How is an outlet defined by the nec

In a recent class to keep up my CEUs, the instructor lost me completely with respect to all of these definitions. My top concern is there are too many types of service conductors. I felt comfortable before that class, but now I am unsure which definition applies on any given installation. Can you help? Assembly occupancy Are multipurpose rooms always considered assembly occupancies?

On a recent project, the owner and electrical inspector required us to make modifications in several rooms for compliance with These rooms were not permitted to have more than 90 persons under any circumstances per the local building code. However, an electrical inspector pointed out that NEC Section Is that true? Tapping busbar Is it permitted to tap the busbar in a panelboard to supply adjacent electrical equipment? An engineer working for one of our clients has requested we tap the bus in an ampere A panelboard to supply a second panelboard with limited load.

The only holes in the bus are already used to secure circuit breakers. We would have to drill new holes to install lugs secured with two bolts per lug to prevent movement. The design meets the requirements for tap conductors in Section However, I have concerns about violating the panelboard listing.

Code FAQs. About the Author. Jim Dollard Code Columnist. Sign up and Get Connected. Related Stories. Next Up. Charles R. However, such protection is not required for emergency standby power disconnects [ The customer claimed it was legal per the 10' tap rule. This installation does not violation of the 10 ft feeder tap rule, assuming all of the requirements contained in But, Naturally, there are no A breakers identified to be use with nine conductors.

Most dwellings in our area have plastic underground water pipes supplying the house. The internal water piping is changed to copper inside the house. My inspector requires that we bond the interior metal water pipe system at the water heater. But I fee that I say it is a violation to make this connection further than 5 ft from the point of entry. Am I right? If the air conditioner was the only utilization equipment on the circuit, it could be rated up to 80 percent of the branch circuit ampere rating.

This table provides circuit ratings for , , , , and ampere branch circuits. MILLER, owner of Lighthouse Educational Services, teaches custom-tailored classes and conducts seminars covering various aspects of the electrical industry. For more information, visit his Web site at www. He can be reached by telephone at , or via e-mail at charles charlesRmiller.

National Electrical Code. Sign up and Get Connected. Related Stories. Next Up. Motor branch circuits are covered in Article This month, we will cover the identification of Read the Article. All rights reserved. Electrical Contractor Magazine. A multiple receptacle is two or more contact devices on the same yoke.

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