Michael Merzenich, Ph.D. is a pioneer in brain plasticity research and the author of more than 150 peer-reviewed articles. He has received numerous awards and prizes, has nearly 100 patents and has been featured in hundreds of books covering topics such as learning, rehabilitation and plasticity.
There shall not be more than the equivilent of four quarter bends (360 degrees total) between pull points, for example, conduit bodies and boxes. ansi/tia/eia-569-b: 8.8.2.2 Bends
Rigid conduit offers solid protection, while flexible conduit allows for bends and twists without the use of extra hardware. 1  Rigid metallic conduit is most often used in commercial applications but can be a smart choice for straight runs of wire or cable through an attic, garage, basement or crawlspace.