First, according to the working environment in the selection of electric heat trace, the former need to choose explosion-proof anti-corrosion reinforced type, because for a long time in a humid environment, ordinary electric trace insulator is easy to corrode and damage;
Second, waterproof measures should be added outside the insulation layer: in a humid environment, water vapor will take advantage of the void, and if it penetrates into the interior of the electric trace, it is easy to cause a short circuit;
Third, there should be leakage protection and explosion-proof devices in the power supply part: in the humid environment, it is easy to leakage if any place is not well protected, how to prevent this situation in time to avoid danger, it is necessary for the power supply part to cut off the circuit in time after receiving the leakage signal;
Fourth, the junction box should be waterproof: waterproof facilities are also required at the junction box of the electric tracence, usually fixed with sealant (also known as 703 silicone), which has waterproof and anti-aging effects;
Fifth, the electric cable should be kept away from the heat source when used to avoid accidents.
