ADDENDUM NO. 1 ITB-DOT BAT. You are hereby notified that the above referenced Invitation to Bid (ITB) is modified as shown below:

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1 ADDENDUM NO. 1 ITB-DOT BAT To: All Prospective Proposers From: Ashley Henning District Five Contractual Services Date: March 25, 2016 RE: ITB-DOT BAT ITS Battery Installation You are hereby notified that the above referenced Invitation to Bid (ITB) is modified as shown below: 2) TIMELINE Provided below is a list of critical dates and actions. The location of all meetings will be at the address listed on the Cover Sheet, unless specified otherwise below. These dates are subject to change. Notices of changes (Addenda) will be posted on the Florida Vendor Bid System at (click on BUSINESS, click on Doing Business with the State, under Everything for Vendors and Customers, click on Vendor Bid System (VBS), click on Search Advertisements ) under this bid number. It is the responsibility of all potential bidders to monitor this site for any changing information prior to submitting your bid. The Technical Memorandum dated 3/15/16 included in Exhibit A, Scope of Services is replaced in its entirety by the attached Technical Memorandum dated 3/25/16. TO ACKNOWLEDGE RECEIPT OF THIS NOTICE AND ALL CHANGES, PLEASE SIGN AND RETURN BY E-FAX TO THIS OFFICE AT BY April 12, Name of Company: Authorized Signature: Date: FAILURE TO FILE A PROTEST WITHIN THE TIME PRESCRIBED IN SECTION (3), F.S. SHALL CONSTITUTE A WAIVER OF PROCEEDINGS UNDER CHAPTER 120, F.S. Addendum No. 1, ITB-DOT BAT Page 1 of 1

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3 Table of Contents Table of Contents i List of Acronyms ii 1.PROJECT OVERVIEW 1 2.EXISTING ELECTRICAL CONDITIONS 1 3.EXISTING PANELBOARD ANALYSIS 1 4.PROPOSED MODIFICATIONS TO MAIN PANELBOARD 4 5.ESTIMATED MATERIAL LIST 7 6.RECOMMENDATIONS AND CONCLUSION 8 APPENDIX A N.E.C. TABLE (B)(16) 9 APPENDIX B ELECTRICAL PLANS 10 Addition of UPS and Panel Boards Serving 1st and 2nd Floors Data Centers i

4 List of Acronyms AMPS ATS FPL I KCMIL KVA KW NA NEC P UPS V XFRM Watts Amperes Automatic Transfer Switch Florida Power & Light Current Thousand Circular Mils Thousand Volt-Amps Thousand Watts Not Applicable or Not Available National Electrical Code Power Uninterruptible Power Supply Volts Transformer Wattage Addition of UPS and Panel Boards Serving 1st and 2nd Floors Data Centers ii

5 1. PROJECT OVERVIEW The work performed as part of this report includes analyzing the as-built documentation and field reviewing the existing electrical system of the existing District 5 Headquarters located at 719 South Woodland Blvd., Deland, Florida to determine what electrical system modifications are required to accommodate additional proposed equipment power loads to be added to the existing electrical system and back-up generator power. In addition, this report will also determine the electrical elements to connect the new load, including wire and conduit sizes and length, panelboard and breaker sizes. 2. EXISTING ELECTRICAL CONDITIONS In order to document the existing condition of the building power system, a panel schedule of the main panelboard was developed. The main panelboard matrix shown in Section 3 includes sub panel names, circuits, wire sizes and loads. Due to the age of the building, no as-builts or panel schedules were available to verify the design load information. Therefore, intensive field reviews were performed to determine wire sizes, circuit breaker sizes, and to measure actual loads (using a Multimeter). The District 5 building is powered utilizing one main distribution panel, called Main Panelboard. The Main Panelboard is rated at 4000 Amps and its bus is rated 2000 Amps. The Main Panelboard is located in the Main Electrical Room on the first floor and it is 3 phase 277/480 Volts. The Main Panelboard line wires are 4 sets of 500 Kcmil wires. The main panel board is fed from both utility power and back-up power system via an Automatic Transfer Switch (ATS). The back-up generator is rated at 800 KW and the ATS has a 1200 Amp capacity. (See Appendix B for existing electrical room floor and electrical riser diagram). Prior to designing the installation of the new electrical system, the existing system was analyzed for available expansion as well as any potential deficiencies. This analysis included verification of wire sizes, circuit breaker sizes, panelboard ratings, and generator ratings. 3. EXISTING PANELBOARD ANALYSIS There are a total of four existing panelboards (LE, LIC, HE and Main) located inside the District 5 building Main Electrical Room. These existing panel boards were evaluated to make sure they adhered to NEC code requirements. There was one NEC violation found within these panels: Panel HE circuit 25: There are 2 wires connected to this circuit. Per the NEC Article only one wire shall be connected to a breaker lug. Recommendation: relocate one of the wires to circuit 24 (open breaker spare). Addition of UPS and Panel Boards Serving 1st and 2nd Floors Data Centers 1

