There are several color-coding schemes for control cables. Get quick links to them here…
Continue reading “Cable Color Code Charts”Cable Color Code Charts
Category: Sizing cable
Articles here are about how to size cables.
Power cable sizing tips video
You might be surprised at what you can learn in under three minutes. . . . Continue reading “Power cable sizing tips video”
Cable ampacity – insulation temperature rating vs. equipment terminal ratings
This can be a confusing topic. The issue usually arises in nuclear power plants because most cable is rated at 90 degrees C, but equipment terminals are rated for 60 or 75 degrees C. Getting this wrong leads to costly rework down the line. Continue reading “Cable ampacity – insulation temperature rating vs. equipment terminal ratings”
Some non-electrical concerns to take into account when installing new cables
Installing new cables? There is a standard set of problems you need to be aware of. They aren’t necessarily electrical problems . . . . Continue reading “Some non-electrical concerns to take into account when installing new cables”
Calculating short-circuit currents by hand
You won’t do many short-circuit hand calculations, but it’s useful to go through the exercise to develop an understanding of the fault behavior of typical electrical equipment. There are five you should get to know . . . . Continue reading “Calculating short-circuit currents by hand”
Three kinds of protective devices
There are three common types of protective devices you’ll encounter in the nuclear power industry. Here I summarize their functionality . . . .
Three fault regions of a time-current plot
In a previous article I discussed the importance of coordination curves. Here I provide some home-made examples. Yep, you got it. Fashioned in the fires of Microsoft Powerpoint . . . . Continue reading “Three fault regions of a time-current plot”
If your voltage-drop calculation fails
What do you do if, after sizing your cable and calculating voltage drop, your voltage drop exceeds what’s allowable? Continue reading “If your voltage-drop calculation fails”