grounding Archives

Tag: grounding

June 2017 Q&A

Written by Jim Vaughn, CUSP on June 7, 2017. Posted in iP Security Articles.

Q: We have a group reviewing our personal protective grounding procedures, and they are asking if we should be grinding the galvanized coating off towers when we install the phase grounding connections. What are your thoughts? A: In addition to your question, we also recently received another question about connecting to steel for bonding, so we’ll address both questions in this installment of the Q&A. Your question is about the effectiveness of grounding to towers, and the other question is about the effectiveness of EPZs created on steel towers. We’ll discuss the grounding question first...

Voice of Experience: Fundamentals of Underground Padmount Transformers

Written by Danny Raines, CUSP on June 20, 2015. Posted in iP Security Articles.

In recent months Incident Prevention has received several questions about underground (UD) padmount transformers, so in this installment of “Voice of Experience,” I’d like to take the time to cover the general aspects of these types of transformers. To begin, there are a few different types of single-phase and three-phase UD padmounts: live front with exposed live primary parts, 600-amp bolt-on elbows and loop feed with bushings and elbows. All of these transformers are available in several voltage ranges. The proper PPE must be worn when an employee is opening, entering and working on energized...