FPL Wye / Open Delta transformers and AT & T / Comcast service pedestals FPL three-phase transformer FPL feeder splice box Service handholes
5.3 Florida Power & Light
Overhead electric infrastructure layout and design is different in nature than underground electric infrastructure layout and design . The Town ’ s current overhead system can be generally described as a series of main overhead feeder lines with radial distribution lines that are connected to the feeder lines with fused switches . The feeder lines are interconnected to provide redundancy but generally the radial distribution lines are not interconnected . Conversely , an underground system will have interconnected feeder lines and distribution lines . This enhances reliability of the system as it provides multiple feed sources as opposed to a radial system that provides only one electric feed source .
In general , there is very little choice in the type of equipment that is installed when performing an underground conversion project . All of the equipment and materials that are installed are provided by FPL so that they are consistent with their electrical distribution standards . This is done in an effort to maintain system consistency and cost efficiency in both installation and maintenance . That being the case , there is one equipment aspect of the design where the municipality can make a preference decision . Two types of switch cabinets can be provided by FPL based on preference or circumstance ;
the standard switch cabinet or the “ vista ” switch cabinet . The standard switch cabinet is the cabinet that is deployed most commonly in the FPL electrical distribution system . The “ vista ” cabinet has a slightly smaller footprint , is shorter , and only requires eight feet of clearance on one side of the cabinet rather than two sides like the standard switch . This offers some unique advantages when the equipment is required to be placed in tight spaces or there is an aesthetic requirement that dictates the smaller cabinet . A significant drawback of the vista switch cabinet is that it costs approximately $ 58,000 more than a standard switch cabinet . For this reason , this master plan contemplates that 90 % of the switches to be installed will be standard style switch cabinets .
FPL will perform the electrical design for the program with Kimley-Horn developing the supplemental conduit plans to aid the Town ’ s contractor in installing the conduit for the project . FPL has communicated the following general guidelines related to the design of the improvements .
• yAll FPL electric infrastructure shall be designed and constructed in accordance with the FPL Distribution System Standards , latest edition . All electrical design decisions will ultimately be made and / or approved by FPL .
• yIn general , overhead electrical infrastructure located in rear easements will be relocated to a front street location .
• yThe Town is served by 12 separate main feeders that serve specific areas of Town based on electrical load and capacity of the main feeder . Main feeders will not be replaced or upgraded so service areas within the Town will remain the same .
• yAll electrical equipment and materials to be owned and maintained by FPL at the conclusion of the project shall be provided by FPL .
Single phase transformers and AT & T / Comcast service pedestals
• yContractors installing FPL infrastructure must be preapproved by FPL .
• ySwitch cabinets will be required at each of the 12 main feeder landing points in Town . Switch cabinets will also be required to separate underground distribution transformer loops . To the extent practical , standard switch cabinets are to be used . Vista style switch cabinets can be used as circumstances may require .
Town-Wide TOWN-WIDE UNDERGROUNDING OF of UTILITIES Utilities PROGRAM Program
MASTER PLAN DOCUMENT
Document
DESIGN CRITERIA AND CONCEPTUAL DESIGN DATA DESCRIPTION COLLECTION | 37