General Construction Specifications
PART 1 - GENERAL
01 SECTION INCLUDES
A. Disconnect switches.
B. Fuses.
C. Enclosures.
02 REFERENCES
A. ANSI/UL 198C - High-Intensity Capacity Fuses; Current Limiting Types.
B. ANSI/UL 198E - Class R Fuses.
C. NEMA KS 1 - Enclosed Switches.
1.02 SUBMITTALS
A. Submit product data under provisions of applicable Sections of Division 1.
B. Include outline drawings with dimensions, and ratings for voltage, capacity, horsepower, and short circuit ratings.
PART 2 - PRODUCTS
03 ACCEPTABLE MANUFACTURERS - DISCONNECT SWITCHES
A. General Electric
B. Square D
C. Westinghouse
2.02 DISCONNECT SWITCHES
A. Fusible Switch Assemblies: NEMA KS 1; Type HD; quick-make, quick-break, load interrupter enclosed knife switch with externally operable handle interlocked to prevent opening front cover with switch in ON position. Handle lockable in OFF position. Fuse Clips: Designed to accommodate Class R fuses.
B. Nonfusible Switch Assemblies: NEMA KS 1; Type HD; quick-make, quick-break, load interrupter enclosed knife switch with externally operable handle interlocked to prevent opening front cover with switch in ON position. Handle lockable in OFF position.
C. Enclosures: NEMA KS 1; Type 12 indoors, Type 4X outdoors and where indicated on the drawings.
2.03 ACCEPTABLE MANUFACTURERS - FUSES
A. Bussman
B. Little-Fuse
C. Substitutions: Under provisions of applicable Sections of Division 1.
2.04 FUSES
A. Fuses 600 Amperes and Less: ANSI/UL 198E, Class RK1 or RK5; dual element, current limiting, time delay, one-time fuse, 250 and 600 volt based on circuit rating. Fuses shall be equal to Bussman types FRN and FRS for motor and transformer circuits, Bussman Type LPN and LPS otherwise.
B. Interrupting Rating: 200,000 rms amperes.
PART 3 - EXECUTION
04 INSTALLATION
A. Install disconnect switches where indicated on Drawings. Disconnects shall be installed with centerline 66 inches above finished floor or grade unless otherwise noted. Provide working clearance in front of disconnects as required by National Electrical Code Article 110.
B. Install fuses in fusible disconnect switches.
END OF SECTION
