Critter Guard, Inc., was founded in 2000. Their two primary products are the CG Line Guard and CG Pole Guard. Both are designed with the utility company and preservation of wildlife in mind. The focus of the products are to deter and prevent squirrels, roof rats and other rodents from gaining access to power stations where they inflict damage and cause costly power outages.

Principal Sales, Inc. is proud to represent the quality products of Critter Guard, Inc. in Ohio, Kentucky, Indiana, Western Pennsylvania and West Virginia

Dynamic Ratings' Comprehensive Transformer Monitoring Systems can be designed to economically monitor most of the common transformer failure modes including windings, bushings, LTC’s and others. Greatly improve the ability to capture impending failures early enough to allow a scheduled shutdown and outage thereby preventing major failures.

Principal Sales, Inc. is proud to represent the quality products of Dynamic Ratings, Inc. in Ohio and Indiana

Instrument Transformer Equipment Corporation (ITEC) offers Quality Dry, Molded and Oil-filled Instrument Transformers for applications from generation through transmission and sub-transmission to distribution systems. Avoid loss of critical protection and revenue metering by replacing aging equipment. Original instrument transformer designs from selected 600 volt through 230 kV units.

Principal Sales, Inc. is proud to represent the quality products of ITEC in Ohio, Kentucky and Indiana