No series rated protective equipment andor devices

This preview shows page 26 - 28 out of 40 pages.

coordinated to provide selective tripping. No, series rated protective equipment and/or devices will be allowed! Surge protection should also be incorporated in the coordination analysis. 4.1.3 Location and Space Requirements. Electrical equipment rooms will be located at or near the building exterior to facilitate initial installation of large equipment, and removal and replacement of defective equipment. Adequate space will be provided for maintenance of electrical equipment and equipment removal. Pipes and other equipment foreign to the electrical equipment will not be located in, enter, or pass through such spaces or rooms. Where practicable in finished areas of hospitals, panelboards, signal and communication cabinets will be grouped, surface-mounted, in © J. Paul Guyer 2010 25
Image of page 26

Subscribe to view the full document.

separate electrical and communication ventilated wiring closets. Joint use closets are not acceptable and will not be provided. Closets in which dry-type transformers and automatic transformer type regulators are installed, should be located away from noise sensitive areas and provided with adequate ventilation to maintain an ambient temperature not to exceed 86 degrees F. For hospitals with more than one floor, electrical and communication closets should be stacked vertically whenever practicable. Panelboards in critical care areas will be located in the vicinity of their loads, and will be accessible to the operating staff only. Such panelboards will not be located in the patient bedrooms. 4.1.4 Electrical Rooms. A minimum of one branch circuit electrical room shall be provided for each smoke zone of a hospital building space, and each 2090 square meter (22,500 square feet) of other medical facilities building space. The footprint for each piece of equipment with working space, and NFPA-70 clearance requirements shall be shown. No branch circuit electrical room will feed loads beyond the smoke zone in which it is located. The branch circuit electrical rooms will be accessed off of a primary through corridor, and the entry door or doors will swing 180 degrees as not to impede traffic flow in the corridor or violate clearance requirements of NFPA-70. In multi-story medical facilities, the branch circuit electrical rooms should be stacked. A minimum of 20 percent additional free wall space should be provided to accommodate customer flexibility requirements. 4.2 Conduit, Cable Tray and Wire . All wiring will be insulated copper in conduits and installed per NFPA-70. Metal enclosed feeder, plug-in busways or surface metal raceway may be used. A green insulated copper ground conductor will be run with all branch circuits. Wiring in all patient care areas and the life safety branch and critical branch of the essential electrical system will consist of insulated conductors installed in a separate metallic raceway. Where cable trays are used the normal and essential power system conductors will be in separate full height compartmented, and electrically continuous covered trays. Cable and raceway circuit identification shall be at each end and at all transitions.
Image of page 27
Image of page 28

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern