The cause of the fire at the end of the electric heating with the tropical end is:

End is sealing section, need to install the tail end of the junction box and sealed with the installation process, it is strictly prohibited to the tail of the tropical electricity leakage is not installed terminal box, end to moisture, easy to cause a short circuit fire.

When install the tail end of the junction box, should will be stripped of the outer sheath, shielding layer stripping, prohibited electric tropical shielding layer access at the end of the junction box, shielding net such as access to the junction box, will cause the circuit grounding, protective grounding contact is not good, easy to produce the spark, triggering a fire phenomenon,

At the end of the insulation layer exposed conductive parts, thermal expansion and contraction, in the rain and snow weather in moist environment, caused by leakage of fire.

The use of absorbent insulating tape, resulting in wet end, causing leakage of fire.

The cause of the fire in the middle of the electric heating with the tropical central:

Electric with tropical in the installation process, not the electric tropical do finished protection, trample, drag, pull, twisted electric tropical, resulting in the internal cable core deformation damage, the general construction is more messy, even if it is tough to do not pay attention to the case of fluorine plastic jacket, will be easily separated. In the condition of high temperature operation, the heat is not uniform, the local temperature is too high, which is caused by the fire.

The cable sheath is damaged, wire charged leak, causing a short circuit in the rain and snow weather wet core line.

Insulation layer is not do waterproof processing, rain and snow weather insulation layer water invasion, made with tropical part of the line in cold or wet state and larger output power, the electric power of local tropical overload, the decay rate is not uniform, the local current had caused by internal short circuit fire, electrically spark.