In Canada, we use CSA C22.3. Similar to NESC, it's spacing requirements are quite minimal.
In my utility, we consider things such as:
- allow conductors of one tower to swing towards conductors of an adjacent line (which for conservatism, is assumed at rest). Ensure you have switching surge...
I'm not in the USA so I can't comment on NESC, but yes, the effect of wind and/or ice can affect the sag on the conductor.
As well, they are essentially a concentrated point load on the conductor, so armor rods are often added to provide mechanical strength/protection.
Your local aviation...
I'm 29, and I use a binder from Staples (office supply store) that includes sheets you slide the business cards into.
I sort mine alphabetically by Company name, and right the year I received the card in the top right hand corner, to keep track of how likely it is to be out of date.
Works well...
Oh, and I'll add that because they are only -1.0 from my regular prescription, I can navigate around the office fine for coffee, to the printer and back, for short meetings, etc. Faces are a little fuzzy, but most of the time it works alright.
Like another poster said, mine are optimized to...
I'm nearsighted, and found that wearing my regular glasses at the computer was causing migraines, and extreme difficulties in reading stop signs when driving home after work! My eyes got too used to focussing on the computer screen, and wouldnt relax back fast enough for distance vision.
My...
Hi ekieder! Sorry, I'm not on the boards often, but I use PLS-CAD daily.
Optimum Spotting only strings 1 phase of the entire tower, of whichever phase you select when using Optimum spotting. So it will not string in all of your conductors, unless you go back after and manually add them in.
Are...
@Murec - that's a novel idea that neither of us had - I'll definitely pass those tips on to him!
@Miningman - yes, we are in Canada. As my husband has previously been working 80+-hour weeks before quitting, and we've had previous experience doing the 'long distance for X weeks at a time'...
Thanks again Mike, to comment:
a) He's seen a few of the jobs come up on the board again, and especially with the two he REALLY wanted, keeps trying to persuade them. Unfortunately, both companies insist on using recruiters as a smokescreen, but he's gotten the names of the Hiring Manager and...
Thanks Mike, I'll pass along those tips.
In truth, he's had at least one interview a week, sometimes up to three, but in early all of them he's been told he either
a) he was the runner up,
b) he doesnt have enough design experience (previous work was maintenance engineering), or
c) he's doesn't...
If you have a 3.0, I generally have no concerns as an interviewer, as long as you are well-rounded with extracurriculars, hopefully some job experience, and TRANSFERRABLE SKILLS. If you have something less than a 3.0, THEN i worry a bit, as it can often indicate slacking.
Conversely...if I'm...
Looking for some 'industry experience' as I've been in the public-sector and haven't had to look for a job in years.
My husband left his previous job without a new one being lined up. (I won't state the reasons, but Employment Insurance found his claim and reason for quitting valid, and not...
The wife one is definitely true - we'd discussed it at length at one point (we were on good terms, I liked him) and he'd been away from home too much, they were looking to start a family. He still speaks fondly about our company and encourages me to stay here.
@Kenat - I'm not sure. Its been a whirlwind few months since he started, and I honestly can't recall in what detail we've discussed the issue.
I want to sit down and talk to him about it, but I want to firm things up in my own mind, and come up with solutions, so that I'm not "just a whiner"...
@truckandbus:
My employer has these two streams as well, at least in theory.
In reality, we are in a looming-deadline-work-crunch, and they don't need technical experts at this stage, they just need reasonably-competant people to get the work done. I tried speaking to my old boss, who...
Hi SteelPE, thanks for the comments:
1) Most of the newbies are a few years below me, so they are learning and its acceptable. A few others have more knowledge and perhaps should know better, but they seem to have taken my discussions with them with a grain of salt and better understand WHY the...
I feel very conflicted lately, and am interested in any viewpoints/suggestions that would assist me in dealing with my current work situation.
I work in a specialized multi-disciplined field of engineering, where alot of the senior staff has retired or moved on. In the last 5 years, I've gone...
Hi 7anoter4,
The Section I was reading was Pg 7-34, Section 7.8 "Electric Field Induction in Objects", from the EPRI Red Book 3rd edition. You might have a different version?
V_og = I_sc * Z_og
Where:
V_og = Voltage induced between object and ground
I_sc = current that would flow in a short...
Hi All,
I am looking at the preliminary line route for a new transmsision line, and there is a large building that may be subject to induced voltage due to its proximity to the ROW. I want to calculate the expected induced current to determine if it will be within allowable limits.
I've done...
I have used both Alcoa (now Southwire) Sag10, as well as PLS-CADD.
For the design of a full transmission line (from line routing, to prelim and detailed design, to checking and making quick field changes), PLS-CADD is supreme. I've been using it for 3 years as part of a large utility, and it's...
