HomeMy WebLinkAbout262416 - PANELBOARDS.pdfMatt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 262416 Panelboards Page 1 of 13
March 23, 2012
Section 262416
Panelboards
PART 1 � GENERAL
1.01 SUMMARY
A. Section Includes:
1. Lighting and appliance branch�circuit panelboards.
2. Distribution panelboards.
1.02 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections, apply to this Section.
B. Section 26 05 00 – Basic Electrical Requirements.
C. Section 26 05 53 – Identification for Electrical system.
1.03 kREFERENCES
A. Review the Drawings and all sections of the Specifications for equipment furnished by
other Contractors and the Owner throughout the entire project.
B. See references noted in Specification Section 26 05 00, Paragraph 1.03.
C. ANSI/NECA 1�2006 – Good Workmanship in Electrical Contracting.
D. NECA 407�2002 – Installing and Maintaining Panelboards
E. Federal specifications WP�115A – Panelboard Power distribution.
1.04 SYSTEM DESCRIPTION
A. Distribution panelboards and branch circuit panelboards for lighting. Power, and
emergency and standby power.
1.05 PERFORMANCE REQUIREMENTS
1.06 SUBMITTALS
A. Submit shop drawings and product data under provisions of Division 01 and Section
26 05 00.
B. Submit panel directories, after load balancing and upon completion of installation for
review by the Architect and Owner prior to installation in panelboards.
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 262416 Panelboards Page 2 of 13
March 23, 2012
C. Submit panelboards with specified layout with circuit breakers arranged in accordance with
the Contract Documents.
D. Product Data: For each type of panelboard, switching and overcurrent protective device,
transient voltage suppression device, accessory, and component indicated. Include
dimensions and manufacturers' technical data on features, performance, electrical
characteristics, ratings, and finishes.
E. Shop Drawings: For each panelboard and related equipment.
1. Include dimensioned plans, elevations, sections, and details. Show tabulations of
installed devices, equipment features, and ratings.
2. Detail enclosure types and details for types other than NEMA 250, Type 1.
3. Detail bus configuration, current, and voltage ratings.
4. Short�circuit current rating of panelboards and overcurrent protective devices.
5. Include evidence of NRTL listing for series rating of installed devices.
6. Detail features, characteristics, ratings, and factory settings of individual
overcurrent protective devices and auxiliary components.
7. Include wiring diagrams for power, signal, and control wiring.
F. Field Quality�Control Reports:
1. Test procedures used.
2. Test results that comply with requirements.
3. Results of failed tests and corrective action taken to achieve test results that comply
with requirements.
G. Operation and Maintenance Data: For panelboards and components to include in
emergency, operation, and maintenance manuals. In addition to items specified in
Division 01 Section "Operation and Maintenance Data," include the following:
1. Manufacturer's written instructions for testing and adjusting overcurrent protective
devices.
2. Time�current curves, including selectable ranges for each type of overcurrent
protective device that allows adjustments.
1.07 QUALITY ASSURANCE
A. Source Limitations: Obtain panelboards, overcurrent protective devices, components, and
accessories from single source from single manufacturer.
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 262416 Panelboards Page 3 of 13
March 23, 2012
B. Designed, manufactured and tested in accordance with the latest applicable standards of
ANSI, ASA, IEEE, NEMA, NFPA 70, and UL label, and meet Federal Specification WP�
115A.
C. Where equipment is utilized for service entrance, the equipment shall bear the UL "Suitable
for Service Entrance" label.
D. Product Selection for Restricted Space: Drawings indicate maximum dimensions for
panelboards including clearances between panelboards and adjacent surfaces and other
items. Comply with indicated maximum dimensions.
E. Electrical Components, Devices, and Accessories: Listed and labeled as defined in
NFPA 70, by a qualified testing agency, and marked for intended location and application.
F. Comply with NEMA PB 1.
G. Comply with NFPA 70.
1.08 DELIVERY, STORAGE, AND HANDLING
A. Deliver, store and handle materials in accordance with Division 01 and Section 26 05 00.
B. Remove loose packing and flammable materials from inside panelboards; install temporary
electric heating (250 W per panelboard) to prevent condensation.
C. Handle and prepare panelboards for installation according to NECA 407 and NEMA PB 1.
1.09 PROJECT CONDITIONS
A. Environmental Limitations:
1. Do not deliver or install panelboards until spaces are enclosed and weathertight,
2. Rate equipment for continuous operation under the following conditions unless
otherwise indicated:
a. Ambient Temperature: Not exceeding <minus 22 deg F > <23 deg F> to
plus 104 deg F.
b. Altitude: Not exceeding 6600 feet.
