Equipment must be securely mounted to prevent movement or instability during
operation.

High-leg conductors must be clearly identified to avoid miswiring and hazards

Completed installations must be tested to ensure there are no unintended faults.

ESS can include batteries, flywheels, or capacitors designed to store energy for later use
in electrical systems.

Clear labeling ensures that personnel can quickly determine the disconnecting means’
purpose.

Grounding prevents electrical shocks and stabilizes voltage by directing excess current
to earth.

Equipment must be rated to handle fault currents at nominal voltage safely.

Arc-flash labels warn personnel of potential hazards during maintenance.

Demand Factor measures how much of the connected load is actually used during peak
operation.

Fault current markings verify that equipment can safely interrupt fault conditions.

Equipment must be protected against conditions like dampness or excessive heat
unless identified for such use.

Article 110 establishes guidelines for safe installation and maintenance of electrical
systems, ensuring accessibility and proper operation.

Dusttight enclosures are designed to limit dust entry to protect internal components
under specified environments.

Enclosure ratings ensure protection against conditions like rain, snow, or dust.

Unused openings must be securely closed to prevent entry of contaminants or hazards.

Disconnecting means must retain lockable features for operational safety.

Equipment must be installed and used per the manufacturer’s instructions as part of
compliance.

Article 110.5 specifies these materials for current-carrying conductors unless otherwise
noted.

Sufficient space ensures safe operation, maintenance, and emergency access to
electrical equipment.

The temperature rating of terminations, conductors, and devices must align to prevent
overheating.