a fluid cooled roof assembly for an electric arc furnace comprised of at least three circular sector shaped panels having coolant passages and an outer ring member supporting a plurality of connected arcuate ring sectors which extend upwardly away from the interior of the furnace giving added height thereto , and on which the assembled panels are supported in a flat disposition . the circular sector panels , when assembled , are designed to provide ports for receiving the electrodes and come together at a point location in the center of the roof forming a full circle which completely covers the furnace .