Auxiliary Gas Flame Crossword
Auxiliary gas flame crossword clue. The big one Courier Mail crossword puzzle on Saturday, 24 June 2017. 10 letters, 2 words (5,5). Also appear in Daily Telegraph/Herald Sun.
The answer: PILOT LIGHT
A pilot light is a small gas flame, usually natural gas or liquefied petroleum gas, which serves as an ignition source for a more powerful gas burner. Originally, a pilot light was kept permanently alight; however, this is wasteful of gas. Now it is more common to light a burner electrically, but gas pilot lights are still used when a high energy ignition source is necessary, as in when lighting a large burner.
The term “pilot light” is also used occasionally for an electrical indicator light that illuminates to show that electrical power is available, or that an electrical device is operating. Such indicators were originally incandescent lamps or neon lamps, but now are usually LEDs.