NEMA Guidelines Address Recessed Luminaires, Flexible Conduit


The National Electrical Manufacturers Assn. has published “LE 4-2006, Recessed Luminaires, Ceiling Compatibility,” the purpose of which is to establish standardized dimensions for recessed luminaires.

A NEMA spokesperson explained that compatibility, as referred to in the standard, means that luminaires will be designed to fit into ceiling systems without causing distortion or misalignment of ceiling members and in such a manner as to ensure their proper support within the ceiling in accordance with the National Electrical Code. Furthermore, compatibility means that a luminaire will be placed in support systems in a symmetrical manner without oversized gaps existing between the luminaire and ceiling tiles or ceiling suspension members.

For more information on the LE 4-2006, click here .

NEMA has also recently published “RV 3-2006, Application and Installation Guidelines for Flexible and Liquidtight Flexible Metal Conduits.” The purpose of this standard is to offer practical information on correct usage and industry-recommended practices for the installation of flexible metal conduit (Type FMC) and liquidtight flexible metal conduit (Type LFMC) in accordance with the NEC.

"This guide is unique in that a single document provides the designer, installer and inspector with insight on appropriate uses based on UL listings, NEC requirements and manufacturer recommendation," says Dave Mercier, chairman of the Flexible Metal Conduit Classification.

In other recent news from NEMA, the organization’s Low-Voltage Distribution Equipment (LVDE) Section has published a white paper on arc-flash analysis that highlights the need for utility system parameters in the selection of personal protective equipment (PPE).

To view the white paper, click here .

No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
Choosing controllers: PLCs, PACs, IPCs, DCS? What's best for your application?; Wireless trends; Design, integration; Manufacturing Day; Product Exclusive
Variable speed drives: Smooth, efficient, electrically quite motion control; Process control upgrades; Mobile intelligence; Product finalists: Vote now; Product Exclusives
Machine design tips: Pneumatic or electric; Software upgrades; Ethernet advantages; Additive manufacturing; Engineering Leaders; Product exclusives: PLC, HMI, IO
This article collection contains the 5 most referenced articles on improving the use of PID.
Learn how Industry 4.0 adds supply chain efficiency, optimizes pricing, improves quality, and more.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Cyber security cost-efficient for industrial control systems; Extracting full value from operational data; Managing cyber security risks
Drilling for Big Data: Managing the flow of information; Big data drilldown series: Challenge and opportunity; OT to IT: Creating a circle of improvement; Industry loses best workers, again
Pipeline vulnerabilities? Securing hydrocarbon transit; Predictive analytics hit the mainstream; Dirty pipelines decrease flow, production—pig your line; Ensuring pipeline physical and cyber security