ECM Buyers' Guide
  

Code Q&A

Q. Am I required to install the secondary circuit conductors of a low-voltage lighting system (less than 30V) in a raceway or cable like power conductors?

A. If the low-voltage conductors will be concealed or extended through a building wall, they must be installed using any Chapter 3 wiring method, such as within a raceway, cable, or enclosure, just like power conductors [411.4(A)(1)]. In addition, if the low-voltage wiring is supplied by a Class 2 power source, it can be installed using the requirements of 725.52. This means you can use 150V cable [725.82(G)], boxes are not required, and the Class 2 conductors cannot be mixed with power conductors in raceways or enclosures unless separated by a barrier [725.55].


Want to use this article? Click here for options!





Acceptable Use Policy
blog comments powered by Disqus

what's wrong here?

What's Wrong Here?

Feb 2, 2012 7:54 PM

What's Wrong Here?

Jan 19, 2012 4:06 PM

What's Wrong Here?

Jan 5, 2012 11:53 AM

View all What's Wrong Here?

product spotlight

Emergency lighting controls

Feb 9, 2012 8:40 AM

Emergency lighting controls

The UL924 emergency lighting control relay (ERC) mounts in the ceiling and features an automatic diagnostic feature ...

View all 2012 Product Spotlights

Free Product Info

Our Product Information site is the ultimate online resource for products and services offered by Advertisers featured in our Magazine. This service is provided as a quick and easy way to request Product Information online. Get FREE product information now.

Recent Comments

More...


Social Media

More ways to stay informed...

follow us on twitter

Find us on Facebook

EC&M TV

Arlington CP9000

Arlington's new 9" diameter ceiling cover plate is the neatest way to cover unused "high hat" cans. With no tools needed, installation couldn't be faster!...

Arlington Gangable Boxes

Designed for new or retrofit applications, these snap-together gangable plastic boxes eliminate the need to construct a multiple-gang steel box out of several individual ones...

Understanding NEC Requirements for Solar Photovoltaic Systems
During this session, Mike Holt will address possible conflicts or confusing NEC requirements, provide tips on proper electrical installation techniques, and discuss the dangers related to improper installations. View this On Demand Webinar!



resources

product info icon

product info

tradeshow icon

tradeshow

research icon

research

industry links

industry links

rss icon

rss

Browse Back Issues

Browse Back Issues