3HNM07686-1 ssumption is that they are evenly spaced along the cable. Each amplifier contains two fuses on the PCBA in the 24 V dc input to protect and isolate the handset and speaker amplifier circuitry in the event of a failure. Power line wiring to each amplifier or group of amplifiers should have a fuse or circuit breaker to protect against wiring failures. If cable with No. 14 AWG power line conductors is used, a 15-amp fuse or circuit breaker should be installed for each branch line at the point it connects to the battery. Fuse or circuit breaker rating is determined by the size cable used in the branch. Consult the National Electrical Code (NFPA70) or Canadian Standards Association (CSA 22.1) for the maximum allowable capacity of the wire used. The GAI-Tronics 24 V dc series of Page/Party® system equipment is designed to operate from a 24-volt dc rechargeable battery. A battery charger may be connected to the battery to maintain the charge. CAUTION Under NO condition should this equipment be operated from a battery charger without the batteries connected. Most chargers have an unloaded output of 35 to 45 volts that can quickly damage the equipment designed for nominal 24 volts. To maintain a proper state of battery charge, the voltage across the batteries will be somewhat greater than 24 volts, but should never exceed 28.8 V dc. Grounding the negative side of the battery system at only one point is recommended and will ensure hum- and noise-free operation. Enclosure Placement All GAI-Tronics Page/Party® units are wired in parallel. Good system layout design minimizes the cable required for each installation. GAI-Tronics multi-conductor cable, designed especially for this application, is recommended. The number, size, and color-coding of conductors are listed in the accompanying system connection diagrams. System layout and power cable length are important considerations when installing Page/Party® equipment. Consult the Maximum Cable Distance table for typical cable lengths. The cable distance between stations as well as total cable distance must be considered. Cable dist |
