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RESOLUTION NO. 78-40 PAGE THREE electrical system. It must be determined that this has been completed at final inspection and periodically throughout the life of the system to check for mechanical damage or corrosion from electrolysis, etc. 13. Amendment to Section 300-13(b~: The Code allows 15 ampere receptacles, etc., on 20 ampere circuits. The recep- tacles have, in the past, been used to splice the circuits to- gether at each location. This is in violation of their "list- ing.'' Some burn-out has been traced to this practice. Now, the only current going through each receptacle will be what is plugged into that individual receptacle and not from others on that same circuit. 14. Amendment to Section 300-15~): Exception 1 is deleted because use of exposed cable is deleted by the amend- ment to Section 336-3. Exception 5 is deleted for the following reasons: This wiring method was developed for mobile homes and other controlled modular structure systems, does not lend self to on-site construction methods. Numerous special tools, boxes, splicing kits, etc. must be used to install, repair or alter this system. Home owners would, and now cannot, obtain these items. An untrained person oould not work on this system, and thousands of unsafe electrical jobs would be completed by owners and other untrained persons. Until this system has had nationwide publicity and the average person has ready access to all its special requirements for a safe installation, it must not be "thrown" on the market. 15. Amendment to Article 334: Metal Clad Cable, commonly known as BX, has not been used, except by an occasional homeowner, for years in this area. It never gained any popu- larity as a wiring method due to the difficulty of properly in- stalling it free from shorts and grounds. The proper connectors, boxes and short insulating inserts are not readily obtainable any longer even to electrical contractors. This wiring material should have been deleted as an "approved" wiring method years ago. 16. Amendment to Section 336-3: Due to the occupant load and lesser degree of safety that is provided by use of non~metallic sheathed cable, this amendment limits its use to residential structures of three floors or less above grade. A few of the dangers justifying this restriction are as follows: La) penetration of cables unknowingly by nails after completion of the structure; (b) mechanical damage to cables by workmen during construction; (c) safety hazards created by persons attempting to add new wiring; ~d) transference of a fault in the cable immediately to the structure; and (e) liklihood of mechanical damage during fire or earthquake, with consequent lack of protection for emergency power to elevators and exit lights. 17. Amendment to Section 336~6. Non-metallic sheathed cable is very easily damaged mechanically, and, when damaged, it becomes an immediate fire or life hazard. The exposed installa- tion of such cable, which this amendment prohibits, increases the chances of mechanical damage tremendously.