When selecting a cable branch box, you need to pay attention to these!

Release time:

2021-08-12

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Abstract

With the booming development of the real estate industry, the transformation of the State Grid is also changing rapidly, and the role of cable branch boxes is becoming increasingly significant. There are more and more manufacturers of cable branch boxes in the market, making it a headache for many businesses looking to purchase wired branch boxes to decide how to choose. Today, I will tell you what to pay attention to when purchasing cable branch boxes.

With the booming development of the real estate industry, the transformation of the State Grid is also changing rapidly, and the role of cable branch boxes is becoming increasingly important. There are more and more manufacturers of cable branch boxes in the market, and for many businesses looking to purchase wired branch boxes, how to choose has become a headache. Today, I will tell you what to pay attention to when purchasing.Cable branch boxWhat to pay attention to.

1. The grounding loop of the cable branch box should be able to withstand about 87% of the rated short-time withstand current of the main circuit to ensure the safe use of the cable branch box.

2. The outside of the operation room door of the cable branch box should have a clear and obvious main wiring diagram for warning and use. Generally, cable branch boxes should be equipped with a base plate, fireproof sealing material, and cable devices. After that, seal the gaps in the base plate with fireproof sealing material to prevent moisture from rising into the cable branch box from the cable trench.

3. Choose EPDM as the main material for sealing cable joints in cable branch boxes: this material is hard and brittle with poor sealing performance due to weather conditions during long-term operation. It affects thermal expansion and contraction, leading to internal interface separation, allowing impurities and dirt from the air to enter internal interfaces, causing leakage breakdowns, pollution flashovers, and other hazards. Ethylene propylene diene monomer rubber is a flammable material that can easily cause leakage or electric arc flashes and is prone to burning. Once the seal is damaged, it can easily lead to accidents. Additionally, its moisture-proof, waterproof, and aging resistance performance is also weak, failing to meet long-term operation and maintenance-free requirements.

4. There is a certain price difference between direct manufacturers and agents.

5. Customers purchasing cable branch boxes will definitely want better quality products, so careful testing is required during purchase. If the manufacturer's quality does not meet standards, it is advisable to consult old customers or check their evaluations and usage experiences to see if the product quality is good.

Our lives cannot be separated from electricity, so consumers looking to purchase wired branch boxes should not be careless. Of course, the premise of purchasing is to choose a regular and qualified manufacturer of cable branch boxes.

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