The document provides an overview of electrical circuit components, emphasizing the roles of hot, neutral, and ground wires in power supply and safety. It outlines essential electrical concepts including ampacity considerations, circuit definitions, and types of circuits such as dedicated and isolated ground circuits. Additionally, it discusses planning electrical layouts and the importance of adhering to specific loading rules to prevent overloading and ensure proper functionality.

1. Electrical & DataSystem

2. Parts of an Electrical CircuitHot Wires supply power to the device.Neutral Wires carry unused power back to the power source.Ground Wires carry excess dangerous power out of the system to the building ground and into the earth.

3. Electrical CircuitA circuit equals a complete path of electrical current.HOTNEUTRALGROUND

4. Key TermsAmps = Amount of water (Current)Volts = Amount of pushing force (Pressure)

5. The Building ServiceCircuit BreakerLINE 1 2 3NeutralGroundThree-Phase Power

6. 20 Amp Circuit Loading Rules Continuously loaded circuits (3 hours or more) must be downrated by 20% …allowing 16 amps per circuit.Kimball Office suggests approximately 10 amps or 10 receptacles to leave room for future growth and changes.

7. AmpsCalculator .15Task Light (4’) .65PC (avg.) 1-5Copier 15Fax Machine 1Radio .21Space Heater 12.5Typical Equipment Amperages *Amperage always displayed on equipment.

8. Planning ElectricalStandard 20 Amp rated circuitsNEC rule…20 Amps X 80% = 16 AmpsTally Up Amps NeededTotal amps for planned equipment

9. Total amps per staiton, and cluster (also consider # of receptacles)

10. Harmonics Overloading…the overloading and overheating of neutral wires causing electrical malfunction by…sharing neutral wires in circuits.

11. Circuit Definitions (per BIFMA)Designated Circuit, a single hot line that can share a ground and neutral with other circuits, designated by user for specific equipment use.Dedicated Circuit, a separate hot, neutral and ground that is dedicated to power a specific type or equipment.Isolated Ground Circuit, a dedicated circuit that has a ground that is electrically and mechanically separated from all other circuits.

12. Customer issuesFor true isolation, the building must have an isolation transformer. This is extremely costly and rare.Most reference to isolated ground is for a separate ground wire back to the main.

13. 8 Wires...4 Circuits, 3+1H1H2H3N1GH4N2IG3 circuits1 circuitSEPARATE NEUTRALSEPARATE GROUNDThe leading 4-circuit system with oversized neutrals.

14. 8 Wires...4 Circuits, 2+2H1H2N1GH3H4N2IG2 circuits2 circuits4 circuits with 2 hots sharing oversized neutrals

15. 10 Wires...4 Circuits, 2+2H1N1H2N2GH3N3H4N4IG2 circuits2 circuitsOptional 4 circuit system with separate neutrals

16. 10 Wires...6 Circuits, 3+3H1H2H3N1GH3N4H5N2IG3 circuits3 circuitsOptional 6 circuit system with shared oversized neutrals

17. 6 Wires…3 CircuitH1H2N1GH3N22 circuits1 circuitSEPARATE NEUTRALMost Popular Interworks Electrical System(Shared Ground)

18. 4 Wires…1 CircuitH1N1IGGUnique Interworks circuit with isolated & standard safety ground

19. Power and Data Project Strategy MeetingGoal: Finalize the order for electrical itemsParticipants:Dealer representative (Installation Supervisor)

20. Client representative (Facilities Manager, IT Representative, etc.)

21. Contractor/construction representative

22. Electrical Contractor representative

23. Telecommunications Cabling Contractor Representative