B. Service Conditions: NEMA PB 1, usual service conditions, as follows:
1. Ambient temperatures within limits specified.
2. Altitude not exceeding 6600 feet.
1.10 COORDINATION
A. Coordinate layout and installation of panelboards and components with other construction
that penetrates walls or is supported by them, including electrical and other types of
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 262416 Panelboards Page 4 of 13
March 23, 2012
equipment, raceways, piping, encumbrances to workspace clearance requirements, and
adjacent surfaces. Maintain required workspace clearances and required clearances for
equipment access doors and panels.
1.11 SEQUENCING AND SCHEDULING
A. Sequence and Schedule work in accordance with Division 01 and Section 26 05 00.
1.12 WARRANTY
A. Warranty in Accordance with requirements of Division 01 and Section 26 05 00.
B. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or
replace transient voltage suppression devices that fail in materials or workmanship within
specified warranty period
1.13 EXTRA MATERIALS
A. Furnish extra materials that match products installed and that are packaged with protective
covering for storage and identified with labels describing contents.
1. Keys: Two spares for each type of panelboard cabinet lock.
2. Circuit Breakers: Two spares (in excess of what is indicated on the panelboard
schedules) of the most common size and type for each lighting and appliance
branch circuit panelboard. (Spares for Distribution type panelboards shall be as
indicated on the panel schedule.)
3. Circuit Breakers Including GFCI and Ground Fault Equipment Protection (GFEP)
Types: Two spares for each panelboard.
PART 2 � PRODUCTS
2.01 APPROVED MANUFACTURERS
A. Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
1. Eaton Electrical Inc.; Cutler�Hammer Business Unit.
2. General Electric Company; GE Consumer & Industrial � Electrical Distribution.
3. Siemens Energy & Automation, Inc.
4. Square D; a brand of Schneider Electric.
2.02 GENERAL REQUIREMENTS FOR PANELBOARDS
A. Panelboards � General.
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 262416 Panelboards Page 5 of 13
March 23, 2012
1. General: Factory built up, enclosed assembles, dead�front construction with
phase sequence connection of branch circuits starting at the top left phase bus of
the chassis for both top and bottom feed panels.
2. Bus Bars:
a. Material: 98 percent conductivity silver plated copper designed for a
maximum temperature rise of 55 degrees C over a 40 degree C ambient,
equipped with pressure�type solderless lugs.
b. Supports: Front accessible bolts to connect buswork together for ease of
tightening, supported by glass�filled polyester type insulators. Porcelain
insulators or supports are not acceptable.
c. Ratings: At least of the same ampere capacity of the cables connected to
the mains. UL listed short circuit current withstand rating at least equal
to the short circuit rating of the largest overcurrent protection device
connected to the bus with the UL rating labeled at the top or bottom of
the assembly.
d. Utilize solid bus bar connections to the panelboard main bus for all
integral main circuit breakers or switches, sub�main circuit breakers or
switches, sub�feed circuit breakers or switches and bus sectionalizing
control relays or contactors. Use of insulated wire bussing for the above
is not permitted.
e. Multi�Section Panel: Sub�feed lug arrangement for main cable
connections.
f. Ground Bus:
1) New Panelboards: Provide equipment ground bus bars in all new
panelboards. Size ground busses to accommodate all branch
circuit wiring.
2) Existing Panelboards: Provide equipment ground bus bars in
existing panelboards where new feeder or branch circuit wiring is
installed. Size ground busses to accommodate all new branch
circuit wiring.
3. Lugs:
a. Provide pressure�type solderless lugs for bus bar connections in
panelboards without integral main circuit breakers or switches.
b. For sub�feed lug arrangements, provide an individual lug for each
conductor connection. Lugs rated for multiple�conductor use shall not be
utilized.
4. Integral Shunt Trip and Undervoltage Trip Devices: Factory wired to a terminal
block with the terminals properly identified for field connection to the associated
control wiring.
5. Spaces for Future Overcurrent Protective Devices: Fully bussed complete with
all necessary mounting hardware and removable filler plates.
