🦷 Dental Clinic

Electrical Project 8

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Electrical Project 8


Specifications

The project deals with a two-story building, located at Av. Joca brandão, 715, downtown, Itajaí-SC. The building will have as possible use, medical offices, commercial office and/or dental offices. In this way, the electrical project was dimensioned in order to meet the needs for all types of uses.

▶ The project was based on the following standards:
  • ABNT NBR 5410: Low Voltage Electrical Installations, Mar/2008;
  • NBR 13534: Electrical Installations in Health Care Establishments;
  • ARCHITECTURAL PROGRAMMING OF FUNCTIONAL HEALTH UNITS;
  • RESOLUTION-RDC No. 50- ANVISA.
▶ Ground floor:
  • Circuit 1 - Air conditioning - Office 1, power of 40W, 2.5mm wiring, and 15A breaker (according to supplier)
  • Circuit 2 - Lighting - Office 1, power of 120W, 1.5mm wiring, and 10A breaker
  • Circuit 3 - Outlets - Office 1, power of 1700W, 2.5mm wiring, and 15A breaker
  • Circuit 4 - Electric Faucet - Office 1, power of 5500W, 10.0mm wiring, and 30A breaker (according to supplier)
  • Circuit 5 - TUE - Dental Chair 1 - total power of 600W, 2.5mm wiring, and 10A breaker
  • Circuit 6 - Air conditioning - Office 2, power of 40W, 2.5mm wiring, and 15A breaker (according to supplier)
  • Circuit 7 - Lighting - Office 2, power of 120W, 1.5mm wiring, and 10A breaker
  • Circuit 8 - Outlets - Office 2, power of 2200W, 2.5mm wiring, and 15A breaker
  • Circuit 9 - Electric Faucet - Office 2, power of 5500W, 10.0mm wiring, and 30A breaker (according to supplier)
  • Circuit 10 - TUE - Dental Chair 2 - total power of 600W, 2.5mm wiring, and 10A breaker
  • Circuit 11 - Air conditioning - Administration, power of 40W, 2.5mm wiring, and 15A breaker (according to supplier)
  • Circuit 12 - Lighting - Administration, power of 200W, 1.5mm wiring, and 10A breaker
  • Circuit 13 - Outlets 1 - Administration; total power of 1700W, 2.5mm wiring, and 15A breaker
  • Circuit 14 - Outlets 2 - Administration; total power of 1800W, 2.5mm wiring, and 15A breaker
  • Circuit 15 - Air conditioning - Pantry, power of 40W, 2.5mm wiring, and 15A breaker (according to supplier)
  • Circuit 16 - Lighting - Pantry, power of 400W, 1.5mm wiring, and 10A breaker
  • Circuit 17 - Outlets - Pantry/IS01, power of 1000W, 2.5mm wiring, and 15A breaker
  • Circuit 18 - Outlets - MICROWAVE, power of 2400W, 4.0mm wiring, and 25A breaker
  • Circuit 19 - Lighting - IT, IS PCD, IS02, EXIT RECEPTION; total power of 880W, 1.5mm wiring, and 10A breaker
  • Circuit 20 - Outlets - IT, IS PCD, IS02, EXIT RECEPTION; total power of 1500W, 2.5mm wiring, and 15A breaker
  • Circuit 21 - Air conditioning - IT, power of 40W, 2.5mm wiring, and 15A breaker (according to supplier)
  • Circuit 22 - Lighting - HALL/CIRC.; total power of 920W, 1.5mm wiring, and 10A breaker
  • Circuit 23 - Outlets - HALL/CIRC.; total power of 1000W, 2.5mm wiring, and 15A breaker
  • Circuit 24 - Air conditioning - HALL/CIRC., power of 63W, 2.5mm wiring, and 16A breaker (according to supplier)
  • Circuit 25 - Lighting - RECEPTION.; total power of 880W, 1.5mm wiring, and 10A breaker
  • Circuit 26 - Outlets - RECEPTION.; total power of 2000W, 2.5mm wiring, and 15A breaker
  • Circuit 27 - Air conditioning - RECEPTION 1, power of 40W, 2.5mm wiring, and 15A breaker (according to supplier)
  • Circuit 28 - Air conditioning - RECEPTION 2, power of 40W, 2.5mm wiring, and 15A breaker (according to supplier)
  • Circuit 29 - Air conditioning - RECEPTION 3, power of 40W, 2.5mm wiring, and 15A breaker (according to supplier)
  • Circuit 30 - Lighting - EXTERNAL-FRONT.; total power of 1800W, 1.5mm wiring, and 10A breaker
  • Circuit 31 - Lighting - EXTERNAL-BACK.; total power of 2600W, 2.5mm wiring, and 15A breaker
