Technical Assignment Two

Existing Electrical Conditions

Prepared by: Brian Franco

Brian Franco Lighting Electrical Option Dover Downs Hotel and Conference Center, Dover, DE Faculty Consultant: Dr. Mistrick

Electrical Existing Conditions Report Executive Summary

This report analyzes the existing electrical conditions of Dover Downs Hotel and Conference Center. Due to the size of the building the focus in the report is primarily on the hotel power distribution system. The overall system also is responsible for providing power to the grandstands, the slot areas, the site, and additional administrative offices that are not included on the hotel single line diagram. Loads were totaled for the receptacles, lighting, mechanical equipment, and special kitchen equipment by using the NEC building design load calculations. Included in the report are summaries of the system type, transformer configuration, emergency power systems, overcurrent protection, location of key elements, and important design requirements. Circuit boards and main feeders were checked and all systems proved to be oversized. This is for spare room and safety, and in the case of the hotel tower there is twice the required room to allow for Phase 5 of construction which will double the number of hotel rooms. Also included in the report are single line diagrams and information on the utility rate structure.

System Type and Utility Service The electrical system providing the power for Dover Downs Hotel and Conference Center is secondary selective, able to draw power from two separate substations. When Dover Downs began construction on the new addition in 2000 they built a new substation for the City of Dover. Both the new and old substations are owned and operated by the City of Dover. There are four outdoor, delta-wye, pad-mounted transformers, supplied by the owner, that step the voltage down from the incoming 12.47KV to 480/277V. The following report on the existing electrical conditions focuses mainly on the section of the electrical system that serves the hotel and the performance hall. After the voltage is stepped down in the 12.47KV switchgear it serves a 4000A, 400V feeder bus that serves the main distribution panel for the hotel. The panels served by the main distribution panel are listed below with their sizes and purpose. The first two listed below are connected to the main distribution panel by a 2000A, 480V plug in bus duct. The rest are directly connected to the main distribution panel.

• (8) 110A panels serving the individual floors of the Hotel Tower • (3) 225A panels serving mechanical loads and the Penthouse • 1200A panel serving the Performance Hall panels • 1000A panel serving the panels for the 1st and 2nd floor spaces of the hotel • 600A panel serving the normal/emergency panel for all spaces of the hotel

All lighting and receptacle loads are served from 225A panels, throughout the hotel. The voltage for these is stepped down in 75KVA, 480V delta, 208/120V wye dry-type transformers. Some mechanical equipment operates at 480V and some must be stepped down to 208/120V. All elevators operate at 480V. Emergency Power The emergency power is supplied by a 2000KW diesel fuel indoor generator. The generator is located in the Central Plant and supplies power to a main 4000A, 480/277V emergency distribution panel with a 3200A, 3P circuit breaker for overcurrent protection. The main panel then serves several locations throughout the hotel which are listed below with their respective circuit breakers.

• (3) 400A, 3P spares • (2) 250A, 3P to Grandstands • (2) 200A, 3P to Slots • 100A, 3P to Hotel 1st and 2nd Floors • 400A, 3P to Central Plant • 600A, 3P to Hotel Emergency