6. Verify that sufficient and suitable branch circuit protective devices are provided.
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 262416 Panelboards Page 6 of 13
March 23, 2012
7. Conductor Connectors: Suitable for use with conductor material and sizes.
a. Material: Hard�drawn copper, 98 percent conductivity.
b. Main and Neutral Lugs: Mechanical type.
c. Ground Lugs and Bus�Configured Terminators: Mechanical type.
d. Feed�Through Lugs: Mechanical type, suitable for use with conductor
material. Locate at opposite end of bus from incoming lugs or main
device.
e. Subfeed (Double) Lugs: Mechanical type suitable for use with conductor
material. Locate at same end of bus as incoming lugs or main device.
f. Extra�Capacity Neutral Lugs: Rated 200 percent of phase lugs mounted on
extra�capacity neutral bus.
B. Conductor Connectors: Suitable for use with conductor material and sizes.
1. Material: Hard�drawn copper, 98 percent conductivity.
2. Main and Neutral Lugs: Mechanical type.
3. Ground Lugs and Bus�Configured Terminators: Mechanical type.
4. Feed�Through Lugs: Mechanical type, suitable for use with conductor material.
Locate at opposite end of bus from incoming lugs or main device.
2.03 LIGHTING AND APPLIANCE BRANCH�CIRCUIT PANELBOARDS
A. Panelboards: NEMA PB 1, lighting and appliance branch�circuit type.
B. Mains: As shown on the One Line Diagram or panel schedules. Main and sub�feed circuit
breakers shall be vertically mounted.
C. Branch Overcurrent Protective Devices: As shown on the One Line Diagram or panel
schedules.
D. Doors: Door in door, fully hinged front. Concealed hinges; secured with flush latch with
tumbler lock; keyed alike.
2.04 DISTRIBUTION PANELBOARDS
A. Distribution Panelboards: The following is in addition to the requirements specified under
Section 2.03.
1. Bus Bars and Mounting Frames: Designed so that any standard size switch and
fuse unit can be field mounted and connected when required for future circuit
changes or additions.
2. Quick�make, quick�break over front switch mechanism designed so that the
contacts cannot be teased, horsepower rated and capable of interrupting locked�
rotor current for the maximum size and voltage motor for which they are rated.
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 262416 Panelboards Page 7 of 13
March 23, 2012
3. Switch handle clearly indicate when the switch is "ON" or "OFF" and have
provisions for padlocking in the "OFF" position.
4. Utilize bolted connections and silvered current carrying parts.
5. Provide a single overall door covering all switch handles and filler plates.
B. Panelboards: NEMA PB 1, power and feeder distribution type.
C. Doors: Secured with vault�type latch with tumbler lock; keyed alike.
1. For doors more than 36 inches high, provide two latches, keyed alike.
D. Mains: As shown on the One Line Diagram or Panel Schedules. Main and sub�feed circuit
breakers shall be vertically mounted.
E. Branch Overcurrent Protective as shown on the One Line Diagram or panel schedules.
Bolt�on circuit breakers.
F. Main and branch circuit bus shall be based on 1000 amperes per square inch current
density. Contact surfaces shall be based on not more than 200 amperes per square inch
current density.
2.05 ACCESSORIES
A. Circuit Breakers:
1. Individual, thermoplastic molded�case, bolt�to�the�bus line side connection type
units that are removable from the front of the panelboard without disturbing the
remaining breakers in the panelboard or cabinet. Plug�in type are not acceptable.
2. Indicating type with "ON", "OFF" and "TRIPPED" positions of the operating
handle.
3. Quick make, quick break on manual as well as automatic operation, designed so the
contacts cannot be teased.
4. Inverse�current time characteristics secured through the use of a bi�metallic
tripping element supplemented by a magnetic trip coil.
5. Rated at or above the voltage to which they are to be applied.
6. Do not use AC rated circuit breakers for DC service unless they are UL listed for
both types of current.
7. Do not use any circuit breaker that is inadequate to carry its rated load or incapable
of interrupting the possible available short circuit current.
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 262416 Panelboards Page 8 of 13
March 23, 2012
8. Multi�Pole Circuit Breakers: Design for common trip operation so that an overload
or short circuit on any one pole automatically causes all poles to open
simultaneously.
9. Main Circuit Breakers: Separately mounted from grouped branch circuit breakers
for ease of identification and for safety when being manually operated as a
disconnecting means.
2.06 FABRICATION
A. Enclosures: Flush� and surface�mounted cabinets, as indicated on drawings..
1. Rated for environmental conditions at installed location.
a. Indoor Dry and Clean Locations: NEMA 250, Type 1.
B. Cabinets.
1. Tubs:
a. Code gage, galvanized steel.
b. Where two�section panelboards are provided, panel tubs shall be identical
in height and width.
