Access control basics-7
- 1. INSTALLATIONINSTALLATION SYSTEM INSTALLATION. Installation personnel will be supervised by persons who are qualified and experienced in the installation, inspection, and testing of electronic premises security systems. Qualified personnel will include, but not be limited to, the following: (1) Equipment manufacturer trained and certified personnel
- 2. INSTALLATIONINSTALLATION SYSTEM INSTALLATION. (2) Personnel licensed or certified by federal, state, or local authority (3) Personnel certified by an accreditation program acceptable to the AHJ (4) Trained and qualified personnel employed by an organization listed by a national testing laboratory for the servicing of electronic premises security systems
- 3. INSTALLATIONINSTALLATION POWER SUPPLIES Code Conformance. All power supplies will be installed in conformity with the requirements of NFPA 70, National Electrical Code, for such equipment and with the requirements indicated in this subsection. INSTALLATION Unless otherwise permitted by the manufacturer, control units, power supplies, and batteries will be mounted in the vertical, upright position.
- 4. INSTALLATIONINSTALLATION INSTALLATION Manual Resetting. All equipment requiring manual resetting to maintain normal operation will have an indication to the user that the device has not been restored to normal. Equipment Location. Equipment will be installed in locations where conditions do not exceed the voltage, temperature, and humidity limits specified below or unless listed for the application.
- 5. INSTALLATIONINSTALLATION INSTALLATION Voltage, Temperature, and Humidity Variation. Equipment shall be designed so that it is capable of performing its intended functions under the following conditions: (1) At 85 percent and at 110 percent of the nameplate primary (main) and secondary (standby) input voltage(s) (2) At ambient temperatures of 0°C (32°F) and 49°C (120°F) (3) At a relative humidity of 85 percent and an ambient temperature of 30°C (86°F)
- 6. INSTALLATIONINSTALLATION INSTALLATION Damp, Wet, or Exterior Environments. Equipment intended for use in damp, wet, or exterior environments shall be listed for its use. Interconnecting Control Units. Control units, sub-controls, and devices that are used to interconnect the control unit to protection devices will be located within the area being protected by the system.
- 7. INSTALLATIONINSTALLATION INSTALLATION Damp, Wet, or Exterior Environments cont. If the enclosures for such equipment are not located in such an area, the enclosures will be protected by one of the following methods: (1) Continuously under the notice of assigned security personnel (2) Located in an area that is accessible only to authorized personnel (3) Supervised to annunciate tampering Control units and sub-controls will be readily accessible to service personnel.
- 8. INSTALLATIONINSTALLATION INSTALLATION Protection. To reduce the possibility of damage by induced transients, circuits and equipment will be protected in accordance with the requirements of NFPA 70, National Electrical Code, Article 800.
- 9. INSTALLATIONINSTALLATION WIRING. General. The installation of all wiring, cable, and equipment will be performed in a workman-like manner in accordance with NFPA 70, National Electrical Code, and specifically with Article 725 or 800, where applicable. Optical fiber cables will be protected against mechanical injury in accordance with NFPA 70, National Electrical Code, Article 770.
- 10. INSTALLATIONINSTALLATION WIRING. General cont. A conductor will be spliced or joined with a mechanical splicing device listed for this purpose. Unless specifically allowed by the manufacturer’s wiring specifications, low voltage electronic premises security system wiring will be spaced at least 5.08 cm (2 in.) from conductors of any light and power circuits, unless one of the circuits is in metal raceway.
- 11. INSTALLATIONINSTALLATION WIRING. General cont. Electronic premises security system wiring and cables will be of the appropriate gauge, strands, insulation, and electrical properties as specified by the equipment manufacturer. Termination. Connections of conductors to terminal parts will ensure a good connection without damaging the conductors and be made by means of pressure connectors, wire binding screws, or splices to flexible leads.
- 12. INSTALLATIONINSTALLATION WIRING. Termination cont. Conductors will be connected to devices and to fittings so that tension is not transmitted to joints or terminals. Wires and cables will not be placed in such a manner as to prevent access to equipment. Terminals for more than one conductor will be identified and intended for the purpose.
- 13. INSTALLATIONINSTALLATION WIRING. Termination cont. Conductors will be of the same size and composition. Terminals will be marked or colored coded where necessary to indicate the proper connections. All raceway connections to junction boxes and at all open ends of raceway or flexible raceway will be protected from abrasion and fixed in position in accordance with NFPA 70, National Electrical Code, Articles 725 and 800.
- 14. INSTALLATIONINSTALLATION WIRING. Circuit Identification. Circuit identification will be within the control panel and enclosures used for wiring connections. Circuit identification will be at all field terminations. The circuit identification will not be visible to the public. Strain Relief. Strain relief will be provided for wiring leaving control panels and junction boxes not utilizing raceway.
- 15. INSTALLATIONINSTALLATION WIRING. Service Loop Metallic Conductors. A minimum 15.24 cm (6 in.) service loop will be at control panels and enclosures used for wiring terminations. A minimum 15.24 cm (6 in.) service loop will be at field terminations. All service loops will be mechanically protected.