Hotel Emergency Power The emergency power for the hotel is activated by a 480V, 600A automatic transfer switch. This switches the power supply for the main normal/emergency distribution panel from the main power to the generator power. The normal/emergency panel is located within the Central Plant and serves the 1st and 2nd floors, including the Performance Hall, as well as the Hotel Tower. The panels served from the main panel are primarily used for emergency equipment and lighting. There are also several passenger and service elevators and exhaust fans powered from the main panel. Overcurrent Protection The electrical system uses fused and non-fused safety switches and circuit breakers to protect from overcurrent. The main distribution panel for the hotel is protected by a 4000A circuit breaker. There are safety switches on feeder lines from the main emergency distribution panels. 480V safety switches are to be NEMA-1 heavy duty, while 240 or 120V switches are to be NEMA-1 general purpose. The sizes of each individual circuit breaker are shown on the single line diagram. Location of Equipment The main distribution panel for the hotel is located in the Central Plant which is on the first floor on the back (east) side of the hotel. The 2000A, 480V bus duct serving the hotel tower runs from the 2nd floor to the Penthouse with its origins in the Central Plant. The panels for each floor are located in the electric room for that floor. The main distribution panel for the 1st and 2nd floor is located on the second floor and smaller panels are located in electric rooms, service corridors, and storage closets throughout the space. The layout is setup so that the panelboards are placed close to their respective loads. The normal/emergency panel is located in the Central Plant. The emergency bus duct for the Hotel Tower runs from the Central Plant to the Penthouse. There are emergency panels in the electric rooms of the 4th, 7th, and 10th floors serving the entire Hotel Tower. Power Factor Correction There are no capacitors provided for power factor correction. Important Design Requirements It is important that in the case of a power failure from the substation that serves Dover Downs there is backup power for some amount of lighting, mechanical, and elevator loads. This is important because Dover Downs constantly has guests that could be anywhere throughout the hotel who must be able to safely maneuver through the hotel, especially in the case of an emergency which requires evacuation. This is covered by the diesel generator.

Since Dover Downs is not only a hotel, but a casino and race track, it is important for certain computer data systems, security systems, and telephones to have uninterruptible power supplies for security reasons. In normal conditions these systems are supplied power by the hotel’s main distribution panel. In the case of a failure of the main system an automatic transfer switch changes the supply to the diesel generator. If the diesel generator were to fail there is a charged battery that will support 100% of the load for ten minutes. Lighting The lighting in the hotel section of Dover Downs is mostly incandescent. There are (3) different fluorescent fixtures for the administrative spaces which all run on electronic ballasts with a class “A” sound rating or better. There is a good amount of decorative lighting in the hotel, but most of it is provided by the owner and therefore these lamps were not included in the table below. All the lighting operates at 120V with the exception of the Q50MR16 which has its own transformer to step down to 12V. The lighting load for the hotel including the performance hall was determined using table 220.3(A) from the NEC as shown in the table below.

Main Lamps Used

LAMP TYPE LAMP WATTS BALLAST BALLAST

FACTOR POWER FACTOR

INPUT WATTS

OPERATING VOLTAGE

CURRENT (A)

(3) FLUOR. F32/T8/SP30 32 ELECTRONIC 0.81 0.98 82 120V AC 0.69

(2) FLUOR. F32/T8/SP30 32 ELECTRONIC 0.87 0.98 59 120V AC 0.49

(2) FLUOR. F13/BX/35 13 ELECTRONIC 0.95 0.98 28 120V AC 0.05INCAN. Q50MR16/NFL 50 N/A N/A N/A 50 120/12V AC 0.24INCAN. 75A/HAL 75 N/A N/A N/A 75 120V AC 1.6INCAN. 250PAR38/FL 250 N/A N/A N/A 250 120V AC 0.48INCAN. 90PAR38/FL 90 N/A N/A N/A 90 120V AC 1.33INCAN. 250PAR38/SP 250 N/A N/A N/A 250 120V AC 0.48INCAN. 75PAR30/FL 75 N/A N/A N/A 75 120V AC 1.6INCAN. 90PAR38/FL 120 N/A N/A N/A 120 120V AC 1INCAN. 75PAR30/WFL 75 N/A N/A N/A 75 120V AC 1.6INCAN. 90A/HAL 90 N/A N/A N/A 90 120V AC 1.33

** Listed below are the mechanical loads and elevator loads on the hotel single line diagram and the equipment loads for each of the three kitchens.