2. Size:
a. Wiring Gutters: No less than minimum requirements of Article 373�6(a) of
NFPA 70.
b. Branch Circuit Overcurrent Protective Device 100 Amperes and Less:
Minimum 20 inches wide and 4 inches minimum wiring gutters.
c. Branch Circuit Overcurrent Protective Device Over 100 Amperes:
Minimum 32 inches wide and 7 inches minimum wiring gutters.
3. Panel Fronts and Trim:
a. Panel fronts and trims shall be cold�rolled steel finished with
manufacturer's standard baked�on gray enamel finish.
b. Panelboard fronts shall be “door�in�door” style with hinged front panel
allowing access to interior wiring connections with removal of screws
without removal of the entire front panel. Entire front trim hinged to box
and with standard door within hinged trim cover.
c. Front: Secured to box with concealed bolts. For surface�mounted fronts,
match box dimensions; for flush�mounted fronts, overlap box.
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 262416 Panelboards Page 9 of 13
March 23, 2012
d. Where two�section panelboards are provided, panel fronts and trims shall
be identical in height and width.
e. Front: Secured to box with concealed bolts. For surface�mounted fronts,
match box dimensions; for flush�mounted fronts, overlap box.
4. Keys: Equip outer door with a tumbler type lock with duplicate milled keys. For
doors over 38 inches in height, provide three point vault type, milled key, lockable
handles. Provide identical keys for all panelboard locks.
5. Directory Card: Inside panelboard door, mounted in transparent card holder.
2.07 FINISHES
A. Indoor.
1. NEMA standard epoxy painted fronts.
2. Galvanized steel tubs.
3. Panels and Trim: Steel, factory finished immediately after cleaning and pre�
treating with manufacturer's standard two�coat, baked�on finish consisting of prime
coat and thermosetting topcoat.
4. Back Boxes: Galvanized steel, unless surface mounted NEMA 4X with stainless
steel cover, then box shall be stainless steel.
2.08 DISCONNECTING AND OVERCURRENT PROTECTIVE DEVICES
A. Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
1. Eaton Electrical Inc.; Cutler�Hammer Business Unit.
2. General Electric Company; GE Consumer & Industrial � Electrical Distribution.
3. Siemens Energy & Automation, Inc.
4. Square D; a brand of Schneider Electric.
B. Molded�Case Circuit Breaker (MCCB): Comply with UL 489, with interrupting capacity
to meet available fault currents.
1. Thermal�Magnetic Circuit Breakers: Inverse time�current element for low�level
overloads, and instantaneous magnetic trip element for short circuits. Adjustable
magnetic trip setting for circuit�breaker frame sizes 250 A and larger.
2. Adjustable Instantaneous�Trip Circuit Breakers: Magnetic trip element with front�
mounted, field�adjustable trip setting.
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 262416 Panelboards Page 10 of 13
March 23, 2012
3. GFCI Circuit Breakers: Single� and two�pole configurations with Class A ground�
fault protection (6�mA trip).
4. Ground�Fault Equipment Protection (GFEP) Circuit Breakers: Class B ground�
fault protection (30�mA trip).
5. Molded�Case Circuit�Breaker (MCCB) Features and Accessories:
a. Standard frame sizes, trip ratings, and number of poles.
b. Lugs: Compression style, suitable for number, size, trip ratings, and
conductor materials.
c. Application Listing: Appropriate for application; Type SWD for switching
fluorescent lighting loads; Type HID for feeding fluorescent and high�
intensity discharge (HID) lighting circuits.
d. Ground�Fault Protection: Integrally mounted relay and trip unit with
adjustable pickup and time�delay settings, push�to�test feature, and ground�
fault indicator.
e. Shunt Trip: 120�V trip coil energized from separate circuit, set to trip at 55
percent of rated voltage.
f. Multipole units enclosed in a single housing or factory assembled to
operate as a single unit.
g. Handle Padlocking Device: Fixed attachment, for locking circuit�breaker
handle off position.
PART 3 � EXECUTION
3.01 EXAMINATION
A. Receive, inspect, handle, and store panelboards according to NECA 407 and
NEMA PB 1.1.
B. Examine panelboards before installation. Reject panelboards that are damaged or rusted or
have been subjected to water saturation.
C. Examine elements and surfaces to receive panelboards for compliance with installation
tolerances and other conditions affecting performance of the Work.
