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I have a project where the facility has a 4000 Amp RL Siemens Switchgear lineup as part of a double ended substation. The gear is fed from a 2000KVA transformer and the available fault current is about 69kA at 208 volts. The 4000 Amp main is rated 85kAIC but some of the feeders are rated 30kA...

I have heard that when a stand-by generator is connected to a UPS, the generator should be rated at least 3 times the KVA rating of the UPS. Does anyone know where this recommendation comes from? I have a project with a 200 KVA UPS system which would require a minimum of 600KW worth of...

There is a program called Smart Notes which may work for you. I have included a link to the web site: http://cadopolis.com/prodsmartnotes.asp Check it out

Has anyone here used Autodesk Building Systems 3? I am interested to find out if it is worth the price tag for the use of the electrical portion of the package.

I am currently using Spanner from Wisbeck and Fraser CADTools. Check it out at: www.wfcadtools.com Spanner takes your Excel spreadsheet and creates a transfer file that you can insert into AutoCAD. Once inserted, the spreadsheet can easily be updated to reflect any changes you made in Excel...

To print plot files from the DOS prompt: Go to the directory where the plot files are located if your printer is connected to the lpt1 printer port, then type in the following command: copy *.plt lpt1 or type in this command if printer is on a network: copy *.plt \\servername\sharename...

I use a software program called view companion. It is $49 for a single license. You can view and print plot files and you can also convert to pdf and bunch of other file formats. Check it out at www.softwarecompanions.com

I have recently taken and passed the EE PE exam. I recommend you take a look at the EE reference book, 6th edition by Camera. The format of the test requires that you answer 40 multiple choice questions about all topics of electrical engineering in the morning session, then you can pick a depth...

We have had this problem as well. Check to see that your paper size is correct in the plot dialog box. On our setup there is a 24 x 36 (oversize) paper option. If you choose this paper size by mistake the paper will print out larger than the standard paper size. This may explain why you are...

thanks hbendillo, I will add your suggestion to my spreadsheet. I am also looking to automate the whole process. I would like to setup the spreadsheet so that it would automatically rearrange the loads so that the panel is balanced, but I don't know how to do it. I have projects that have as...

Has anyone here used Dodge Reports to do market research for new leads in MEP engineering consulting work? I am an Electrical Engineer looking for new ways to drum up new business. I know the Dodge Reports are geared towards contractors but I was wondering if they had any value to the...

Are you using an HP plotter? I had the same problem. The solution for me was to double click a file HPSETUP.EXE in the AutoCAD directory and select disable plot memory optimization. Hope this helps.

Does anyone have a spreadsheet to balance the load of a three phase panelboard? I am currently using a simple spreadsheet to total the loads on the three phases but I need to modify my spreadsheet to balance the loads per phase to within 10 percent of one another. Any information would be...

Can anyone recommend a good textbook about VFD's with practice problems for the PE exam?