Electrical Construction & Maintenance

Stumped by the Code? Rules Regarding Wiring Installed in Ducts Fabricated for Environmental Air

All questions and answers are based on the 2017 NEC. Underlined text indicates a Code change. Q. What are the Code rules regarding wiring installed in ducts specifically fabricated for environmental ...
Electrical Construction & Maintenance

Stumped by the Code? Wiring Methods for Lay-In Ceilings, Making Intersystem Bonding Terminations, and More

All questions and answers are based on the 2011 NEC. Q. What wiring methods are allowed by the Code in spaces above a lay-in ceiling? A. Section 300.22(C) applies to spaces used for air-handling ...
Fix It Homestead on MSN

The electrical tidy up that creates a code problem by accident

You tidy a panel, bundle loose cables, or cram one more splice into a junction box, and the work looks sharper than what you started with. Yet that same “cleanup” can quietly push you out of ...
Nasdaq

SKYX Files for a Mandatory Safety Standardization with the National Electrical Code (NEC) for Its Outlet Receptacle for Ceilings in Homes and Buildings

In a market of hundreds of millions of installations, a mandatory standardization of SKYX's ceiling outlet platform, should it occur, would enable a robust, safer plug and play ceiling installation of ...
Nature

Stability of Wertheimer–Leeper wire codes as a measure of exposure to residential magnetic fields over a 9- to 11-year interval

The Wertheimer–Leeper (W–L) wire code is a construct used as a surrogate indicator of residential exposure to electromagnetic fields. However, little is known about how changes in electrical ...
Electronic Design

Striped Circuit Wire Meets National Electrical Codes

THHN striped circuit wire helps electrical contractors meet the requirement changes in the 2008 National Electrical Code such as Section 210.4 (B) requiring multi-wire branch circuits to have a means ...