Poor Fixing Of Neutral Blocks? Teach You How To Effectively Solve Problems

Poor fixing of neutral blocks is a common problem in electrical connections, which can lead to poor contact, heat generation, and even safety accidents. The following will analyze the reasons and provide specific solutions to help you effectively solve this problem.

1、 Common cause analysis

Improper installation operation

The screws are not tightened or the torque is insufficient, resulting in loose terminals.

The cable was not fully inserted into the terminal hole during wiring, resulting in virtual connection.

Material and process defects

The terminal material has insufficient strength and deforms after long-term stress.

Oxidation or damage to the coating on the terminal surface affects conductivity.

Environmental factors have an impact

Loose terminals caused by vibration or impact (such as in mechanical equipment).

Moist or corrosive environments accelerate terminal aging.

2、 Effective solutions

Standardize installation operations

Tighten screws: Use a torque wrench to tighten the screws according to the manufacturer's recommended torque value (such as 2.5-3.5N · m), avoiding over tightening or over loosening.

Cable processing: The stripping length is moderate (usually 1-2mm deeper than the terminal hole), ensuring that the wire core is fully inserted and tightly pressed.

Select high-quality terminals

Choose copper tin plated or copper silver plated terminals, which have strong corrosion resistance and good conductivity.

Priority should be given to terminals with anti loosening design (such as those with tooth patterns or locking structures).

Add auxiliary fixing measures

Anti loosening gasket: Install a spring gasket or locking gasket under the screw to prevent loosening.

Glue fixing: Apply a small amount of thread locking adhesive (such as Loctite 243) at the terminal connection to enhance the fixing effect.

Optimize environmental protection

In damp or corrosive environments, use waterproof junction boxes or apply insulating paint to protect terminals.

For equipment with high vibration, install shock absorbers or fixed brackets to reduce terminal stress.

Regular inspection and maintenance

Develop an inspection plan and regularly check the terminal fastening status and contact condition.

Replace aging or damaged terminals in a timely manner to avoid the accumulation of hidden dangers.

By using the above methods, the fixed reliability of the neutral blocks can be significantly improved, ensuring the safety and stability of electrical connections.