  • Circuit 32 - Outlets - GATE/SECURITY/FONT.; total power of 300W, 2.5mm wiring, and 10A breaker
  • Circuit 33 - GATE MOTOR; total power of 1200W, 2.5mm wiring, and 15A breaker
  • Circuit 34 - ELEVATOR; total power of 3000W, 6.0mm wiring, and 40A three-phase breaker
  • Circuit 35 - Lighting - ELEVATOR.; total power of 320W, 1.5mm wiring, and 10A breaker
  • Circuit 36 - CONTROL PANEL - ELEVATOR.; total power of 6500W, 6.0mm wiring, and 40A three-phase breaker
  • Circuit 37 - Lighting - TOTEMS.; total power of 1200W, 2.5mm wiring, and 10A breaker
  • Circuit 38 - VACUUM SYSTEM-.; total power of 1200W, 2.5mm wiring, and 15A three-phase breaker
  • Circuit 39 - VACUUM COMPRESSION SYSTEM-.; total power of 4500W, 4.0mm wiring, and 25A three-phase breaker
  • Circuit 40 - LIGHTING/OUTLETS MACHINE ROOM-.; total power of 360W, 2.5mm wiring, and 10A breaker
  • Circuits 41, 42, 43, 44 - SPARES -.; total power of 2200W, wiring and breaker as needed
▶ Second floor:
  • Circuit 1
    Air conditioning – central reception 02; power of 63W, 2.5mm wiring, and 15A breaker (as per supplier);
  • Circuit 2
    Air conditioning – office 03; power of 40W, 2.5mm wiring, and 15A breaker (as per supplier);
  • Circuit 3
    Air conditioning – office 04; power of 40W, 2.5mm wiring, and 15A breaker (as per supplier);
  • Circuit 4
    Air conditioning – office 05; power of 40W, 2.5mm wiring, and 15A breaker (as per supplier);
  • Circuit 5
    Air conditioning – clean/dirty area; power of 40W, 2.5mm wiring, and 15A breaker (as per supplier);
  • Circuit 6
    Air conditioning – office 06; power of 40W, 2.5mm wiring, and 15A breaker (as per supplier);
  • Circuit 7
    Air conditioning – office 07; power of 40W, 2.5mm wiring, and 15A breaker (as per supplier);
  • Circuit 8
    Lighting – reception 02, stairs, circulation hall; 2 points of 60W and 10 points of 100W, total power of 1120W, 1.5mm wiring, and 10A breaker;
  • Circuit 9
    Lighting – office 03; 2 points of 100W, total power of 200W, 1.5mm wiring, and 10A breaker;
  • Circuit 10
    Lighting – office 04; 2 points of 100W, total power of 200W, 1.5mm wiring, and 10A breaker;
  • Circuit 11
    Lighting – office 05; 2 points of 100W, total power of 200W, 1.5mm wiring, and 10A breaker;
  • Circuit 12
    Lighting – office 06; 2 points of 100W, total power of 200W, 1.5mm wiring, and 10A breaker;
  • Circuit 13
    Lighting – office 07, IS 04, IS PCD; 4 points of 100W, total power of 400W, 1.5mm wiring, and 10A breaker;
  • Circuit 14
    Lighting – clean/dirty area, IS 03; 4 points of 100W, total power of 400W, 1.5mm wiring, and 10A breaker;
  • Circuit 15
    Lighting – balcony; 2 points of 100W, total power of 200W, 1.5mm wiring, and 10A breaker;
  • Circuit 16
    Lighting – water tanks; 2 points of 100W, total power of 200W, 1.5mm wiring, and 10A breaker;
  • Circuit 17
    Outlets – reception 02, stairs, hall/circulation; 21 points of 100W, total power of 2100W, 2.5mm wiring, and 15A breaker;
  • Circuit 18
    Outlets – office 03; 25 points of 100W, total power of 2500W, 2.5mm wiring, and 15A breaker;
  • Circuit 19
    Outlets – office 04; 29 points of 100W, total power of 2900W, 2.5mm wiring, and 15A breaker;
  • Circuit 20
    Outlets – office 05; 25 points of 100W, total power of 2500W, 2.5mm wiring, and 15A breaker;
  • Circuit 21
    Outlets – office 06; 17 points of 100W, total power of 1700W, 2.5mm wiring, and 15A breaker;
  • Circuit 22
    Outlets – office 06; 16 points of 100W, total power of 1600W, 2.5mm wiring, and 15A breaker;
  • Circuit 23
    Outlets – office 07, IS 04, IS PCD; 22 points of 100W, total power of 2200W, 2.5mm wiring, 15A breaker, and 15A residual current device (RCD);
  • Circuit 24
    Outlets – clean/dirty area; 17 points of 100W, total power of 1700W, 2.5mm wiring, and 15A breaker;
