EM Test now offers the VDS 200Q Series four-quadrant voltage-drop simulator that can source and sink current using a programmed voltage in both positive and negative polarities. The amplifier ...

Let's start with DC voltage, one of the simplest and most-used multimeter measurements. The DC voltage measurement is used to determine the difference in electrical potential between two points in a ...

For an efficient design, the conductor ampacity tables in Chapter 3 of the National Electrical Code (NEC) provide a starting point. But did the installation stay efficient over time? One way to ...

Don’t be one of those people who saves money by sizing conductors only as large as you have to (by Code), but then turns around and recommends a big investment in a new lighting system to save energy.