The electrical contractor shall provide an AC power system for the audiovisual system. The AC power system may include isolation transformers, breaker panels, and distribution as noted. Refer to electrical drawings.
Each circuit shall be wired as a 3-wire single phase 120 volt, with a separate hot, neutral, and ground conductor for receptacle.
The electrical contractor shall provide and install conduit and all other enclosures, as called out in the audiovisual device/equipment drawings unless explicitly noted otherwise. Conduit shall comply with NEC requirements for conduit installation. Cross reference and coordinate with the electrical drawings.
All conduit shown is for audiovisual system signal cable and is not related to any conduit for AC power. Conduit quantities and sizes are specified based on the system requirements. Do not combine multiple parallel runs into larger conduits.
The conduit paths of the sound, communication and video systems should not be routed near power transformers, SCR dimmers, power control equipment, heavy current switchgear, fluorescent ballasts, motors or any other equipment that may be a source of interference.
All interior junction boxes shall be NEMA 1 rated unless otherwise specified and shall be provided with covers by the electrical contractor.
All conduit connections shall be furnished with nylon bushings to prevent damage to cables from burred or unevenly cut conduit.
All junction boxes are to be given a unique identifying number that shall be legibly written on the inside cover with permanent, non-fading, weatherproof ink.
Keep 90° bends to a minimum. The conduit system shall not have more than three 90° bends or their equivalent between pull boxes.
All conduit runs in excess of 100 feet shall have intermediate junction boxes every 100 feet or three bends, whichever comes first.
All audio/visual system related junction boxes shall remain accessible at all times.
Electrical contractor shall provide nylon pull strings in all conduits.
Completed floor pocket installation must be installed flush with finished floor surface. Coordinate installation with the architectural drawings.
Conduits must enter the floor pocket back box thru the bottom of the lower 2½ inches of the side walls.
Provide adequate cover and bracing during concrete pouring, to prevent leakage and/or collapse of the back box. Pour concrete completely around the back box.
No flex conduit is to be used in the audiovisual system unless otherwise noted.
All conduits carrying audiovisual signals are not to be run parallel to power conduits if the spacing exceeds 20 feet.
Conduit fill shall not exceed 40% unless otherwise noted.
Insulate all conduits and enclosures from incoming conduits.
All conduits shall be securely fastened to building structure every 10 feet and within 3 feet of each box.
All conduits for audiovisual system shall be at least 3/4-inch trade size unless otherwise noted.
All conduits shall be reamed and bushed at all ends.
Electrical contractor shall refer to electrical drawings for all 120VAC conduit sizing.
Electrical contractor shall refer to other drawings for non-audio/visual system related electrical information for these areas. Audio/visual system drawings do not contain all room electrical requirements.
The electrical contractor shall install and wire all high voltage devices.
All power circuits shall be 120VAC, 20 AMP dedicated circuits unless otherwise noted.
120VAC power to the equipment racks shall be terminated inside the racks to audio/visual system subcontractor-supplied isolated ground plugmold plugstrips or isolated ground quad convenience outlets.
Conduit will be required between any and all loudspeakers unless the loudspeakers are associated with an accessible ceiling plenum.
All cabling installed and free-run above finished ceiling shall be supported with J-hook cable management system. Coordinate any CAT5e/CAT6 cabling colors with data/voice contractor. No red jacketed cables are permitted.
The general contractor shall be responsible for final coordination of all installation and finish requirements within items of millwork or casework.
