The Groveton
SECTION 16180
OVERCURRENT PROTECTIVE DEVICES
PART 1
GENERAL
1.1
QUALITY ASSURANCE
A. Current editions of the following applicable standards, specifications, and codes shall
govern the work herein:
B. Underwriters Laboratories, Inc. (UL) 198, 489.
C. National Electrical Manufacturers Association (NEMA) FU-1, AB-1, AB-2 and SG-3.
1.2
RELATED WORK
A. The Contractor shall refer to Division 1 and other specification sections for requirements
related to LEED certification of this project. It is recognized that this project is being
submitted for certification under the “LEED for Homes” program and all products,
materials and methods shall conform to applicable requirements.
1.3
SUBMITTALS
A. Submit manufacturer, type, voltage rating, ampere rating, interrupting rating, and UL
class for each fuse used on project. Submit fuse characteristic curves if requested.
B. Submit manufacturer, type, voltage rating, ampere rating, poles, and interrupting rating
for all circuit breakers used on project.
PART 2
PRODUCTS
2.1
ACCEPTABLE MANUFACTURERS
A. Fuses (600 volts and less).
1.
2.
3.
Bussman.
Economy Fuse.
Gould Shawmut.
B. Panelboard circuit breakers.
1.
2.
3.
4.
2.2
General Electric.
Siemens
Square D.
Eaton (Cutler Hammer).
MATERIALS
A. Fuses (600 volts and less).
1.
Non-renewable cartridge type fuses (unless indicated otherwise) rated for
applied voltage. Bussman fuse nomenclature is used only to establish type,
quality, and coordination design. Supply all fuses by the same manufacturer
unless otherwise indicated.
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The Groveton
2.
Ten percent, but not less than three, additional fuses for each size and type fuse
used in all motor starter panels, power panels, and safety switches.
3.
Type SC, UL Class G: Current limiting, time delay, 0-60 amps, 300 volts,
100,000 amps interrupting capacity, current limiting on fault conditions.
4.
Limitron type, KTN-R, UL Class RK1: Current limiting, quick acting, 0-600 amps,
250 volts, 200,000 amps interrupting capacity, fuse shall clear phase to phase
short circuit fault in less than 1/4 cycle. Fuse incorporates rejection feature.
B. Panelboard circuit breakers.
1.
Shall be molded case indicating open, closed, or trip by handle position with
quick make/quick-break trip free over center toggle mechanism; thermal
magnetic trips or dual magnetic trips having long time and instantaneous tripping
characteristics; multi-pole breakers having one handle with common trip and
reset in one case, labelling indicating amp rating, voltage, RMS symmetrical
interrupting rating, UL listing and accessories or special features; plug-in type
unless noted otherwise; with rated voltage nearest to, but not less than, system
voltage applied.
2.
Where available fault current is indicated on the drawings for a panelboard,
provide circuit breakers in the panelboard with UL listed interrupting ratings, at
voltage applied, higher than the indicated available fault current. When a specific
manufacturer's circuit breaker types are indicated on the drawings, other
manufacturer's circuit breakers of equivalent ratings and quality may be used
ifapproved. If interrupting ratings are not indicated on the drawings or are not
described in the specification, report discrepancy and do not provide circuit
breaker until discrepancy is corrected.
3.
Ground fault circuit interrupting circuit breakers, where indicated, with minimum
interrupting rating of 10,000 AIC, 5 milliamps imbalance sensing level with
disconnect time not exceeding 0.30 seconds, and with button to test GFI
operation.
C. MDP circuit breakers.
1.
Shall be molded case indicating open, closed, or trip by handle position with
quick make/quick-break trip free over center toggle mechanism; thermal
magnetic trips or dual magnetic trips having long time and instantaneous tripping
characteristics; multi-pole breakers having one handle with common trip and
reset in one case, labeling indicating amp rating, voltage, RMS symmetrical
interrupting rating, UL listing and accessories or special features; bolt-on type
unless noted otherwise; with rated voltage nearest to, but not less than, system
voltage applied. Minimum 50,000 RMS interrupting capacity.
PART 3 EXECUTION
3.1
INSTALLATION
A. When no specific types fuses are indicated on the drawings, but fuses are required:
OVERCURRENT PROTECTIVE DEVICES
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The Groveton
1.
2.
Provide UL Class RK5 with time delay for all motor circuits and feeders, all main
overcurrent protection for feeders protecting two or more panelboards and all
transformer primary and secondary protection.
Provide UL Class RK1, quick acting, for primary protection of potential and
control power transformers, for all circuit connections made ahead of the service
main disconnecting means and feeders serving only one panelboard.
END OF SECTION
OVERCURRENT PROTECTIVE DEVICES
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