Is ground-fault protection required for feeder disconnects rated at a minimum of 1000 amperes?

Ground-fault protection is indeed required for feeder disconnects that are rated at a minimum of 1000 amperes. This requirement is in place to enhance safety by reducing the risk of electric shock and fire hazards associated with ground faults. The National Electrical Code (NEC) outlines protective measures that must be taken for equipment and systems to ensure safe operation.

In environments with high amperage, such as those over 1000 amps, the risk of ground faults increases, necessitating robust protection mechanisms. By requiring ground-fault protection, the code aims to minimize the risk of electrical shock to personnel and limit damage to electrical equipment, thereby ensuring both operational safety and reliability.

The other choices, while plausible in different contexts, do not align with the general safety standards established for feeder disconnects of such a capacity. Understanding the importance of ground-fault protection helps reinforce the goal of maintaining safe electrical systems in all installations, particularly where significant amperage is present.