The requirements for PV equipment isolating devices or equipment disconnecting means are found in Sec.690.15(D) of the 2023 NEC. These materials are provided by Mike Holt Enterprises in Leesburg, Fla.

Maintaining isolation between high- and low-voltage EV systems is vital for safety and proper equipment operation. Attention must be paid to many systems and devices to ensure isolation is built in ...

The proliferation of high-voltage systems, propelled by the growing demands for electric vehicles, photovoltaic (PV) systems, and industrial control devices. The need for more advanced isolators to ...

It is a common practice to lockout and/or tagout control devices. In a nuclear power plant’s control room with its many analog controls, you might (for example) see red covers over specific switches.

To ensure compliance under 1910.147, hazardous energy sources, such as electrical, pneumatic, hydraulic, chemical and thermal energy, need to be properly isolated to a zero-energy state through a ...