Has anybody used the arc flash software from
www.arcadvisor.com ??
The cost is right and I don't need nor can I afford the fancy expensive programs.
Thanks
Spec grade receptacles are what I generally require.
BUT, IMO, the best way to assure you get a better receptacle for a reasonable cost is to require ALL receptacles be 20A vs 15A. Go to any big box store and see the difference in force required to pull out a 20A vs 15A. Dramatic.
Those 98...
The problem occurs when the breaker is tested outside the cubical and connected to a copper bar that's 1/2" thick, which is too much. The SquareD instructions specify the maximum bar thickness for connecting to the stabs.
Problem occures in less than 0.04% of breakers.
wareagle: (Auburn, obviously. My son went there.
The code does allow us to size services, thus main panels on demand. Lots of examples in Appendix D which is where We derived out demand figures.
DId I miss something?
Slightly different type question.
Church Service Size Question
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We are doing a church and several of us have a “discussion” going relative to the service size. The loads are as follows:
LOAD KVA Connected "Estimated" KVA Demand
Lights...
I have run into this on two projects so far this year. I even wrote a "white paper" to address the issue. How do I / can I attach a file??
The short answer is forget the existing UG raceway!
I just came from a school that was build about 40 years ago.
Although I didn't go and move it around, the wire looked fine. Several others of the same vintage looked about the same.
I have seen at industrial site where the insulation was 25 years old and if was cracked, although it was said...
we recommened our client hire KEMA. They are not cheap but they did a super job and the cient was VERY happy.
http://www.kema.com/consulting_services/transmission_and_distribution/index.asp
The local office is in NC.
I have seen numerous applications of VFD's both with and without isolation transformers. I have put in many without them with no problems.
I have a new project where the client want's to use them. The easy way out is to just put them in, but are they REALLY needed?
What are your...
This thread brings up a pet peeve of mine. The whole emergency lighting system seems to be a lose/lose issue. (Yeah, I'm in a bad mood!)
Individual emergency lights:
They don't last long, are a pain to maintain, and the NEC, etc. maintenance/verification requirements are onerous and very...
Our client had a disastrous power outage that resulted in major down time to a large industrial facility. As a result, we are in need of help from experts who can help in the areas below.
Do you know of anyone who can help!! We are in urgent need of these services.
STUDY:
We need an...