Electric wire is one of the most inconspicuous materials in the selection of materials for home improvement. Although the electric wire has a small "responsibility", it is important, and it is the guarantee of the safety of people's lives and property. Many fires in life are caused by the aging of wire and cable, unreasonable configuration, or the use of poor quality wires. Therefore, consumers must polish their eyes when purchasing electric wires, and carefully identify them to prevent them from happening.
There are many types and specifications of wires on the market. How do you identify the advantages and disadvantages when buying?
Mr. Bai Anju Anju:
Consumers can identify from the following four aspects when purchasing:
1. First look at the coiled wire packaging brand, whether there is the "Great Wall Logo" and the production license number of the China Electrotechnical Product Certification Committee; see whether there is a quality system certification; see whether the certification is standardized; Factory address, inspection seal, production date; see if trademarks, specifications, voltage, etc. are printed on the wires. Also depends on the cross-section of the copper core of the wire. The superior copper is bright in color and soft in color. The copper core is reddish in yellow, indicating that the copper material used is of good quality, and the yellowing of the yellow copper is a reflection of low-quality copper.
2. You can take a wire head and bend it by hand repeatedly. Anything that is soft to the touch, has good fatigue resistance, has a high elasticity to the plastic or rubber feel, and has no cracks on the wire insulation is a superior product. The outer plastic skin of the wire should be bright in color and fine in texture, and there should be no open flame when lit with a lighter.
3. Take a section of insulation and see if its core is in the middle of the insulation. Not centered is the phenomenon of eccentricity caused by the low process. If the power is small, it can be safe. Once the power consumption is large, the thinner side is likely to be broken by current.
4. In the end, we must look at the length and thickness of the core to see if it has any hands or feet.
What is the difference between lighting cables and air conditioning cables?
Mr. Bai Anju Anju:
Household power cords should use BVV2 × 2.5 and BVV2 × 1.5 types of wires. BVV is the national standard code for copper sheathed wire. BVV2 × 2.5 and BVV2 × 1.5 respectively represent 2 cores 2.5 square mm and 2 cores 1.5 square mm. In general, BVV2 × 2.5 is the main line and trunk line, and BVV2 × 1.5 is the single electrical branch line and switch line. BVV2 × 4 for one-way air-conditioning dedicated line, with special ground wire.
Do you have to use a cable tube for home improvement wiring?
Mr. Bai Anju Anju:
The use of a wire tube can play a very good role in protecting the wire, avoiding the acid and alkali damage to the wire, and can prevent rodents and insects from eating the wire. When the wire is overheated and fires, it can effectively flame retard and prevent Fire occurred. The wiring of home decoration generally uses PVC plastic pipes as wire protection pipes. When laying the wire through the pipe, the total wire cross-sectional area of ​​the wire should not exceed 40% of the inner diameter of the pipe. When designing the wire laying, the wire and the signal wire cannot pass through the same tube to avoid mutual interference.
- Specification:
- 1. Out diameter: 406.4mm - 1422.4mm (16"-56")
- 2. Thickness: 9.5mm-38.1mm
- 3. Length: 6m-12.5m
- 4. Type: LSAW (Longitudinal Submerged-Arc Welded), DSAW (Double Submerged-arc welded) Steel Pipe
- 5. Manufacturing Process:JCO(JCOE,COE)
- 6. Standard: API SPEC 5L (ISO 3183), GB/T 9711.1, GB/T 9711.2, GB/T 9711.3 BSEN10217
- 7. Uses: for conveying gas, water and oil, in the oil or natural gas industries
- 8. Chemical Analysis (%):
-
Standard Type of pipe Class Grade C max Si max Mn max P max S max V max Nb max Ti max API SPEC 5L
/ISO 3183WELD PSL1 L245 B 0.26 - 1.2 - 0.03 0.03 - - L290/X42 0.26 - 1.3 - 0.03 0.03 - - L320/X46 0.26 - 1.4 - 0.03 0.03 - - L360/X52 0.26 - 1.4 - 0.03 0.03 - - L390/X56 0.26 - 1.4 - 0.03 0.03 - - L415/X60 0.26 - 1.4 - 0.03 0.03 - - L450/X65 0.26 - 1.4 - 0.03 0.03 - - L485/X70 0.26 - 1.4 - 0.03 0.03 - - PSL2 L245M/GR.BM 0.22 0.45 1.2 0.025 0.015 0.05 0.05 0.04 L290M/X42M 0.22 0.45 1.3 0.025 0.015 0.05 0.05 0.04 L320M/X46M 0.22 0.45 1.3 0.025 0.015 0.05 0.05 0.04 L360M/X52M 0.22 0.45 1.4 0.025 0.015 - - - L390M/X56M 0.22 0.45 1.4 0.025 0.015 - - - L415M/X60M 0.12 0.45 1.6 0.025 0.015 - - - L450M/X65M 0.12 0.45 1.6 0.025 0.015 - - - L485M/X70M 0.12 0.45 1.7 0.025 0.015 - - - L555M/X80M 0.12 0.45 1.85 0.025 0.015 - - - - 9. Mechanical Properties
-
Standard Class Grade Yield Strength (MPa) Tensile Strength (MPa) Elongation(%) Y.S/T.S API SPEC 5L
/ISO 3183PSL1 L245 B min 245 415 b - L290/X42 min 290 415 b - L320/X46 min 320 435 b - L360/X52 min 360 460 b - L390/X56 min 390 490 b - L415/X60 min 415 520 b - L450/X65 min 450 535 b - L485/X70 min 480 470 b - PSL2 L245N/BN
L245M/BMmin 245 415 b - max 450 760 b 0.93 L290N/X42N
L290M/X42Mmin 290 415 b - max 495 760 b 0.93 L320N/X46N
L320M/X46Mmin 320 435 b - max 525 760 b 0.93 L360N/X52N
L360M/X52Mmin 360 460 b - max 530 760 b 0.93 L390N/X56N
L390M/X56Mmin 390 490 b - max 545 760 b 0.93 L415N/X60N
L415M/X60Mmin 415 520 b - max 565 760 b 0.93 L450M/X65M min 450 535 b - max 600 760 b 0.93 L485M/X70M min 485 570 b - max 635 760 b 0.93 L555M/X80M min 555 625 b - max 705 825 b 0.93
LSAW Steel Pipe,LSAW Steel Tube,LSAW L360 Steel Pipe ,LSAW L485 Steel Pipe
HeBei GuangHao Pipe Fittings Co .,LTD (Cangzhou Sailing Steel Pipe Co., Ltd) , https://www.guanghaofitting.com