Eaton Electric F1260 BC3 pendant set for low energy lamps/adaptors. It has 4″ cable. The new building regulations – compact fluorescent lamp range is a dedicated lamp holder range for use with low energy lamps. Following the latest edition of Part L of the building regulations, developed a non-standard interface to ensure only low energy lamps can be used. The purpose of these regulations is to ensure that domestic dwellings have at least some efficient lighting, typically 3-4 lighting points in an average sized dwelling. This range covers the most commonly used items within the home.