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Our Companies

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Potomac Testing, established in 1985, has earned its position as an industry leader in comprehensive low, medium, and high voltage electrical equipment services: from NETA acceptance and maintenance testing, planned and emergency field services, power quality and engineering studies, to retrofitting and refurbishment of electrical equipment.

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In 2020, Electrical Maintenance & Testing (EMT) was acquired as a division of Potomac Testing.  Based in Carmel, Indiana, EMT is a NETA Accredited independent third party electrical testing firm, specializing in power distribution equipment testing, maintenance, and life extension services. EMT also provides Engineering Services, including Short-Circuit, Coordination, and Arc Flash Hazard Analysis.

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In 2020, Northern Electrical Testing Inc. (NET) was acquired as a division of Potomac Testing.  Northern Electrical Testing is an independent service company established in 1979 and based in Troy, Michigan. The company provides electrical power system acceptance and maintenance testing services, engineering studies, and emergency power restoration services. Accordingly, it provides independent third party, objective testing and analysis, free of the influence of manufacturers and installers of electrical power distribution equipment, emergency generators, paralleling switchgear, and automatic transfer switches. The company’s services are utilized by owners and consulting firms to provide site data and supporting engineering studies to complement their design projects.

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SERVICES DIVISION

The Services Division of Technical Diagnostic Services, LLC (TDS), based in Dallas/Ft. Worth, TX, has been delivering industry-leading service solutions for over 25 years that empower its customers to safely start up and optimize the performance of their facilities’ electrical and controls systems. TDS provides electrical, instrumentation and control testing and start-up and commissioning services to the power, oil & gas, process industries and other industrial end markets.

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EQUIPMENT DIVISION

The Equipment Division of Technical Diagnostic Services, LLC (TDS), based in Dallas/Ft. Worth, TX, delivers industry-leading test equipment solutions that empower its customers to safely start up and optimize the performance of their facilities’ electrical and controls systems. TDS’s Equipment Division provides electrical test equipment rental, sales, calibration and repair to the power, oil & gas, process industries and other industrial end markets.

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