Wood cable drums are greatly affected by external force factors such as environmental force, so anti -external power capacity (and wood cable drum material) is an important standard for measuring a wooden cable drum.
1. There are rainproof, dust -proof, and splash protection.
2. There are high temperature blocking safety devices. Set overheated overload protectors for wooden cable drums, and electromagnetic leakage protectors, dual insurance. When the temperature of the wooden cable is too high, the wooden cable drum is automatically controlled to prevent fires from occurring. Especially in the hot summer, after high temperature and rainwater "washing", unqualified cables are extremely spontaneous and leakage, which is extremely dangerous.