NECA newsletter:
"When energy-saving 34- and 35-watt lamps are used as replacements in these older fixtures, the ballasts may overheat, automatically shutting off the fixtures for safety reasons. While most commercial users understand this problem and have replaced or upgraded their fluorescent luminaires, many household users still have older fixtures designed for 40-watt tubes in their basements, garages, kitchens, etc."
Check out this link for more.
http://www.neca-neis.org/newsletter/ccl/report.cfm?ArticleId=1338
