Our expert was Eric Strombert, P.E., with Los Alamos National Laboratory.  Eric worked as a journeyman wireman before and during the time he attended college.  When he graduated with a degree in Electrical Engineering in 1982, he took a job as an electronic technician. He became a licensed fire alarm installation superintendent and spent the next seven years installing and maintaining life safety systems in high-rise buildings.  In 1989, he went to work for Dow Chemical where he designed power distribution systems for world-class industrial facilities.  He started teaching National Electrical Code classes to engineers in 1997.  He received his professional engineering license for the State of Texas in 2003.  In 2013, Eric retired from Dow Chemical and now works for Los Alamos National Laboratory in northern New Mexico where he is responsibble for the electrical standards for the lab.