What is the requirement for Class A ground-fault circuit interrupters in terms of continuous current?

The requirement for Class A ground-fault circuit interrupters (GFCIs) in relation to continuous current is that tripping shall occur at 6 milliamperes. This standard is established to ensure a balance between providing adequate protection against ground faults and preventing nuisance tripping. The 6-milliampere threshold is designed to protect individuals from electric shock while minimizing the likelihood of the circuit interrupter tripping under normal operating conditions, where minor ground faults may occur but do not pose an immediate risk.

In essence, this requirement enhances safety by allowing the GFCI to detect faults effectively while maintaining operational reliability in various environments, especially where electrical devices are frequently used. This awareness of the GFCI's operational characteristics is crucial for ensuring safety compliance in electrical installations.