About 20 years ago, I worked on a project where the Square D MCC's were to be replaced, not because they were damaged or worn out, but because they were made in the early 1940's and Square D didn't have replacement parts. There was a need for new starter buckets, but they weren't available to...
Semms as if Plasgears has concluded that a bachelors degree is necessary for good engineering to take place. He says "we have staffed our engineering departments in first and lower tiers with promoted draftsmen and lesser talents." In my particular industry, some of the best engineers...
Rod, I too hope the SUV craze is over soon, and the sooner the better off we all will be. Many of those drivers seem to think they are on the NASCAR track.
Greg, In one of your earlier post. you seem to think that emissions are not a problem. If I misunderstood you post, I apologize. Otherwise...
LenB, Most of the tap rules have been in the NEC since I started in this business in 1966. So you would have to go back beyond that to get the Reports and Code Committee members lists. Then you might be able to determine when and why these rules are in the Code. As peebee points out, in most...
CandyBar, Check with your local Crouse-Hinds Rep. There was an explosion somewhere around NJ(I don't know when), and the investigation revealed some leakage through the seals, and that this can happen under the right circumstances. My local rep. says there were some solutions made for your...
Most manufacturers in the USA ship MCC's in about 3 vertical sections which will need to be bolted together at the site. Also, when the busbars are bolted together, make sure the team uses the proper torque values.
Thanks to both you gentlemen for your help. The esmagazine article comes the closest to answering my question, so far. It does appear that there are no such published data or any tabulated information. So I guess its time to begin the chase to the manufacturers for information and do my own...
Looking for published data or "standard" (such as ANSI, ASHRAE, or other reliable source) in tabular form, if possible, of heat loss in electrical equipment, such as starters, busduct, low and medium voltage breakers, power circut breakers, etc. I presently have some unpublished data...
Is there a good reference manual for the proper placement and locating of HEPA filters in ceilings of clean rooms? And how strict is that placement/location?
