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NEC Article 230, Services

Let’s take a closer look at Article 230 and the NEC 2020 Code changes, which covers service conductors and equipment for control and protection of services.

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2020 NEC | Article 590, Temporary Installations

Because temporary electrical installations present a special set of hazards, they have their own Article in the NEC code. Read more to learn about how to safely reinstall previously used services, parts, or components in a temporary installation.

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Recruiting Water and Wastewater Operators: Tips for Future Employees

This article discusses why wastewater is a good career choice, what skills and knowledge an operator needs, and how to find your first job in the water/wastewater field. 

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Developing Troubleshooting Skills for HVAC Technicians

Troubleshooting of HVACR systems and equipment can often become a time-consuming, frustrating process. Here are some fundamental concepts that can help anyone become a more proficient troubleshooter.

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The Rebirth of Analog Video Surveillance

We’re currently experiencing a resurgence of analog surveillance systems. Here’s where analog systems can work better than internet protocol (IP) ones!

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Venting Systems for Mid-Efficiency Furnaces

A vent is defined as a pipe or conduit that contains a passageway for conveying combustion products and air to the atmosphere. Products of combustion contain carbon dioxide, water, and sometimes carbon monoxide. Therefore, it is important to safely vent a gas furnace.

Modern gas furnaces are available with efficiencies that range from 80% to 98% Annual Fuel Utilization Efficiency (AFUE) ratio. Furnaces that are 90 to 98% AFUE are considered very efficient and utilize a category 4 vent system. This means that the flue gases operate under a positive vent stack pressure with a low vent gas temperature, causing the gases to condense before discharging from the vent. Venting materials used for category 4 furnaces are those recognized by the furnace’s installation instructions such as stainless steel, PVC, and ABS. Furnaces one tier lower in efficiency use more traditional venting methods than the 90+% units. Even though these systems are associated with conventional chimneys and vents, special attention must be given to their installation.

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NEC Article 230, Services

Most Recent

2020 NEC | Article 590, Temporary Installations

Recruiting Water and Wastewater Operators: Tips for Future Employees

Developing Troubleshooting Skills for HVAC Technicians

The Rebirth of Analog Video Surveillance

Recently in

Venting Systems for Mid-Efficiency Furnaces

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