, Omega Electrical, and Panson are just some of the companies that we have added/relisted to our list of companies that we helped succeed. Congrats.

Here is what Mr. Dave G. had to say:"I got 79. Thanks."

Excellent effort and well deserved. We are really happy for you. Enjoy your licences & the extra. Thank you for your trust & please tell more of your friends.

10 more students have passed the electrical exam. 10 have passed the Construction & Maintenance electrician licence exam. Congrats to all.

Canada Power Products, Electrical Services, Rainbow Electric, Plan, Guild, Olkamar and Fitzpatrick are just some of the companies that we have added/relisted to our list of companies that we helped succeed. Congrats.

Here is what Mr. Mark M. had to say:"Yes. I passed. Thanks for the follow up..aced it..thanks so much..It was hardwork after been out of school for 12 years. 98%."

Here is what Mr. Guillaume R. had to say:"I passed. Thank you, my score was 83%"

Here is what Mr. Alex A. had to say:"yes I have I literally wrote it the day after our last class session! I passed with a 72(unfortunately) but a pass is a pass! The only times I was studying was during our class sessions which really helped me alot! I did not do the csa app either. Your class was absolutely amazing and I will reccomend it to every one that is looking for extra help for when it comes to the test! Thank you very much and may you have yourself a merry Christmas and a happy new year!"

Here is what Mr. Connor I. had to say:"Yup wrote last week and passed. Passed with a 79, will be recommending your class to friends for sure."

Here is what Mr. Bryan K. had to say:"Yes I have and I passed thank you for your help with the course it was really helpful. I have told my friends 2 are gonna sign up soon."

Here is what Mr. Linord L. had to say:"Yes I passed. my apprentice is really getting the best experience! Haha Merry Christmas! Thanks for the help."

Excellent effort and well deserved. We are really happy for you. Enjoy your licences & the extra. Thank you for your trust & please tell more of your friends.

10 more students have passed the electrical exam. 10 have passed the Construction & Maintenance electrician licence exam. Congrats to all.

Black & Mac., Metro West Electrical, Marlen and Stackpole are just some of the companies that we have added/relisted to our list of companies that we helped succeed. Congrats.

Here is what Mr. Robert M. had to say:"just got my results that I passed today. I would not have been able to do it without your questions. Thanks so much and I'll recommend your course to anyone who's writing!"

Here is what Mr. Matthew M. had to say:"I just got results back passed. Glad that I found your class it really was the difference in my successful exam result thank you."

Here is what Mr. Jai D. had to say:"I sat my exam in September and passed.

Thanks for your website for helping me. I live in Australia and

flew over for the Red Seal exam and passed on my first attempt with 77%.

Thanks again."

Here is what Mr. Daniel M. had to say:"Yes I wrote the IP. Using the tools you provided really helped me with the exam. I passed with a 77. I was very happy with that result."

Here is what Mr. Daniel L. had to say:"I passed guys. 81%. Thank you."

Excellent effort and well deserved. We are really happy for you. Enjoy your licences & the extra. Thank you for your trust & please tell more of your friends.