NEC Lighting Load by Occupancy

SPACE FT2 TYPE OF OCCUPANCY

VOLT-AMPERES PER FT2

TOTAL VA

HOTEL TOWER 166,250 HOTEL 2 332,5041ST FLOOR 56,700 HOTEL 2 113,4662ND FLOOR 36,700 HOTEL 2 73,354PERFORMANCE HALL 37,900 ASSEMBLY HALLS 1 37,900

TOTAL KVA 557.2

RECEPTCALE LOAD LOCATION NUMBER OF

RECEPTACLES KVA

First Floor - General 261 46.98 Second Floor - General 154 27.72 3rd - 10th Floor Typical 1952 351.36 Penthouse and Roof 34 6.12 Kitchens 35 6.3 Electric/Telecom. Rms. 78 14.04 TOTAL 2514 452.52

With Demand Factor 231.26

248 FAN COIL UNIT FC-H-1 TOWER GUEST ROOMS 1/30 85 115 4.4 125.491 FAN COIL UNIT FC-H-10 ATRIUM 900 115 0.902 FAN COIL UNIT FC-H-4 MEZZANINE 1/15 135 115 4.4 1.011 FAN COIL UNIT FC-H - 7 ELECTRIC ROOM 1/6 305 115 4.4 0.512 CABINET UNIT HEATER CUH-H-2 ENTRANCE 1/10 115 4.4 1.011 PUMP FP-H-1 AHU-H-1 1/4 120 5.8 0.701 PUMP FP-H-1 AHU-H-1 1/4 120 5.8 0.701 EXHAUST FAN EF-H-23 POOL ROOM 1/4 120 5.8 0.702 EXHAUST FAN EF-H-1 HOTEL TOWER ROOF 1/3 115 7.2 1.662 EXHAUST FAN EF-H-6 HOTEL TOWER ROOF 1/3 115 7.2 1.664 EXHAUST FAN EF-H-7 HOTEL TOWER ROOF 1/4 115 5.8 2.671 EXHAUST FAN EF-H-2 HOTEL TOWER ROOF 1/3 115 7.2 0.831 EXHAUST FAN EF-H-16 HOTEL TOWER ROOF 1/4 115 5.8 0.671 EXHAUST FAN EF-H-22 PERFORMANCE ROOF 1/4 120 5.8 0.701 EXHAUST FAN EF-H-5 HOTEL TOWER ROOF 1/4 115 5.8 0.678 FREEZE PUMPS FP-H-14-19,2,6 VARIOUS AHU'S 1/4 120 5.8 5.572 SMOKE EXHAUST FAN SEF-H-5 STAIR TOWER ROOF 1/4 115 5.8 1.33

146.75

Electrical Loads - Mechanical Equipment (1 PHASE)HP W VOLTS AMPS DEMAND

KVA

TOTAL KVA

QTY. EQUIPMENT NAME LOCATION (OR AREA SERVED)

