Learn more about the new Ericson upgraded versions of the extremely capable GFCI Solutions. Ericson invented and patented the first inline GFCI over 35 years ago after leading the industry with Ground Continuity Monitors, the forerunner of the GFCI. These devices make portable power connections infinitely safer, ensuring worker safety from electrical shock. Ericson Nonmetallic GFCI Solutions all exceed the Latest North American requirements (UL, CSA, and NOM) for Self-Testing Technology along with Open Neutral Protection – critical to portable power applications.