N.Y. General Business Law § 321: Standard of illuminating power

§ 321. Standard of illuminating power. The maximum illuminating power

required and minimum illuminating power permitted of gas so furnished or

supplied in any such city shall be as follows: If a coal gas, sixteen

candles; if a mixed coal and water gas, eighteen candles; and if a

carburetted water gas, twenty candles. A candle shall mean a sperm

candle, six to a pound, burning at the rate of one hundred and twenty

grains of spermaceti per hour. The test for illuminating power shall be

made with gas obtained from a service pipe or main located at a distance

of not less than one mile nor more than one and one-half miles from any

distributing holder, using, for coal gas and mixed coal and water gas

containing more than fifty per centum of coal gas an F Argand burner,

and for mixed coal and water gas containing fifty per centum and less of

coal gas and for carburetted water gas a number seven slit union Bray

burner, on a basis of consumption of five cubic feet of gas per hour.