262416_Panelboards.pdf

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Attached to
Volusia County Branch Jail Air Handler-Fire Suppression System Removal, Replacement and Upgrade
Solicitation number
26-B-110IF
Issued by
Volusia County, Florida

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This is a Specification section for panelboards required for the Volusia County Branch Jail located at 1300 Red John Drive, Daytona Beach, Florida, with a bid set date of December 5, 2025. The specification outlines requirements for dead front type panelboards, modular meter centers, and load centers manufactured by ITE Siemens, Square D, or Eaton. Panelboards must comply with multiple industry standards including UL 50, UL 67, UL 489, UL 943, NEMA PB1, NEMA PB1.1, NEMA AB1, Federal Spec W-P 115, ANSI/NFPA 70 National Electrical Code, and ANSI/NEMA KS1. The specification includes detailed requirements for panelboard boxes fabricated from sheet steel with internal key tumbler locks, copper ground and neutral buses, main lugs rated for copper conductors, and field-convertible main lug to main breaker configurations. Factory-assembled panelboards shall have branch breakers arranged as specified with breakers numbered vertically from top left, minimum panel width of 20 inches, and bolt-on thermal-magnetic circuit breakers with trip-free handles and internal common trip for multi-pole breakers.

The specification mandates that circuit breakers serving air conditioning and refrigeration equipment be HACR-rated from the factory, with replacement breakers matching the exact panelboard manufacturer specifications. All panelboards require permanent plastic identification on covers indicating equipment name and voltage, along with updated typed circuit directories for modified panels showing exact loads and locations served. Specific requirements for shunt trip type breakers, ground fault protection, arc fault circuit breakers, increased interrupting capacity, and Nema 3R enclosures shall supersede standard specifications as indicated on drawings or schedules. Installation requirements include careful coordination with other trades for proper mounting and support, neat and workmanlike wiring within panel gutters secured with nylon 600V-rated tie wraps, torquing of all lugs per manufacturer recommendations, and prohibition of load center construction.

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BID SET VOLUSIA COUNTY

DECEMBER 5, 2025 BRANCH JAIL

PANELBOARDS 262416.00 - 1

SECTION 262416 - PANELBOARDS

PART 1 - GENERAL

1.1 SCOPE:

A. This section outlines the requirements for panelboards, modular meter centers and load centers.

B. New Panelboards shall be as manufactured by ITE Siemens, Square D, Eaton, PART 2 - PRODUCTS

2.1 PANELBOARDS:

A. Panelboards shall be dead front type and shall be in accordance with Underwriters' Laboratories, Inc., standard for panelboards and enclosing cabinets and so labeled.

B. The Panelboards and circuit protection devices shall be manufactured and tested according to the latest applicable standards of the following agencies:

1. UL 50, Enclosures and Electrical Equipment

2. UL 67, Panelboards

3. UL 489, Molded Case Circuit Breakers and Circuit Breaker Enclosures

4. UL 943, Ground Fault Circuit Interrupters

5. NEMA PB1, Panelboards

6. NEMA PB1.1, General Instructions for Proper Installation, Operation and Maintenance of

Panelboards Rated 600 Volts or less.

7. NEMA AB1, Molded Case Circuit Breakers and Molded Case Switches

8. Federal Spec W-P 115, Rev. C, Panel, Power Distribution

9. ANSI/NFPA 70, National Electrical Code

10. ANSI/NEMA KS1, Enclosed and Miscellaneous Distribution Equipment Switches (600V)

2.2 PANELBOARD BOXES:

A. Panelboard boxes shall be fabricated from sheet steel. A metal framed circuit directory card holder with clear plastic covering shall be welded on the inside of door. Panelboards shall be for surface mounting unless otherwise noted on the drawings. All Panelboards shall have internal key tumbler locks.

B. Ampacity and service voltage of main bus, lugs or main breakers and branch circuit breakers shall be as indicated in schedules. Entire panelboard shall be capable of withstanding a short circuit not less than the interrupting capacity of any breaker in the panel. Bus connectors shall be for distributed phase arrangement and shall be copper. Bussing shall be copper.

