Commercial work uses more material and the work is usually smooth, long-lasting and more profitable than residential. This updated book has the explanations, examples, and tips to help you comply with the parts of the NEC that apply to commercial wiring in load calculations, sizing of electrical services, selecting and installing overcurrent protection and more. You'll also find how to read and understand symbols, plans, drawings and schematics common in commercial electrical work. If you want to increase your work volume and profits by moving into commercial electrical work, get this book.The remainder with electrical service equipment may be equipped with only a 20- ampere, 125-volt receptacle. Since most travel trailers and recreation vehicles built recently are equipped with 30-ampere receptacles, an acceptable arrangement is to install a power ... A wiring diagram showing the distribution system of a park electrical system serving 20 recreation vehicle lots is shown in Figure 4-15.
|Title||:||Commercial Electrical Wiring|
|Author||:||John E. Traister, Ronald T. Murray|
|Publisher||:||Craftsman Book Company - 2000|