- 16. INSTALLATIONINSTALLATION WIRING. Service Loop Optical Fiber Cable. A service loop will be at control panels and enclosures used for terminations. The radius of the service loop will meet the manufacturer’s specifications. If no manufacturer’s specifications exist, the radius will not be less than 10 times the cable diameter. Service loops will be mechanically protected.
- 17. INSTALLATIONINSTALLATION WIRING. Routing of Cables. When determining a logical pattern for laying out the low-voltage cables always begin with the manufacturer’s recommendation for the maximum number of stations on a single cable run. The pattern should also take into account the physical layout of the rooms along with the ease of trouble-shooting the system cabling. For example, a 'T' shaped floor might tend itself to three runs; (one for each log of the "T') or, if there are a large number of stations in these corridors, six runs (one for each side of each leg).
- 18. INSTALLATIONINSTALLATION WIRING. Splicing of interconnections. NEC recommends using butt splices or equivalent crimp-style connectors for splicing the low-voltage wires. Electric tape and wire nuts are not recommended. Each manufacturer will specify a preferred splicing method.
- 19. INSTALLATIONINSTALLATION WIRING. Building-to-Building Wiring. Special care must be taken in running low-voltage wiring between buildings because its location is subject to potentially large transients and its length may result in large voltage drops. In addition, proper consid-eration of ground water leakage should be taken. Wiring shall conform to NFPA 70 725.57 Installation of Circuit Conductors Extending Beyond One Building.
- 20. INSTALLATIONINSTALLATION WIRING. Building-to-Building Wiring. Where Class 2 or Class 3 circuit conductors extend beyond one building and are run so as to be subject to accidental contact with electric light or power conductors operating over 300 volts to ground, or are exposed to lightning on inter- building circuits on the same premises, the requirements of the following shall also apply:
- 21. INSTALLATIONINSTALLATION WIRING. Building-to-Building Wiring. (1) Sections 800.10, 800.12, 800.13, 800.31, 800.32, 800.33, and 800.40 for other than coaxial conductors (2) Sections 820.10, 820.33, and 820.40 for coaxial conductors Transient Protection. All building-to- building wiring should be run in an underground conduit system. Any wiring in an above-ground conduit system must have transient protectors (as specified by the manufacturer).
- 22. INSTALLATIONINSTALLATION WIRING. Signal Loss. The length of wiring between buildings may contribute to signal losses (voltage drops) or signal deg-radation (accumulated wire capacitance). Always follow the manufacturers' guidelines regarding the length of such runs.
- 23. INSTALLATIONINSTALLATION GROUNDING. All grounding will be in accordance with NFPA 70, National Electrical Code, Articles 250 and 800. Additional grounding will be in accordance with manufacturer’s requirements. All other circuits will test free of grounds.
- 24. INSTALLATIONINSTALLATION ZONING & ANNUNCIATION. General. All required annunciation means will be readily accessible to responding personnel and shall be located as required by the AHJ to facilitate an efficient response to the event. Visible Zone Indication. When required, the location of an operated initiating device will be visibly indicated by building, floor, or other approved subdivision by annunciation, printout, or other approved means.
- 25. INSTALLATIONINSTALLATION ZONING & ANNUNCIATION. Visible Zone Indication cont. When required, the visible indication will not be canceled by the operation of an audible alarm silencing means. If all locations in alarm are not displayed simultaneously, visual indication will show that other locations are in alarm.
- 26. INSTALLATIONINSTALLATION ZONING & ANNUNCIATION. Testing. All electronic premises security systems will be maintained and tested in accordance with NFPA 731 Standard for the Installation of Electronic Premises Security Systems Chapter 9.
- 27. INSTALLATIONINSTALLATION ZONING & ANNUNCIATION. Voltage Drop. Normally, 1-16 rooms will be on a power riser. The voltage drop should be tested on each power cable as follows: a. Take the measurement at the splice point of the last splice box on the riser. b. Attach the voltmeter leads across the positive and negative power wires (as specified by the manufacturer).
- 28. INSTALLATIONINSTALLATION ZONING & ANNUNCIATION. Voltage Drop. c. Load the system by placing enough calls to represent 20% of the riser's calling capacity. d. The voltage measured should be within the specified input range for the station in the room. A reading that is too low indicates the need for additional or higher-gauge power wires.
- 29. INSTALLATIONINSTALLATION ZONING & ANNUNCIATION. Software Control. Where required, all software provided with an electronic premises security system shall be listed for use with the equipment on which it is installed. A record of installed software version numbers will be maintained at the location of the electronic premises security system.
- 30. INSTALLATIONINSTALLATION ZONING & ANNUNCIATION. Software Control. All software will be protected from unauthorized changes. All changes will be tested in accordance with NFPA 731 Standard for the Installation of Electronic Premises Security Systems Chapter 9.