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Oil burner test 2025 Questions and Answers Number 2 oil has what btu's - --CORRECT ANSWER--140,000 Which fuel oil has the lowest viscosity - --CORRECT ANSWER--#1 Fuel oil is made up of mostly - --CORRECT ANSWER--Hydrogen/carbon Flash point of #2 fuel oil is - --CORRECT ANSWER--115 degrees Combustion triangle - --CORRECT ANSWER--oxygen, heat, fuel vent pipes must be atleast ______ feet above or _______ feet below any window or door. they must also be _____ get away from property line to prevent sewer gas from drifting to neighbors house - --CORRECT ANSWER--3 feet above or 5 feet below door or window. 3 feet from property line To make combustion efficiency test, a whole must be made - --CORRECT ANSWER--In the flue pipe before the draft control What three colors does the NEC allowed to be used for ground wire? - -CORRECT ANSWER--Green, bare of green with yellow stripe ....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1