Installation Guide For Terminal Blocks: Proper Operation To Ensure Safety

Terminal blocks are critical components in electrical connections, and their installation quality directly affects the stability and safety of the circuit. Here is a detailed installation guide to help you standardize operations and avoid safety hazards.

Preparation before installation

Tools and materials: Prepare appropriate specifications of screwdrivers, wire strippers, multimeters, and standard wiring terminals (such as cold pressed terminals, spring terminals, etc.). Check the appearance of the terminals to ensure that there are no cracks, deformations, or oxidation.

Power off operation: Before installation, the power must be cut off and a multimeter must be used to confirm that there is no voltage before proceeding to the next step.

Cable processing: According to the terminal specifications, use wire stripping pliers to remove an appropriate length of insulation layer (usually half the length of the terminal), ensuring that the copper core is free of damage and burrs. If the cable is thick, the copper wire can be tightened appropriately, but excessive bending should be avoided to prevent breakage.

Installation steps

Choose matching terminals: Select the corresponding specifications of terminals based on the cross-sectional area of the wire and the current load, to avoid "small horses pulling big cars" or material waste.

Crimping or fixing:

Cold pressed terminal: Insert the wire into the terminal hole and press it evenly with a crimping tool to ensure a tight and seamless contact surface.

Spring terminal: Simply insert the wire into the spring clamp and hear a "click" sound to indicate locking.

Bolt terminal: Wrap the wire around the bolt and tighten it to the specified torque (usually 0.5-0.8N · m) with a screwdriver to avoid being too loose or too tight.

Insulation treatment: Cover the outer part of the terminal with heat shrink tubing or insulation tape to prevent the risk of short circuit or electric shock.

precautions

Avoid mixing: Wires of different materials (such as copper, aluminum) or voltage levels must not share the same terminal.

Regular inspection: Long term operating equipment should regularly check whether the terminals are loose, overheating, or discolored, and tighten or replace them in a timely manner.

Environmental adaptation: In humid, corrosive, or high-temperature environments, terminals with higher protection levels (such as IP67 waterproof type) should be selected.

Proper installation of wiring terminals is the foundation of electrical safety, and it is necessary to strictly follow the specifications. Do not cause fires or equipment damage due to negligence.