A burner is a lamp part used in oil lamps to produce a flame or light. Burners can also be electric. No. 1 burner size is 7/8'' in diameter. No. 2 burner size is 1-1/4'' in diameter. No. 3 burner size are 1-5/8'' in diameter. Oil burners require wicks to produce the flame and an electric burner is cut out in order that the electric lamp socket replaces the wick. Chimneys are used to protect against burns by flame and for decoration in electric lamp burners.