1 COOLING TOWER CT-1 60 36 KW 480 77 64.021 COOLING TOWER CT-2 30 36 KW 480 40 33.261 AIR HANDLING UNIT AHU-H-8 ENTRANCE/LOBBY 15 480 21 17.461 AIR HANDLING UNIT AHU-H-1 BUFFET KITCHEN 30 480 40 33.261 AIR HANDLING UNIT AHU-H-2 RESTAURANT 47 1/2 480 63 52.384 AIR HANDLING UNIT AHU-H-14-16,18 HOTEL TOWER ROOF 5 480 7.6 25.271 AIR HANDLING UNIT AHU-H-17 HOTEL TOWER ROOF 7 1/2 480 11 9.151 AIR HANDLING UNIT AHU-H-19 POOL MECH. ROOM 20 480 27 22.452 AIR HANDLING UNIT AHU-H-20,21 POOL MECH. ROOM 1 1/2 480 3 4.991 EXHAUST FAN KEF-G-1 BUFFET KITCHEN ROOF 1 305 208 4.6 1.661 EXHAUST FAN KEF-H-2 BUFFET KITCHEN ROOF 1 1/2 480 3 2.492 EXHAUST FAN KEF-H-3,4 BUFFET KITCHEN ROOF 5 480 7.6 12.641 EXHAUST FAN KEF-H-5 BUFFET KITCHEN ROOF 7 1/2 480 11 9.151 EXHAUST FAN EF-G-3 BUFFET KITCHEN ROOF 1 480 2.1 1.752 EXHAUST FAN KEF-H-8 HOTEL TOWER ROOF 1 480 2.1 3.491 EXHAUST FAN EF-H-3 HOTEL TOWER ROOF 3/4 480 1.6 1.331 EXHAUST FAN EF-H-4 HOTEL TOWER ROOF 1/3 480 1.1 0.917 EXHAUST FAN EF-H-9 HOTEL TOWER ROOF 1/2 480 1.1 6.401 EXHAUST FAN EF-H-16 HOTEL TOWER ROOF 1/2 480 1.1 0.911 EXHAUST FAN KEF-H-9 HOTEL TOWER ROOF 2 480 3.4 2.832 EXHAUST FAN KEF-H-10 HOTEL TOWER ROOF 7 1/2 480 11 18.292 STAIR PRESSURE FAN SPF-H-1,2 HOTEL TOWER ROOF 3 480 4.8 7.981 AIR CONDITIONING UNIT RTU-H-21 HOTEL LOBBY 6 480 9.4 7.821 TRANSFER FAN EF-H-21 HOTEL RESTAURANT 1 1/2 480 3 2.49

342.36

QTY. EQUIPMENT NAME LOCATION (OR AREA SERVED) HP W VOLTS DEMAND

KVA

TOTAL KVA

AMPS

Electrical Loads - Mechanical Equipment (3 PHASE)

QTY. EQUIPMENT NAME F.L. AMPS KW HP VOLTS PHASE TOTAL LOAD (DEMAND KVA)

2 COFFEE WARMER 1.7 0.2 120 1 0.412 COFFEE WARMER 1.7 0.2 120 1 0.411 DISHWASHER, RACK CONVEYOR 24 480 3 19.951 BOOSTER HEATER 40 480 3 33.261 GARBAGE DISPOSAL 16 120 1 1.921 FLOOR MIXER 14 120 1 1.681 SLICER, FOOD 5 1/4 120 1 0.601 CHEF'S COUNTER 50 120/208 1 10.401 WAITRESS COUNTER 20 120 1 2.401 REFRIGERATOR, 1-SECTION 12 1/3 120 1 1.441 REFRIGERATOR, 1-SECTION 12 1/3 120 1 1.441 REFRIGERATOR, 1-SECTION 12 1/3 120 1 1.441 OVEN, CONVECTION GAS 6 1/3 120 1 0.721 OVEN, CONVECTION 6 120 1 0.722 STEAM JACKETED KETTLE 10 120 1 2.401 TITLTING SKILLET 3 120 1 0.361 GRIDDLE, GAS 1 120 1 0.121 FRYER, DEEP FAT 9 120 1 1.081 SC ARCTIC FIRE 8.2 120 1 0.981 ICE CREAM STORAGE 5.7 120 1 0.681 BLAST CHILLER 10 208 3 3.604 GLASS DOOR MERCHANDISER 15 120 1 7.201 GLASS DOOR MERCHANDISER 15 120 1 1.801 JUICE DISPENSER 5 0.5 120 1 0.601 REFRIGERATOR, 2-SECTION 9 1/3 120 1 1.082 FRYER, DEEP FAT 1 120 1 0.241 CONVECTION STEAMER 5 120 1 0.602 ANSUL PANEL 20 120 1 4.801 EXHAUST HOOD LIGHTS 4 120 1 0.481 EXHAUST HOOD LIGHTS 4 120 1 0.481 CHEF'S COUNTER 200 208/120 3 72.051 WAITRESS STATION 50 208/120 1 10.402 ICED TEA BREWER 15 1.78 120 1 3.601 COFFEE BREWING SYSTEM 29 208 1 6.031 PID PANEL 20 120 1 2.401 PID PANEL 20 120 1 2.401 CUBER, 1800 # WC 17 208 1 3.541 ICE MAKER 8.5 3/4 208-230 1 1.951 TOASTER 11.7 2.8 120/208 1 2.431 CONVEYOR FOOD TOASTER 13 120 1 1.561 COFFEE URN 45 120 1 5.401 SALAD TOP REFRIGERATOR 6.5 120 1 0.781 DRYER, KITCHENWARE 4.3 120 1 0.521 WALK IN LIGHTS 4 120 1 0.481 WALK IN LIGHTS 4 120 1 0.481 EVAPORATOR COIL 4.2 120 1 0.501 EVAPORATOR COIL 10.9 208 1 2.271 GLASS CHILLER 6.6 120 1 0.791 CPE WATERWASH PANEL 20 120 1 2.401 EXPRESSO MACHINE 18 120/208 1 3.742 POS TERMINAL 15 120 1 3.602 POS TERMINAL 15 120 1 3.602 POS TERMINAL 15 120 1 3.601 6 BURNER RANGE 3.4 120 1 0.411 BOTTLE COOLER 6 120 1 0.724 HEAT LAMP 6.3 120 1 3.024 ORDER PRINTER 1.5 120 1 0.722 HOT MIX DISPENSER 15 120 1 3.601 COFFEE GRINDER 9.4 120 1 1.13

