Featured Blog Articles

Water

How Do I Renew My NC Drinking Water Operator License?

The NC Water Treatment Facility Operator Certification Board (NCWTFOCB) requires that all drinking water certified operators renew certifications annu[…]

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Air-Conditioning and Refrigeration Systems

How Today’s Energy Code Affects Mechanical System Installa...

In the recent past, a mechanical contractor could install very inefficient appliances and equipment with no thought to energy costs. Energy rates were[…]

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Electrical & Trade Licensing

How To Make Money As An Electrician

According to the Bureau of Labor Statistics, the median wage for workers in the United States in the first quarter of 2019 was $905 per week ($22.[…]

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2017 National Electrical Code

Conductor Derating on a Rooftop Made Easy

Derating conductors for the environment where they are installed is an important consideration for selecting the type and size of conductor for a part[…]

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Water

Working Together in the Water Industry: Owners and Operators...

Drinking water, wastewater, remediation, landfill, land application operations, and other operations are intertwined with little formal association wi[…]

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Air-Conditioning and Refrigeration Systems

Sound Powered Air Conditioning

What if a refrigeration system could exist without a mechanical compressor, oil, or the typical blended refrigerant? A totally new design that require[…]

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