2.3 GROUND BUS:

A. Copper ground bus shall be furnished in all panelboards.

B. Provide Isolated ground bus as indicated on the drawings

2.4 NEUTRAL BUS:

A. Full size copper neutral bus shall be furnished.

PANELBOARDS 262416.00 - 2

2.5 MAIN LUGS:

A. Main lugs shall be rated for copper conductors and sized for conductors as shown.

B. Standard lighting and power distribution panels shall be field convertible from Main Lug to Main Breaker with no increase in panel height. Field-addable mains (bussed connected) sub-feed breaker or feed-thru lug kits shall also be available, without utilizing any branch circuit space.

2.6 MAIN BREAKERS:

A. Main breakers shall be provided as called for on the drawings.

B. Main breakers and or branch circuit breakers shall be shunt trip type where called for on the drawings.

2.7 ASSEMBLY:

A. Panelboards shall be factory assembled with branch breakers arranged as shown in schedules.

Breakers shall be numbered vertically beginning top left. Breaker numbers shall be permanently attached to trim. Panel shall be minimum 20" wide, unless specifically noted otherwise.

2.8 CIRCUIT BREAKERS:

A. Circuit breakers shall be bolt-on, quick break, quick make, thermal-magnetic type, for alternating current. Breakers shall trip free of the handle and tripping shall be indicated by the handle assuming a position between OFF and ON. Multi-pole breakers shall be internal common trip (handle ties are not permitted). Provide trip, frame, poles, and voltage rated circuit breakers as indicated on drawings. Circuit breakers serving air conditioning and refrigeration equipment shall be HACR rated from the factory by the manufacturer. Circuit breakers that are to be added to existing Panelboards shall match the exact Panelboard manufacturer frame, style, type and AIC fault current level.

2.9 SPECIAL REQUIREMENTS:

A. Any special requirements on the drawings or schedules, such as ground fault protection, circuit breakers, combination ground fault /arc fault circuit breakers , increased interrupting capacity, shunt trip type circuit breaker, feed thru panel boards, Nema 3R enclosures etc., shall supersede these specifications, but only insofar as that particular requirement is concerned and as indicated.

Provide integral step-down transformer for 120-volt circuit for integral shunt trip modules where shunt trip coils are indicated to be provided.

PART 3 - EXECUTION

A. All panel board dimensions shall be carefully checked and coordinated with the proper trades to insure proper mounting space and support.

B. Wiring in panel board gutters shall be done in a neat and workmanlike manner. Wiring shall be grouped into neat bundles and secured with nylon 600v rated tie wraps within all panel boards.

C. All lugs shall be torqued as recommended by the manufacturer.

D. Provide permanent plastic identification on cover for each panel board indicating equipment name and voltage.

PANELBOARDS 262416.00 - 3

E. Provide updated type written circuit directories for each panel board indicating the exact load and location of the load served for all panelboards that are being modified. .

F. Load center construction shall not be utilized.

END OF SECTION 262416

2.
1.1 SCOPE:
3.
2.1 PANELBOARDS:
1. UL 50, Enclosures and Electrical Equipment
2. UL 67, Panelboards
3. UL 489, Molded Case Circuit Breakers and Circuit Breaker Enclosures
4. UL 943, Ground Fault Circuit Interrupters
5. NEMA PB1, Panelboards
6. NEMA PB1.1, General Instructions for Proper Installation, Operation and Maintenance of Panelboards Rated 600 Volts or less.
7. NEMA AB1, Molded Case Circuit Breakers and Molded Case Switches
8. Federal Spec W-P 115, Rev. C, Panel, Power Distribution
9. ANSI/NFPA 70, National Electrical Code
10. ANSI/NEMA KS1, Enclosed and Miscellaneous Distribution Equipment Switches (600V)
2.2 PANELBOARD BOXES:
2.3 GROUND BUS:
2.4 NEUTRAL BUS:
2.5 MAIN LUGS:
2.6 MAIN BREAKERS:
2.7 ASSEMBLY:
2.8 CIRCUIT BREAKERS:
2.9 SPECIAL REQUIREMENTS:

11.

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