247.42

Electrical Loads - Main Kitchen Equipment

TOTAL KVA

QTY. EQUIPMENT NAME F.L. AMPS KW HP VOLTS PHASE TOTAL LOAD (DEMAND KVA)

1 CONDENSATE HOOD 4 120 1 0.481 POT WASHER 10 480 3 8.311 POT WASHER 15 120 1 1.801 POT WASHER 32 480 3 26.601 CONVECTION STEAMER 5 120 1 0.601 TILTING SKILLET 3 208 1 0.621 EXHAUST CANOPY 4 120 1 0.481 ANSUL PANEL 20 120 1 2.402 OVEN, CONVECTION GAS 12 1/3 120 1 2.881 EXHAUST CANOPY 4 120 1 0.481 FRYER BANK, DEEP FAT 2 120 1 0.241 FRYER BANK, DEEP FAT 1 120 1 0.121 FRYER BANK, DEEP FAT 9 120 1 1.081 PRESSURE FRYER 10 120 1 1.201 ANSUL PANEL 20 120 1 2.401 FLOOR MIXER 14 3/4 120 1 1.681 WORK TABLE W/ SINK 50 208/120 3 18.011 FOOD PROCESSOR 2.6 1 208 3 0.941 SLICER, COMPACT 2.5 120 1 0.301 PID PANEL 20 120 1 2.401 WALK IN BOX, COOLER 4 120 1 0.481 EVAPORATOR COIL 2.1 120 1 0.251 PID PANEL 20 120 1 2.401 WASTE PULPER/EXTRACTOR 13 120 3 2.701 WASTE PULPER/EXTRACTOR 13 120 3 2.701 HEATED HOLDING CABINET 16 2 120 1 1.921 HEATED HOLDING CABINET 16 2 120 1 1.923 POS TERMINAL 15 120 1 5.401 BOTTLE COOLER 7 1/3 120 1 0.841 WALK IN BOX, COMBO 8 120 1 0.961 EVAPORATOR COIL 6.3 120 1 0.761 EVAPORATOR COIL 16.3 208 1 3.391 WATER BATH STEAM TABLE 19.2 208 1 3.991 STEAM JACKETED KETTLE 34.2 480 1 16.422 MOBILE WARM HOLDING CAB. 16.6 120 1 3.981 REFRIGERATOR, 1 - SECTION 10 120 1 1.201 SOILED TRAY WAREWASHING 15 120/208 3 5.401 DISH/GLASS WASHER 74 480 3 61.521 DISH/GLASS WASHER 55 480 3 45.731 DISH WASHER CONVEYED 85 480 3 70.671 DISH WASHER CONVEYED 33 480 3 27.441 CONDENSER RACK 40 480 3 33.262 DRYER, KITCHENWARE 4.3 120 3 1.792 DRYER, KITCHENWARE 4.3 120 1 1.031 ICE CUBER 17.4 208 1 3.621 STEAM KETTLE 10 480 1 4.801 PRINTER 5 120 1 0.601 GARBAGE DISPOSAL 6 120 3 1.25

