Electrical sub panel - Bookshelf
This practice will help ensure that there is room in an existing panel for future expansion of the electrical system. summary breaker for each 120-volt circuit you ... Your calculation will include only those electrical loads fed from the subpanel.
About this book
Completely up to date with the 2014 edition of the National Electrical Code, RESIDENTIAL CONSTRUCTION ACADEMY: HOUSE WIRING, 4e delivers the latest and best practices in residential electrical wiring. This vividly illustrated, full-color text is based on the HBI National Skill Standards that cover the skill sets necessary to achieve a first job in construction or as an electrician. The text provides thorough coverage of green topics, sustainable building practices, alternative energy systems, and much more. From Experience sections address common residential wiring practices and scenarios, while Caution boxes emphasize the ongoing importance of safety.Important Notice: Media content referenced within the product description or the product text may not be available in the ebook version.
Before installing a subpanel, consider its necessity. Certainly, it's a convenience in the event of a tripped breaker, but is it worth the expense of purchasing a second panel (albeit a smaller one than your main panel)? The convenience factor ...
I How to Plan a Subpanel Installation 1. Find the gross electrical load for only those areas that will be served by the subpanel. Refer to Evaluate Electrical loads (pages I36 to I37). Example: In the I I H d. 400-sq.-ft. attic room addition shown on ...