What are the reasons for the appearance defects of rubber sheathed cables?

(1) The mold sleeve is not smooth and has no chamfers; there are impurities or cooked rubber particles blocking the mold opening; dragging the tube in the vulcanized tube is scratched; the diameter of the rubber gasket at the outlet of the vulcanizing tube is too small, etc., which may cause the sur... READ MORE

What are the standards for wire and cable construction?

Circuit short-circuit protection, load protection, wire diameter selection, and low-voltage electrical installation (air conditioners, household appliances, etc.) should be carried out in accordance with regulations. When laying wires through the pipe, the total cross-sectional area of the wires in... READ MORE

What are the wire connection methods and wiring specifications?

1. Crimping cap connection methodThis method is safer, but it requires professional tools-crimping cap and crimping pliers. It is very simple. Just wind the wire on the crimping cap and tighten it with crimping pliers. Some friends here may ask: What size crimping cap is appropriate? This actually ... READ MORE

How to choose home improvement wires and cables?

The electric wire is composed of one or several soft wires, which are covered with a light and soft protective layer, which is used to carry electric current. There are various forms such as solid, stranded or foil woven. According to the insulation status, it is divided into two categories: bare w... READ MORE

What are the methods to detect cable breakpoints?

1. Induction pen:First disconnect the power supply, remove the power supply from the cables around the cable with the break point, then connect the cable with the break point to the live wire, and then use the induction electric pen to move slowly perpendicular to the cable. When the AC signal of t... READ MORE

What kind of wire should not be used or bought?

1. Uneven insulation layer, too thick or thin wire insulation layer is not good, the national standard stipulates that the insulation layer should be uniform, not eccentric, and it will not break easily if you pull it hard, otherwise pay attention.2. You can't buy wires with black and dark copper c... READ MORE

What is a flame-retardant and fire-resistant cable?

1. Flame retardant: Under the specified test conditions, the sample is burned. After the fire source is removed, the flame spread on the sample is only within a limited range and extinguishes itself, that is, it has the characteristics of preventing or delaying the occurrence or spread of flame abi... READ MORE

How to install wires in the room?

1. Walk on the roof. The roof is not slotted in the roof, but along the wall along the inner corner. Then the ceiling hides the pipe. Jinhuanyu wire reminds you that if the water circuit fails, it is easy to find if the water circuit fails. The point of failure, maintenance is more timely and conve... READ MORE

What is the difference between a soft wire and a hard wire?

Home improvement wires can generally use BVR, BVVR, BV, BVV, etc., among which there are soft wires and hard wires. BVVR and BVVR are soft wires, and BV and BVV are hard wires.BVR and BVVR are single-core, multi-strand flexible wires, and BV and BVV are single-core, single-stranded hard wires. Comp... READ MORE

What are the safety requirements when using wires and cables?

A cable is usually a rope-like cable formed by twisting several or several groups of wires (at least two in each group). Each group of wires is insulated from each other and is often twisted around a center. The whole outer bread has a height Insulating cover layer. It is mostly erected in the air ... READ MORE