6 The entire building is backed-up by the generator system and the Main panelboard has space available for a new circuit breaker. The Main panelboard will be used to add the additional loading of future equipment data room. See the Main panelboard schedule below. EXISTING CIRCUITS IN MAIN PANEL BOARD Mounting 277/480 Volts PANELBOARD MAIN 4000 Main Lug Floor 3 Ph. 4 sets of #500 Cmil LOCATION ELECTRICAL ROOM 2000 Bus Size Amps Frame Breaker Number Wire Size Circuit # Destination Phase A Phase B Phase C Size Size Poles AWG or Kcmil x 3/0 1 Panel "LA" x 3/ x 3/ Panel "TI B" /0 3 Panel "H1A" /0 20 1/ x 3/0 4 Panel "HE" x 3/ x 3/0 56 1/0 5 FIRE PUMP /0 56 1/ EL EOC Disconnect /0 8 T1 A / / EL SPACE N. EL CORE 75 KVA XFMR /0 12 UNKNOWN / / SPACE 0 0 Total Connected (AMPS) : AMPS TOTAL Connected Load (KVA): KVA Addition of UPS and Panel Boards Serving 1st and 2nd Floors Data Centers 2

7 The contents of the panelboard are described below: The top section of the panel schedule spreadsheet provides basic information for the panelboard such as mounting type, panel name, main lug size, bus size, voltage, number of phases, number of wires, size of the wires, and the location where the panelboard was installed. The body of the spreadsheet identifies the panelboard and its individual circuits. Please note that when field reviewing the panelboards, it was observed that some labels located at the panelboards were inaccurate. Therefore some circuits were named Unknown : Circuit number: The number of the circuit within the panelboard. Destination: Description of the load. Amp (per phase): This is equivalent to amperage. Note that these numbers were obtained by amp probe reading. They are not design loads. Frame Size: The frame size to hold the circuit breaker. Breaker Size: The circuit breaker is for overload protection. When designing a new circuit, the load was verified to be a maximum of up to 80% of the circuit breaker rating. For example, if the circuit breaker is a 20A single pole, the load should be a maximum of 16A. Number of Poles: This is the number of poles of the breaker. It can be 1, 2 or 3. Wire size AWG or Kcmil: Proper wire size is critical to the circuit. When calculating the wire size, the maximum amperage per wire size allowed by NEC can be found on Table (B) (16)) (See Appendix A). To finalize the panelboard analysis, the Total measured Load (AMPS) and Total measured Load (KVA) of the panelboard was calculated. The total KVA load is the sum of all three phases times the voltage per phase (277V) divided by 1,000. The total measured load is determined by utilizing the field measurements. The total AMPS are the total KVA divided by (for 277V/480V). Addition of UPS and Panel Boards Serving 1st and 2nd Floors Data Centers 3

8 4. PROPOSED MODIFICATIONS TO MAIN PANELBOARD After performing an analysis of the existing power system, an analysis of the future needs for the electrical system, the UPS system, and the generator system was conducted. In particular, the effect of implementing a new data room on the first floor and the associated servers, and the addition of equipment required for implementing the overall system was reviewed and analyzed. The new data room will include new equipment as well as some existing equipment to be relocated from the second floor data room. The exact anticipated loads for the new data room are not yet known as the equipment has not yet been determined. However, the installation of a 225 Amp panel, ITS UPS 1, with four 60 Amp circuit breakers will be capable of powering all proposed and existing equipment to be installed in the 1 st floor data center. The installation of a 225 Amp panel, ITS UPS 2, with two 60 Amp circuit breakers will power existing equipment previously powered by the UPS. The assumption for the calculations used in this report is that all the proposed power loads are to be backed-up by a new 100 KW UPS system. The existing 2 nd floor data center has a measured load of a maximum of 80 Amps/phase (including the existing UPS). Therefore, the load for the new data center will be assumed to be a maximum of 160 Amps/phase (design load). The load for the new data center was added to the Main panelboard schedule and it is shown on the following page. Addition of UPS and Panel Boards Serving 1st and 2nd Floors Data Centers 4

