Impedance or load imbalances got nothing to do with it. What you are dealing with is phase SHIFTING. Every time you send a circuit through a transformer you are going to get some amount of phase...
Type: Posts; User: wudwlkr
Impedance or load imbalances got nothing to do with it. What you are dealing with is phase SHIFTING. Every time you send a circuit through a transformer you are going to get some amount of phase...
Just because you can't do this type of work in the big city and you've never done it doesn't mean it's a dumb method. This is not a reconductor job, this is a complete replacement or rebuild. In...
OSHA does not say that everyone on a crew has to wear arc rated FR. What OSHA says is that the work has to be evaluated by the employer to determine if any workers have potential exposure to arcs. ...
I don't know about CSA but OSHA can and does set standards. While OSHA will generally follow industry consensus standards, if they don't feel those standards are adequate they can and will set their...
Nope, not root cause. WHY was improper grounding procedure used? Procedures? Training? Equipment? Supervision? All the above?
12.5 meters per second would be about 28 MPH.
fallenlinemen.org
As a general rule, no, linemen do not need to weld. However, it depends on what you want to do with your career. If all you want to do is poles and wires then forget about it. But if you want to...
Most all such equipment in the US is manufactured to ANSI 887 which allows for a maximum user weight of 310 pounds or 141 kg. Higher capacities can be made but the testing requirements change. Any...
I believe it was Bonneville Power up in the north west US that built a 1.2 million volt, 6 phase line back in the early 80s(?) for experimentation purposes. Just a few miles long. Strange looking...
OSHA announced Wednesday that the revised 1910.269 and 1926 Subpart V revisions will be published as final rules on April 11 in the Federal Register. You can download a copy of the rules now from...
Your pictures are fine Bren. Them other yahoos just don't know how to view them properly. Because of the way the site is designed and your pictures are so large, only the left half shows up in the...
Bren
Looking at your photos, is that barbed wire wound around the guy wires right below the guy insulators? Also what appears to be some kind of barricade mounted down low on the pole. Is there...
As mentioned, the NESC is written and maintained by IEEE which is a private organization and not the Federal Government. The code is a copyrighted property belonging to IEEE which they sell to...
See also Exception No 2 to Table 441-4 in the 2012 NESC.
"If electric equipment and devices are insulated, isolated, or both, such that the multiphase exposure on a grounded wye circuit is removed...
There is an Alma in Colorado also. Highest incorporated town in the country.
First heard of this accident from a posting on another web site. Had a link to another news source that had a photograph and video of accident site. Looks like crew was using a tracked...
Utility I used to work at years ago used these on almost all their transmission system for all voltages. Suspension, horizontal post, vertical post, everything. Preform makes em. Called Armour...
Looks like what we call AGS (armor grip suspension). Rubber "dog bone" over conductor, armor rods over that and then aluminum clamp overall. Can be mounted on posts or attached to string of bells. ...
Worked out of a small outpost office near Eagle, Colorado from the mid 70s to early 80s. Most Januarys you could count on a temperature inversion settling into that end of the valley and the temps...
You apparently have never been involved in an electrical contact accident lawsuit.
NESC has very specific requirements as to clearances above ground or other objects. Conductors must maintain...
Bren quick question for you. When you say 150 mm, are you referring to conductor diameter, circumference or cross sectional area? Trying to relate your wire size to ours.
NESC requires the use of an approved voltage detector and one is supposed to be standard equipment for every line crew. OSHA issued a letter of interpretation a number of years ago forbidding the...
Touche! LMAO
Absolutely right! EPZ is not new, has been around, literally, for decades. I am constantly amazed at the number of linemen and companies for that matter that refuse to even consider changing. If...