App note from Littelfuse on protecting LED lights from overloaded circuits, overvoltage and electrical shorts assuring safety on customers from these hazards. Link here (PDF)
LED technology has advanced rapidly, with improved chip designs and materials facilitating development of brighter and longer-lasting light sources that can be used in a wide spectrum of applications. A growing awareness of the need to reduce energy costs has also made LED lighting increasingly popular.
In spite of the growing popularity of the technology, LED light manufacturers continue to wrestle with the fact that LED luminaires are very heat sensitive. Excessive heat or inappropriate applications can dramatically affect performance.