9 EXISTING AND PROPOSED CIRCUITS IN MAIN PANEL BOARD Mounting 277/480 Volts PANELBOARD MAIN 4000 Main Lug Floor 3 Ph. 4 sets of #500 Cmil LOCATION ELECTRICAL ROOM 2000 Bus Size Amps Frame Breaker Number Wire Size Circuit # Destination Phase A Phase B Phase C Size Size Poles AWG or Kcmil x 3/0 1 Panel "LA" x 3/ x 3/ Panel "TI B" /0 3 Panel "H1A" /0 20 1/ x 3/0 4 Panel "HE" x 3/ x 3/0 56 1/0 5 FIRE PUMP /0 56 1/ EL EOC Disconnect /0 8 T1 A / / EL /0 10 ITS UPS (1ST FLOOR) / / N. EL CORE 75 KVA XFMR /0 12 UNKNOWN / / SPACE 0 0 Total Connected (AMPS) : AMPS TOTAL Connected Load (KVA): KVA Addition of UPS and Panel Boards Serving 1st and 2nd Floors Data Centers 5

10 After entering all information into the panelboard schedule as described above and verifying the information in the field, the proposed connected load for the data center was added to the spreadsheet and analyzed to ensure the existing generator, ATS, and main panelboard would be able to accommodate the additional equipment. An additional 25% of capacity was added to the total existing load for contingency, since the loads used were measured loads and not design loads. The results are the following: EXISTING ITEM CAPACITY MEASURED LOAD Add. 25% PASS/FAIL 1 EXISTING MAIN PANEL WIRE SIZE (AMPS) PASS 2 ATS 80% PASS 3 EXISTING GENERATOR 80% PASS PROPOSED ITEM CAPACITY DESIGN LOAD Add. 25% PASS/FAIL 4 NEW CIRCUIT WIRE SIZE (AMPS) NA PASS 5 NEW CIRCUIT BREAKER 80% NA PASS To calculate the capacity from the table above, the following criteria were used: 1. Wire size: 4 Sets of 500 kcmil Per N.E.C TABLE (B)(16): Each 500 Kkcmil max ampacity = 380 Amps ATS size = 1200 Amps Capacity = 80% of ATS Ampacity % Generator size = 800 KW Capacity = 80% of Wattage % Wire size: 4/0 AWG Per N.E.C TABLE (B)(16): 4/0 AWG max ampacity = 230 Amps 5. Breaker size = 200 Amps Capacity = 80% of Breaker Ampacity % 160 Addition of UPS and Panel Boards Serving 1st and 2nd Floors Data Centers 6

11 5. ESTIMATED MATERIAL LIST Power Equipment Description Quantity 225A 3 Pole circuit breaker enclosure 200A Breaker (480/277V) 1 225A 3 Pole 42 Circuit Panelboard (208/120V) 1 100A 3 Pole 42 Circuit Panelboard (208/120V) 1 60A Pole breaker (208/120V) 6 2.5" RGS Conduits #4/0 AWG 80 1 #4 AWG 80 4 #2 AWG 20 1 #8 AWG 20 Incidental Materials 1 Addition of UPS and Panel Boards Serving 1st and 2nd Floors Data Centers 7

12 6. RECOMMENDATIONS AND CONCLUSION Information for the panelboards, while graphically showing their respective relations to each other, the UPS, the generator and the utility power are shown in form of a riser diagram. The riser diagram also shows information of the new panel schedule and locations for the installation, including conduit sizes. Based on existing as-built research, revisions and Multimeter results, the existing generator and main service panel are capable of powering the proposed equipment and service panels. Utilizing a spare circuit in the main panel, a 200A 3-pole 277/480V breaker will be installed to power a proposed 100 KW ITS UPS to be housed in the first floor data center. The UPS will then power a 3-phase transformer which will then power two proposed service panels: ITS UPS 1 and ITS UPS 2 (See Appendix B for Electrical Plans). Addition of UPS and Panel Boards Serving 1st and 2nd Floors Data Centers 8

13 APPENDIX A N.E.C. TABLE (B)(16) Addition of UPS and Panel Boards Serving 1st and 2nd Floors Data Centers 9

14 APPENDIX B ELECTRICAL PLANS Addition of UPS and Panel Boards Serving 1st and 2nd Floors Data Centers 10

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