  • Circuit 25
    Outlets – clean/dirty area; 17 points of 100W, total power of 1700W, 2.5mm wiring, and 15A breaker;
  • Circuit 26
    Electric faucet – office 03; 1 point of 5500W, total power of 5500W, 10.0mm wiring, 30A breaker, and 30A residual current device (RCD) (as per supplier);
  • Circuit 27
    Electric faucet – office 04; 1 point of 5500W, total power of 5500W, 10.0mm wiring, 30A breaker, and 30A residual current device (RCD) (as per supplier);
  • Circuit 28
    Electric faucet – office 05; 1 point of 5500W, total power of 5500W, 10.0mm wiring, 30A breaker, and 30A residual current device (RCD) (as per supplier);
  • Circuit 29
    Electric faucet – office 06; 1 point of 5500W, total power of 5500W, 10.0mm wiring, 30A breaker, and 30A residual current device (RCD) (as per supplier);
  • Circuit 30
    Electric faucet – office 07; 1 point of 5500W, total power of 5500W, 10.0mm wiring, 30A breaker, and 30A residual current device (RCD) (as per supplier);
  • Circuit 31
    Autoclave – clean/dirty area; 1 point of 1700W, total power of 1700W, 2.5mm wiring, 15A breaker, and 15A residual current device (RCD) (as per supplier);
  • Circuit 32
    Autoclave – clean/dirty area; 1 point of 1700W, total power of 1700W, 2.5mm wiring, 15A breaker, and 15A residual current device (RCD) (as per supplier);
  • Circuit 33
    Mobile column X-ray – X-ray room; 2 points of 1200W, total power of 2400W, 4.0mm wiring, 16A breaker, and 16A residual current device (RCD) (as per supplier);
  • Circuit 34
    Dental chair – office 03; 1 point of 600W, total power of 600W, 2.5mm wiring, 10A breaker;
  • Circuit 35
    Dental chair – office 04; 1 point of 600W, total power of 600W, 2.5mm wiring, 10A breaker, and 10A residual current device (RCD) (as per supplier);
  • Circuit 36
    Dental chair – office 05; 1 point of 600W, total power of 600W, 2.5mm wiring, 10A breaker, and 10A residual current device (RCD) (as per supplier);
  • Circuit 37
    Dental chair – office 06; 1 point of 600W, total power of 600W, 2.5mm wiring, 10A breaker, and 10A residual current device (RCD) (as per supplier);
  • Circuit 38
    Dental chair – office 07; 1 point of 600W, total power of 600W, 2.5mm wiring, 10A breaker, and 10A residual current device (RCD) (as per supplier);
  • Circuit 39
    Condenser unit; 1 point of 16406W, total power of 16406W, 16mm wiring, and 50A breaker; voltage 380V;
  • Circuit 40
    Air extractor fan; 1 point of 34W, total power of 34W, 2.5mm wiring, and 15A breaker;
  • Circuits 41, 42, 43, 44
    Reserve circuits – each with a power of 2200W, wiring and breaker as needed.

Installed power

The calculation of the installed power takes into account the individual demand factor, as per the regulations. For lighting and socket circuits, a utilization factor of 0.45 was determined, meaning that it assumes a 45% simultaneous utilization of all points. For air conditioning circuits and specific sockets, a factor of 1 was considered, as they can operate at 100% capacity simultaneously. Thus, the installed power on the first floor is 41,953W, and the power on the second floor is 66,912W.

Main circuit breaker

Based on the projected installed power, the main circuit breakers for the first floor and second floor distribution boards were determined using Ohm’s law. The nominal current rating of the circuit breaker should be between the calculated current in the design and the maximum current limit of the adopted conductor. For the first floor, a three-phase, three-pole magnetic circuit breaker with a rating of 130A, curve C, was chosen. For the second floor, a three-phase, three-pole magnetic circuit breaker with a rating of 205A, curve C, was selected. To protect both floors, a circuit breaker with a rating of 225A, with the same specifications, was installed.