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City of Everett 26 28 16-4 <br /> Inductive Charging Infrastructure for Everett Transit <br /> K. Integrally Fused Circuit Breakers: Thermal-magnetic trip element with integral limiter- <br /> style fuse listed for use with circuit breaker and trip activation on fuse opening or on <br /> opening of fuse compartment door. <br /> L. GFLS Circuit Breakers: Single- and two-pole configurations with Class A ground-fault <br /> protection (6 mA trip). <br /> M. GFEP Circuit Breakers: With Class B ground-fault protection (30 mA trip). <br /> N. Features and Accessories: <br /> 1. Standard frame sizes, trip ratings, and number of poles. <br /> 2. Application Listing: Appropriate for application; Type SWD for switching <br /> fluorescent lighting loads; Type HID for feeding fluorescent and high-intensity <br /> discharge lighting circuits. <br /> 3. Shunt Trip: Trip coil energized from separate circuit, with coil-clearing contact. <br /> 4. Alarm Switch: One NO contact that operates only when circuit breaker has tripped. <br /> 5. Auxiliary Contacts: Two SPDT switches with "a" and "b" contacts; "a" contacts <br /> mimic circuit-breaker contacts, "b" contacts operate in reverse of circuit-breaker <br /> contacts. <br /> 6. size, trip ratings, and conductor material. <br /> 7. Ground-Fault Protection: Comply with UL 1053; integrally mounted, self-powered <br /> type with mechanical ground-fault indicator; relay with adjustable pickup and <br /> time-delay settings, push-to-test feature, internal memory, and shunt trip unit; <br /> and three-phase, zero-sequence current transformer/sensor. <br /> 8. Undervoltage Trip: Set to operate at 35 to 75 percent of rated voltage without <br /> intentional time delay. <br /> 9. Key Interlock Kit: Externally mounted to prohibit circuit-breaker operation; key must <br /> be removable only when circuit breaker is in off position. <br /> 10. Zone-Selective Interlocking: Integral with electronic ground-fault trip unit; for <br /> interlocking ground-fault protection function. <br /> 11. Electrical Operator: Provide remote control for on, off, and reset operations. <br /> 12. Accessory Control Power: Integrally mounted, self-powered. <br /> 2.4 ENCLOSURES <br /> A. Enclosed Switches and Circuit Breakers: UL 489, NEMA KS 1, UL 50E, and UL 50, to <br /> comply with environmental conditions at installed location. <br /> B. Enclosure Finish: Enclosure must be finished with gray baked enamel paint, <br /> electrodeposited on cleaned, phosphatized steel (UL 50E Type 1). <br /> C. Operating Mechanism: Circuit-breaker operating handle must be directly operable <br /> through dead front trim of enclosure (UL 50E Type 3R. Cover interlock mechanism <br /> must have externally operated override. Override may not permanently disable <br /> interlock mechanism, which must return to locked position once override is released. <br /> Tool used to override cover interlock mechanism must not be required to enter <br /> enclosure in order to override interlock. <br /> 26 28 16 -4 ENCLOSED SWITCHES AND CIRCUIT BREAKERS <br />