Ask Randall

Randall Whitehead, IALD

Randall Whitehead, IALD, is a professional lighting designer and author. His books include "Residential Lighting, A Practical Guide." Whitehead has worked on projects worldwide, appeared on the Discovery Channel, HGTV and CNN, and he is regular guest on Martha Stewart Living Radio. Visit his website www.randallwhitehead.com for more information on books, upcoming seminars and the latest lighting trends.

Recent Posts

March 29, 2016
Yes, exactly. An incandescent bulb at full brightness has a color temperature of 2700K. Additionally, incandescent bulbs also get warmer in color as...
March 29, 2016
There is still inventory out there for higher-wattage incandescents, but I hope people will use LED sources, which use less power, create less heat...
February 29, 2016
LEDs do very well in cold and freezing temperatures. They are used throughout the United States and other countries for roadway and parking lot...
February 29, 2016
I would say that lumen output is a measurement of the illumination a bulb produces. The wattage is the amount of energy it consumes to produce that...
February 29, 2016
CSA (Canadian Standards Association) is the UL of Canada and just as stringent. They are good to go for installations in the United States.
February 29, 2016
People are always putting high-wattage bulbs in their exterior decorative fixtures. They think it provides more light, but it just produces more...
February 29, 2016
I don’t know why it was not a part of the lighting lexicon earlier, but my guess is that because all incandescents were 100 CRI and all fluorescents...
February 01, 2016
Yes, using just recessed downlights in a room produces harsh shadows on people’s faces and makes the ceiling feel lower. I would recommend dividing...
February 01, 2016
As far as indirect lighting goes, using LEDs, I would recommend 250 lumens per foot. Your pendant fixtures should be in the 36-inch to 42-inch...
February 01, 2016
The short answer is yes, you can get LED that is daylight in color and has full-spectrum quality. I need to put in a qualifier, though. Full-spectrum...

recent articles

Q: How did you find your calling?A: My love of glass began when I was a young girl visiting my grandparents’ chandelier and... read full story
Residential Lighting: What’s the outlook for homebuilding? Matt Belcher: The forecast for new home construction for the rest... read full story
2016 Houzz & Home Survey An annual Houzz survey of 120,000 respondents on residential remodeling, building and... read full story
There’s something to be said about learning from the experience of others — in personal matters and in business. Mom-and-pop... read full story

Webinars

Sponsored by Legrand and Bulbrite.  Wednesday, October 5 at 2 p.m. EDT Register for this free CEU webinar here. Webinar Overview:Learning units:AIA/CES LU (HSW) 1.0... read full story
This webinar has already taken place, but you can still watch it on demand by registering here. Sponsored by Emerson and Legrand. Webinar Overview: Learning units:AIA/... read full story
This webinar has already taken place, but you can still watch it on demand by registering here. Webinar Overview:Learning units:AIA/CES LU (HSW) 1.0 Learning UnitIDCEC (IIDA/... read full story
E-mail Subscriptions