Three cases of cables fire experiments with different ventilation rate in real scale electronic cabinet have been carried out. In each experiment, five cables with 14 mm in out diameter and four copper conductors with 1650 mm in length were used. the insulation and cover of the cables was combustible. Temperature of the fire cables, CO, O_2 as well as temperature in different location in the center of the cabinet in the fire cabinet were measured as a function of time. The key role of the ventilation rate on the temperature in the center of the cabinet and the concentration of CO and O_2 were clearly shown, but the influence on fire spread of cable fire was not so much significantly.
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