Electrical Abstract -National Electrical Code (NEC)

ELECTRICAL ABSTRACT-NATIONAL ELECTRICAL CODE-NEC

Capacitor Bank for Power Supply Voltage System Voltage Minimum rating of capacitor bank 3.3 KV , 6.6KV 75 Kvar 11 KV 200 Kvar 22 KV 400 Kvar 33 KV 600 Kvar

Capacities of PVC conduits Nominal conductor Size mm 16 mm 20 mm 25 mm 32 mm Number of Cables (maximum) 1.0 6 5 19 30 1.5 5 4 15 24 2.5 3 3 11 17 4 2 2 8 13 6 2 – 6 10 10 – – 4 6 16 – – 3 4 25 – – 2 3 35 – – – 2

System Highest and Lower Voltage Ref: NEC(India) :2011 System Voltage Highest Voltage Lowest Voltage 240 V 264 V 216 V 415 V 457 V 374 V 3.3 kV 3.6 kV 3.0 kV 6.6 kV 7.2 kV 6.0 kV 11 kV 12 kV 10 kV 22 kV 24 kV 20 kV 33 kV 36 kV 30 kV 66 kV 72.5 kV 60 kV 66 kV 72.5 kV 60 kV 132 kV 145 kV 120 kV 220 kV 245 kV 200 kV 400 kV 420 kV 380 kV

Number of Points for Dwelling Unit Ref: NEC(India) :2011 No. Description Area for the Main Dwelling Unit (m2) 35 mm2 45 mm2 55 mm2 85 mm2 140 mm2 1 Light points 7 No 8 No 10 No 12 No 17 No 2 Ceiling fans Pont 2 No 3 No 4 No 5 No 7 No 3 Ceiling fans No’s 2 No 2 No 3 No 4 No 5 No 4 6A Socket outlets 2 No 3 No 4No 5 No 7 No 5 16A Socket outlets – 1 No 2 No 3 No 4No 6 Call-bell (buzzer) – – 1 No 1 No 1 No

Recommended Schedule of Socket-Outlets Ref: NEC(India) :2011 Description Number of Socket 6A Socket 16A Socket Bedroom 2 1 Living room 2 2 Kitchen 1 2 Dining room 2 1 Garage 1 1 For refrigerator – 1 For air-conditioner – 1 for each Verandah 1 per 10mter2 1 Bathroom 1 1

Power requirements of the building Ref: NEC(India) :2011 Part of ElectricalInstallation Part of the Total Power Requirement in % DiversityFactor Ventilation, heating (air-conditioning) 45% 1.0 Power plant (drives) 52% 0.65 Lighting 30% 0.95 Lifts 20% 1.0 Kitchen 10% 0.6 Laundry 5% 0.6

Lift Car Speed Ref: NEC(India) :2011 Occupancy No. of Floors Served Car Speed m/s Office building 4 to 5 0.5 to 0.75 m/sec Office building 6 to 12 0.75 to 1.5 m/sec Shops and departmental stores 13 to 20 More than 1.5 m/sec Passenger lifts for low and medium lodging houses – 0.5 m/sec Hotels 4 to 5 0.5 to 0.75 m/sec Normal load carrying lifts – 2.0 to 2.5 m/sec Hospital passenger Lift 4 to 5 0.5 to 0.75 m/sec Hospital passenger Lift 13 to 20 More than 1.5 m/sec Hospital bed lifts (Short travel lifts insmall hospitals) – 0.25 m/sec Hospital bed lifts (Normal) – 0.5 m/sec Hospital bed lifts (Long travel lifts inGeneral hospitals) 0.6 to 1.5 m/sec

Capacitor Ratings at Rated Voltage Ref: NEC(India) :2011 Motor Rating(Kw) Capacitor Rating in kVAR for Motor Speed 3 000rev/min 1 500rev/min 1 000rev/min 750rev/min 600rev/min 500rev/min 2.25 1 1 1.5 2 2.5 2.5 3.7 2 2 2.5 3.5 4 4 5.7 2 3 3.5 4.5 5 5.5 7.5 3 4 4.5 5.5 6 6.5 11.2 4 5 6 7.5 8.5 9 15 5 6 7 9 11 12 18.7 6 7 9 10.5 13 14.5 22.5 7 8 10 12 15 17 37 11 12.5 16 18 23 25 57 16 17 21 23 29 32 75 21 23 26 28 35 40 102 31 33 36 38 45 55 150 40 42 45 47 60 67 187 46 50 53 55 68 76

:Maximum Current Demand for Motor: Ref: NEC(India) :2011 Nature of supply Size of installation Maximum current demand Single phaseor Three phase Up to and including 0.75 kW Six times the full load current Above 0.75 kW and up to 7.5 kW Three times the full load current Above 7.5 kW up to and up to11 kW Two times the full load current Above 11 kW One and half times the full load current

Rated Basic Insulation Level (BIL) Ref: NEC(India) :2011 Nominal System Voltage (kV) Rated BIL (kVp) 33 KV 170 22 KV 125 11 KV 75 6.6 KV 60 3.3 KV 40

Illumination Level Ref: NEC(India) :2011 Location Illumination Level (Lux) Residence Entrance / Hallways 100 Living room 300 Dining Room 150 Bed Room (General) 300 Bed Room (Dressing , Bed Heads) 200 Kitchen 200 Kitchen sink 300 Bathroom 100 Sewing 700 Workshop 200 Staircase 100 Garage 70 Study Room 300 Office Building Entrance hall / Reception 150 Conference Room / Executive Office 300 General Office Space 300 Business Machinery Operation 450 Drawing Office 450 Corridors 70 Stairs 100 Lift landing 150 Hospital Building Reception & Waiting 150 General ward 100 Bed Side 150 Toilet 70 Stairs 100 Operation Theatre (General) 300 Operation Theatre (Operation Table) Special Laboratories 300 Radiology 100 Causality 150 Dispensaries 300 Laundry 200 Dry Cleaning 200 Ironing 300 General Office 450 Kitchen 200 Assembly & Concert Halls Foyers 100 to 150 Auditoria 100 to 150 Platform 450 Corridors 70 Stairs 100 Cinema Halls Foyers 150 Auditoria 50 Corridors 70 Stairs 100 Theatres Foyers 150 Auditoria 70 Corridors 70 Stairs 100 School / College Building Assembly Halls General 150 Examination center 300 Platform 300 Classes Desktop 300 Blackboard 200 to 300 Libraries Shelves 70 to 150 Reading Room 150 to 300 Reading Table 300 to 700 Cataloguing 150 to 300 General Office 300 Staff Room 150 Corridors 70 Stairs 100

Lamp’s Lumen Data Rating (Watt) Life (Hours) Initial Lumens Incandescent Lamp 60 1000 870 100 750 1750 150 2000 1740 200 2000 2300 500 2000 6500 Fluorescent Lamp 18 7000 1120…