The Start of Autumn has passed, and the cool and dry autumn is perfect for home renovation. Here's a reminder for landlords who are planning to renovate: It's crucial to pay attention to the quality of home decoration wires. These wires directly affect the safety, convenience, and stability of your household electricity for decades to come. Currently, there are many wire brands on the market with varying qualities, and ordinary consumers are prone to making mistakes. We have compiled the following guide, integrating industry standards and practical experience, to teach you how to identify and purchase high-quality home decoration wires like a professional electrician.

The first two steps have already been explained. If you haven't read them yet, please search for the relevant content online.

Step 3: Smart Purchasing - Channels and Details

1. Choose legitimate channels:

Large building materials markets, brand specialty stores, official authorized dealers, and reputable brand flagship stores on major e-commerce platforms.

Avoid: Street-side small shops and products with prices significantly lower than the market average (the saying "cheap goods are no good" is especially true for wires!) 。

2. Request for Certificates:

Be sure to ask for and keep the official invoice and product qualification certificate. These are the vouchers for after-sales service and quality traceability.

3. Check Model and Specifications:

When purchasing, double-check that the wire model (BV/BVR), specification (square number), and color (red/blue/yellow-green/yellow/white, etc., purchase as needed) match your demand list. Different colors are used to distinguish live wires, neutral wires, and ground wires.

4. Check Production Date:

Wires also have an "expiry date". Insulation materials age, harden, and become brittle over time. Try to purchase products produced recently (within 1-2 years). Avoid products that have been in stock for many years.

5. Consider Colors:

Generally: Live wires (L) are red or yellow; neutral wires (N) are blue; ground wires (PE) must be yellow-green. Purchase the colors as needed to facilitate construction and future maintenance.

Step 4: Construction Supervision - Good Wires Need Good Construction

1. Pipe Protection: All concealed wires must be run through flame-retardant PVC pipes for protection. The pipe diameter should be sufficient (the total cross-sectional area of the wires inside should not exceed 40% of the pipe's cross-sectional area) to ensure heat dissipation and the possibility of future wire replacement.

2. Avoid Dead Wires: When running wires, avoid too many and too sharp bends (the standard requires that the bend angle be greater than 90 degrees and the turning radius be large enough) to ensure that the wires are "live wires" and can be pulled out and replaced in the future.

3. Joint Treatment:

For BV wires: The connection must be firm. The standard practice is to twist the wires together and solder them or use high-quality wire caps/connectors.

For BVR wires: The strands must be soldered or use special wire caps/terminals with crimping plates to ensure that all fine copper wires are reliably connected and avoid loose connections that can cause heating. This is the key to BVR construction!

4. Separation of Strong and Weak Currents: Keep the pipes for strong current (electric wires) and weak current (network cables, TV cables) at a certain distance (it is recommended to be more than 30 cm). When running parallel, it is best to use metal shielded pipes or separate them to avoid interference.

5. Keep Drawings: After the water and electricity work is completed, be sure to ask for and keep a detailed drawing of the water and electricity pipeline layout (it is best to take photos or videos) to facilitate future maintenance and avoid drilling through the lines.

Summary:

Purchasing home decoration wires is no small matter. Remember:

Safety is the red line: Recognize CCC, and reject inferior wires.

Applicability is the foundation: Accurately plan the circuits, and the wire diameter should be "bigger rather than smaller".

Quality is the key: Use your discerning eye to identify copper cores (purple-red, bright, and strong), and the insulation layer should be thick, flexible, and flame-retardant.

Brand is the guarantee: Choose reputable brands and channels, and ask for receipts.

Construction is the guarantee: Good wires also need standard construction (pipe protection, live wires, reliable joints, separation of strong and weak currents).

Spend a little more time and budget on purchasing home decoration wires, and you will enjoy decades of worry-free electricity use. Never try to save money and effort on "electricity"! I hope this experience sharing from the front line of Wanruitong Cable Electricians can truly help you. If you have specific and complex situations, it is recommended to consult a professional certified electrician for on-site design and guidance.