Based on the 2020 National Electrical Code. Part 1 of this two-part series taught you how to calculate branch-circuit loads. Now let's review how to perform feeder and service load calculations.

HONOLULU, HI — In commercial, residential, industrial, and institutional HVAC design, it is critical for design contractors and engineers to perform a load calculation. Not only is it important for ...

QUEBEC CITY - The great divide between HVAC contractors and engineers is probably at its widest point where residential load calculations are concerned. Contractors don't see a practical way to do ...

The electrical panel, also known as the service panel, is the control center for all the electrical circuitry in a residence. Today’s panels are bigger than earlier versions. They have to be, because ...

With energy prices continuing to rise, the costs of heating and cooling commercial buildings are straining the operating budgets of many commercial enterprises. To best serve their customers, HVAC ...

Many systems use an I 2 C bus for internal communications between devices, such as microprocessors, microcontrollers, memories, and other digitally-controlled devices. This bus topology relies on ...

When designing power distribution for a facility, you must assume a lighting load no less than that in Table 220.12 [220.12] if the table specifies your occupancy. Should you use this table for work ...