379.44

Electrical Loads - Buffet Kitchen Equipment

TOTAL KVA

QTY. EQUIPMENT NAME F.L. AMPS KW HP VOLTS PHASE TOTAL LOAD (DEMAND KVA)

1 GAS FRYER 1 120 1 0.121 GAS FRYER 1 120 1 0.121 GAS FRYER 9 120 3 1.871 OVEN, CONVECTION, ROLL IN 6 1/3 120 3 1.251 OVEN, CONVECTION, ROLL IN 6 1/3 120 1 0.721 SLICER, COMPACT 5.5 120 1 0.661 CONVECTION STEAMER 5 120 1 0.601 TILTING SKILLET 3 120 1 0.361 FLOOR MIXER 14 120 1 1.681 ANSUL PANEL 20 120 1 2.401 FOOD PROCESSOR 2.9 208 1 0.601 WARMING CABINET 13 120 1 1.561 BANQUET CABINET 9 120 1 1.081 BANQUET CABINET 9 120 1 1.081 BANQUET CABINET 9 120 1 1.082 HOT FOOD TABLE 50 120/208 1 20.801 PID PANEL 20 120 1 2.401 EXHAUST CANOPY 4 120 1 0.481 CPE WATERWASH PANEL 20 120 1 2.402 ICE CUBER 17.4 120 1 4.181 REFRIGERATOR, 2-SECTION 10 1/3 208 3 3.601 REFRIGERATOR, 2-SECTION 10 1/3 120 1 1.201 REFRIGERATOR, 2-SECTION 10 1/3 120 1 1.201 REFRIGERATOR, 2-SECTION 10 1/3 120 1 1.201 HEATED CABINET, 2-SECTION 14.4 3 120 1 1.732 COFFER URN 45 120 1 10.801 PULPER/EXTRACTOR CABINET 13 120 1 1.561 DISHWASHING SYSTEM 39 120 1 4.681 DISHWASHING SYSTEM 2 120 1 0.241 BOOSTER HEATER 40 120 1 4.801 WALK IN BOX COMBO 4 208/120 3 1.441 WALK IN BOX COMBO 4 208/120 1 0.832 ICED TEA BREWER 15 120 1 3.601 EVAPORATOR COIL 10.9 208 1 2.271 EVAPORATOR COIL 4.2 120 1 0.502 GLASSWASHER 15 120 1 3.601 HORIZONTAL COOLER 6.8 208 1 1.411 SC BACKBAR COOLER 4.9 208-230 1 1.131 CASH REGISTER 6 120/208 1 1.251 FREEZER ROLL IN 13 120 1 1.561 WINE DISPENSER 2.6 120 1 0.31

94.36

Electrical Loads - Banquet Pantry Kitchen

TOTAL KVA

Elevator Load There are seven elevators included in the load on the hotel main distribution panel. Six of them are on the emergency motor load panel and one is on the normal/emergency panel. They all have 200A, 3P fuses between the load and the panel. They also all operate at 480V. Elevator Load:

• normal/emergency panel: (1 elevator)*(200A)*(480V)*(1.0 NEC demand factor) Load = 96,000VA = 96KVA

