We wrote our final exams in wiring methods 2 (commercial code) and RLC circuits today. We were calculating power factor corrections ,current before and after unity, Farrads of capacities based on given figures and so on. Lots of information to try and cram in an older students head. We?re starting 3 phase and motor control after break. It?s going to be nice to see home in the daylight other than just weekends for awhile. I have an old silo room I?m going to tear down if the weathers fit and some other odd jobs around home when I?m not working the next 3 weeks. So far I?m pleased with the marks I?ve received on the labs completed and exams written.
- Thread starter Philip d
- Start date
larry@stinescorner
Well-known Member
The very best to you,,keep up the good work!!
fixerupper
Well-known Member
Congratulations. Dedication and hard work does pay off. Of course you are used to hard work and dedication.
knightstead
Member
Congrats. Pay very close attention and study hard with motor control. I?ve been close to the top of my class the last two years but motor control is not coming to me near as easily as the past subjects. Wish I?d taken it more seriously months ago, especially since we dive deeper next semester.
JimB2
Well-known Member
- Location
- Ottawa, Ontario, Canada
Philip, Congrats on your grades, hope you have some good weather to work on your farm projects.
In Philadelphia there is a real threat. Go down to Snyder Avenue and open up a fuse box. There are several blocks of 2 yes TWO PHASE service. What the &$$%^# is the deal with Five wires.??? Understand there are still several places in the US that has it. St. Lewes I think is one. Also not that many years ago in NYC and several other city's there used to be D.C. power to buildings. My grandparents up on 63 street the Brownstone they lived in was DC. You had to buy a special tube radio that had no transformers in it. Same for the little TV they had. The last DC in New York was down in the Wall Street area. Maybe ten years ago?. Just hope they never get into military power. Super efficient but a real killer is that 400 cycle stuff. It grabs you and doesn't let go. A long time ago I worked with Three phase...three phase Delta....and three phase "Y". Real fun when you have a 208 leg go high when the transformer on the pole shorted. Nothing like equipment reading 208.208.480. Fun fun fun! Lots of smoke let out. Blower motors that had pure charcoal interior components.
That?s very interesting,I?ve never heard of 2 phase power before. It?s amazing that it took that many years to replace all of the dc power with ac in buildings. I think it might have originated in the New York area with Edison but from what I read I think you had barely mile transmission ability with dc from the generator and in those days they were coal fired?
Mike(NEOhio)
Well-known Member
- Location
- Newbury, Ohio
Well done, phillip. Industrial electricians are in high demand these days.
dr sportster
Well-known Member
They are going to give you two starters and tell you to use them to reverse a three phase motor.
You bet. Edison was a real arse. Westinghouse and Tesla with AC able to go hundreds of miles got so tied up in court cases. Thank goodness he finnaly lost. Could you see us today with power stations every two or three miles? Copper wire wouldn't be efficient enough.how about pure silver. Forget aluminum. Take a look at the articles. Give your instructor a kick in the butt! 
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That doesn't surprise me at all. Not that he was a stupid person but the people who worked for him they basically had to sign everything over to him. Hundreds of pattens. Here is some two cycle information. Like I told ya, give your instructor a boot in the butt. See if he can tell you how stepper motors work. That stuff is really fascinating. Also I know you will never see military 400 cycle but a transformer the size of a loaf of bread turns into about the size of a box of animal crackers. Very efficient. No 60cy hum they sing. Knew a guy who was in the Navy. On a rolling sea he fell into a pannel. Woke up like two weeks later in Honolulu and they had been off Guam. Every white corpusel in him had blown up. That guy was one goofy mother if you get my drift.
knightstead
Member
I'm in the commercial program at IBEW Local One in St. Louis. Just hit 6,500 hours in the field and almost done with four of five semesters at school. The hands on part of wiring motor control has not been an issue but our written tests have been rough. The word problems list out what they want to happen, and in what sequence, and you have to draw the schematic. I was okay with the basic operations, but when you have three to four motors, 8 to 10 contacts, and have to figure out what's in parallel and in series then it gets pretty tricky. Best of luck to you, I'm sure you'll get through it fine.
Your doing wonderful! I?m just in my first year of training,I?ll be finished school early May then I?ll be ready to get out in the field. Here in Canada things are very similar but slightly different. Whoever of us is brave come May can challenge what they call the Block 1 exam. If we pass then we become registered apprentices. After we pass the block 1 exam once we have 2000 logged hours in the field we can go back for 11 weeks classroom training then write block 2. Same thing for 3&4. Once you pass block 4 you have your red seal which means you can legally work unsupervised start to finish. 2000 hours after block 4 you can again go back for your IP (inter provincial) which is what we consider a master electrician. So long as I have an achievable goal to work towards I don?t feel like I?m wasting my time.
Destroked 450
Well-known Member
- Location
- Harned, Ky
That parts easy, just make sure there's a working interlock between the starters so that both can't be activated at the same time.
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