D. Proceed with installation only after unsatisfactory conditions have been corrected.
3.02 PREPARATION
A. Do not install panelboards directly to concrete walls, masonry walls or exterior walls.
Provide structural channels such as Unistrut to install cabinets at least 3/4 inch away from
concrete or masonry walls.
B. Where panelboards are to be installed in open area without wall for support, provide
structural steel channel (Unistrut or equal) to support panelboard tubs.
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 262416 Panelboards Page 11 of 13
March 23, 2012
3.03 INSTALLATION
A. Install panelboards and accessories according to NECA 407 and NEMA PB 1.1.
B. Install panelboards 72 inches from the finished floor line to the top of panelboard
enclosure.
C. Temporary Lifting Provisions: Remove temporary lifting eyes, channels, and brackets and
temporary blocking of moving parts from panelboards.
D. Mount panelboard cabinet plumb and rigid without distortion of box. Mount recessed
panelboards with fronts uniformly flush with wall finish and mating with back box.
E. Install overcurrent protective devices and controllers not already factory installed.
1. Set field�adjustable, circuit�breaker trip ranges.
F. Install filler plates in unused spaces.
G. Arrange conductors in gutters into groups and bundle and wrap with wire ties after
completing load balancing.
H. Comply with NECA 1.
3.04 IDENTIFICATION
A. Panelboard Designation Labeling: Provide panelboard designation labeling as specified in
Section 26 05 53.
B. Panelboard Circuit Identification:
1. Provide an indelible circuit number tag or label affixed to the panelboard front
immediately adjacent to each circuit breaker or to the dead�front breaker housing
frame for each individual branch circuit device or space. Circuit numbers affixed
to the panelboard front shall be aligned and centered horizontally with each circuit
breaker.
2. Identify multi�pole circuits by a single number where the circuit is indicated as
such on the Drawings.
C. Panelboard Directories:
1. New Panelboards:For panelboards with circuit directory card holders within front
doors, provide typewritten circuit directories as follows::
a. Provide a changeable directory card for each panelboard.
b. The directory cards shall be accurately and neatly typed with circuit
number, load identification and room number.
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 262416 Panelboards Page 12 of 13
March 23, 2012
c. If the Owner will be using room numbers other than those used on the
project documents, prepare the directory utilizing the Owner's designated
room numbers
d. The cards shall be card stock material of a minimum 65 pound basis
weight. The directory cards and directory frames shall be approximately
5 inches wide and fit the director card frame of the panelboard.
e. Provide transparent sheet plastic cover over directory card.
f. At each panelboard place the directory card in a directory frame on the rear
side of the door of each panelboard.
2. For panelboards without circuit directory card holders within front doors, provide
the field�installed identification labeling as specified in Section 26 05 53.
D. Identify field�installed conductors, interconnecting wiring, and components; provide
warning signs complying with Division 26 Section "Identification for Electrical Systems."
E. Create a directory to indicate installed circuit loads after balancing panelboard loads;
incorporate Owner's final room designations. Obtain approval before installing. Use a
computer or typewriter to create directory; handwritten directories are not acceptable.
F. Panelboard Nameplates: Label each panelboard with a nameplate complying with
requirements for identification specified in Division 26 Section "Identification for
Electrical Systems."
3.05 FIELD QUALITY CONTROL
A. Perform tests and inspections.
1. Manufacturer's Field Service: Engage a factory�authorized service representative
to inspect components, assemblies, and equipment installations, including
connections, and to assist in testing.
B. Acceptance Testing Preparation:
1. Test insulation resistance for each panelboard bus, component, connecting supply,
feeder, and control circuit.
2. Test continuity of each circuit.
C. Tests and Inspections:
1. Perform each visual and mechanical inspection and electrical test stated in NETA
Acceptance Testing Specification. Certify compliance with test parameters.
2. Correct malfunctioning units on�site, where possible, and retest to demonstrate
compliance; otherwise, replace with new units and retest.
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 262416 Panelboards Page 13 of 13
March 23, 2012
D. Panelboards will be considered defective if they do not pass tests and inspections.
E. Prepare test and inspection reports, including a certified report that identifies panelboards
included and that describes scanning results. Include notation of deficiencies detected,
remedial action taken, and observations after remedial action.
3.06 ADJUSTING
A. Adjust moving parts and operable component to function smoothly, and lubricate as
recommended by manufacturer.
B. Set field�adjustable circuit�breaker trip ranges as indicated.
3.07 CLEANING
A. Clean all panelboards at completion of work.
END OF SECTION 262416