• emergency motor load panel: (6 elevators)*(200A)*(480V)*(0.79 NEC demand factor) Load = 450,040VA = 455KVA

• Total Elevator Load = 551KVA These elevator loads are higher then they are in reality because the amps used were the amps for the elevator circuit breakers. Obviously the real ampacity would be lower. Sizing Panel and Feeder for Hotel Main Distribution Panel

• Capacity of Existing Hotel Power System = (4000A)*(480V)*(sq. rt. 3) = 3325.5 KVA

• The main distribution panel is sized appropriately and provides room for further loading.

• The main feeder from the 12.47KV switchgear is (11) 500 MCM. Assume copper, type THHN, temperature rating 90°C. o The ampacity is 4730A. This is sized appropriately because the circuit

breaker protecting it is rated at 4000A.

Total Load TYPE KVA

LIGHTING 557.2RECEPTACLE 231.3MECHANICAL 1 PHASE 146.8MECHANICAL 3 PHASE 342.4MAIN KITCHEN 247.4BUFFET KITCHEN 397.4PANTRY KITCHEN 94.4ELEVATORS 551

TOTAL KVA 2567.9

The above table sizes the feeders from the Hotel Main Distribution Panel to the four main panels connected to it. There is also a plug in bus duct served by the main distribution panel supplying power to the hotel tower and a bus duct going back to the central plant.

Feeder Sizing

SERVING CIRCUIT

BREAKER SIZE (A)

FEEDER FEEDER CAPACITY

MINIMUM OVERSIZE FACTOR

PERFORMANCE HALL 1,200 (4) 3#350MCM 1,400 1.16 MDP HOTEL PODIUM 1,000 (3) 3#500MCM 1,290 1.29 LOADING DOCK 125 3#2 130 1.04 EDP HOTEL 600 (2) 4#350MCM 700 1.16

CITY OF DOVER ELECTRIC UTILITY DOVER, DELAWARE

6/03/96

PRIMARY SERVICE CLASSIFICATION AVAILABILITY This rate is available throughout the City of Dover electric service area for commercial and industrial customers taking delivery at the primary voltage available, and where the transforming and protective apparatus is furnished, owned and maintained by the customer. CHARACTER OF SERVICE Primary voltage, 60 cycle, alternating current, three phase service. Summer Billing Months Winter Billing Months MONTHLY RATES June Through October November Through May Energy charge per KWH .045 .045 Demand charge per KW 8.00 5.30 DETERMINATION OF DEMAND The billing demand will be the maximum sixty (60) minute demand during the month, determined by a block demand meter. In any month in which the average power factor at the delivery point is greater or less than ninety percent (90%), the measured demand shall be corrected in accordance with the following formula: Billing Demand = Measured demand x .90

Average Power Factor The City measures both leading and lagging power factor, treating both as non-unity power factors and the customers are billed accordingly. MINIMUM MONTHLY BILL The minimum monthly bill shall be equal to the demand charge which shall be based on the greater of three hundred kilowatts (300 KW) or 60% of the greatest billing demand established during any month of the 12 month period ending with the current billing month. PURCHASE POWER CLAUSE All kilowatt hours billed under this rate shall be subject to the Purchase Power Clause approved by the Council of the City of Dover. PUBLIC UTILITY TAX In addition to the charges provided for in this service classification, a surcharge will apply in accordance with any tax imposed by governmental authority upon sales of electricity. RULES AND REGULATIONS The General Rules and Regulations of the City of Dover for electric service shall apply to service rendered under this service classification. If a customer who is on the Primary Service Classification wishes to switch to the Commercial and Industrial Service Classification, the customer may do so at the customer's choice. If such a change occurs, the City will determine on a case-by-case basis which portion, if any, of the customer-owned electrical equipment will be maintained by the City provided, however, that any equipment transferred to City ownership will be so transferred at no cost to the City.