(F) Electric Heating Appliances Employing Resistance-Type Heating Elements Rated More Than 48 Amperes
These supplementary overcurrent protective devices shall be (1) factory-installed within or on the heater enclosure or provided as a separate assembly by the heater manufacturer; (2) accessible; and (3) suitable for branch-circuit protection.
- Where contained in ASME-rated and stamped vessels
- Where included in listed instantaneous water heaters
- Where installed in low-pressure water heater tanks or open-outlet water heater vessels
Informational Note: Low-pressure and open-outlet heaters are atmospheric pressure water heaters as defined in IEC 60335-2-21, Household and similar electrical appliances — Safety — Particular requirements for storage water heaters.