What term does Article 110.5 define that refers to the integrity of electrical installations?

Article 110.5 of the National Electrical Code (NEC) defines "insulation resistance" as the measure of the integrity of electrical installations. This term is crucial because it assesses the effectiveness of insulation in preventing electrical leakage or faults that could lead to hazards such as short circuits or electrical shock.

Insulation resistance is typically measured in ohms, and the higher the resistance, the better the insulation's ability to protect against unintended current flow. Proper insulation in electrical installations is vital for ensuring both safety and reliability of the system, allowing it to function effectively without risk of failure or danger.

The other terms mentioned, while relevant in the context of electrical systems, do not pertain specifically to the broader concept of installation integrity as defined in Article 110.5. Ground faults relate to specific fault conditions, voltage drop refers to the reduction in voltage as electricity travels through conductors, and current rating pertains to the maximum current a device can safely handle. None of these terms encompass the overall integrity of electrical installations in the same way insulation resistance does.