(1) fire performance
As the mineral cables are all made of inorganic materials, it will not cause fire, can not burn or combustion, but will not produce toxic gases, even if there is burning in the flame, the cable can still work properly. After the fire cleared, the cable without replacement, is a true sense of the fire cable, for the fire line to provide a foolproof guarantee, through the International Electrotechnical Commission IEC331 test.
(2) carrying capacity
As a result of the normal use of mineral insulated cable temperature can reach 250 ° C.IEC60702 provides mineral insulated cable continuous working temperature is 105 ℃. This is taking into account the terminal sealing material and safety needs. Even so, its intercept flow is far more than other cables, because Magnesium oxide powder has a better conductor coefficient than plastic, so the same operating temperature, interception greater, for 16mm above the line, you can reduce a cross-section, do not allow people to contact the place, you can reduce the two sections.
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