How many meters should be the cable sampling, and how many meters the cable needs to be sent for ins

I have been engaged in cables for decades, and I have not heard of wire and cable "energy-saving testing", and there is no such item in all projects of wire and cable testing, and there is no relevant testing standard.

50 meters for sampling below 10mm2 and 30 meters for sampling above 10mm2.

Regarding wires, the inspection basis of cables:

1. "PVC insulated cable with rated voltage of 450 750V and below" GB5023-1997

2. "PVC insulated cables, wires and flexible wires with rated voltage of 450 750V and below" JB8734-1996

3. "Rubber insulated cable with rated voltage of 450 750V and below" GB5013-1997

4. "Copper core lead core plastic insulated power cable with rated voltage of 35kv and below" 12706-91

Inspection items: conductor resistance, withstand voltage test, insulation resistance, structural size inspection, mechanical performance test and mark inspection before aging.

Sampling range: only the wires of 220 380V power lines of 50mm2 and below are sampled and sent for inspection, and the rest should be decided according to the actual situation whether to sample or the batch of sampling.

Sampling batch: according to the same manufacturer, the number of materials of the same specification and model is sampled as the base, the number of materials (length) is 10,000m and below to take a group of samples, and more than 10,000 meters are sampled by 20,000 meters, but the number of samples is not less than two groups.

Summary. Dear, I'm glad to answer your answer: how many meters of cable needs to be sent for inspection:

Not every specification. It would be good to take 1 2 specifications for one model unit. The length of the sample depends on the test item, and is generally not less than 3 meters.

All specifications and models must be retested, and the number of groups retested must be noted, and it is very troublesome when the number of groups is not enough to submit information. You can check the wire and cable inspection regulations in GB 50411-2007, which clearly states: "Inspection quantity:

10% of the total number of specifications of the same manufacturer, and not less than 2 specifications. "Sampling below 10 square millimeters is 50 meters. 30 meters of sampling above 10 square millimeters.

How many meters a batch.

Dear, I'm glad to answer for you A: How many meters of cable needs to be sent for inspection: not every specification.

It would be good to take 1 2 specifications for one model unit. The length of the sample depends on the test item, and is generally not less than 3 meters. It is necessary to retest all specifications and models, and you must pay attention to the number of groups for retest, and it is very troublesome when the number of groups is not enough to submit information.

You can check the "GB 50411-2007" in the source of the wire and cable inspection regulations, there is a clear: "inspection quantity: 10% of the total number of early specifications of the same manufacturer, and not less than 2 specifications."

1. "PVC insulated cable with rated voltage of 450 750V and below" GB5023-19972、

How many meters a batch, there must be how many meters.

Pro, the cable is sent for inspection for 20 meters as a batch.

For example, a batch of 5,000 meters or a batch of 10,000 meters.

Cables of wires.

Dear, this cable is sent for inspection 20 meters is considered a batch.

A group of 20,000 meters was sampled.

The same specification and model.

The number of materials is sampled as the base number, and a group of samples is taken if the material quantity (length) is 10,000 m and below, and a group of samples is taken according to 20,000 meters above 10,000 meters, but the number of samples is not less than two groups.

Inspection items: conductor resistance, withstand voltage test.

Insulation resistance, structural size inspection, mechanical performance testing and marking before aging and other inspection sampling range: only 50mm2 and below 220 380V power lines for sampling and inspection, the rest should be based on the actual situation to decide whether to sample or sample batch sampling batch Wu Xiang type: according to the same manufacturer entering the site.

Wire and cable precautions.

The cable is strictly forbidden to come into contact with acids, alkalis and mineral oils, and should be stored in isolation from these corrosive substances. There shall be no harmful gases that damage the insulation of the banquet book and corrode the metal in the warehouse where the cable is stored.

During the storage period, the cable should be rolled regularly (once every 3 months in summer, and can be extended as appropriate in other seasons). When rolling, roll the edge of the plate facing upwards to avoid the bottom surface being damp and rotting. Always pay attention to whether the cable head is intact when storing.

Kiss! Hello, happy to answer your <>

Pro-cable inspection regulations: 10mm2 below the sampling of 50 meters. 30 meters of sampling above 10mm2.

Cable (diàn lǎn) 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, and the entire outer bread wheel has a highly insulated covering; Specifically refers to the definition of a submarine cable1: A wire made of one or more mutually insulated conductors and an outer insulating protective layer that transmits electricity or information from one place to another. Definition 2:

It is usually a rope-like cable made up of several or groups of wires (at least two in each group), each of which is insulated from each other and is often twisted around a center, with a highly insulating covering on the outside. The cable has the characteristics of internal energizing and external insulation. Hope mine can help you <>

Do you have any other questions?

Hello dear, for cable inspection, it will generally be carried out in accordance with the following regulations: 1. Each type of cable should be sampled for at least 50 meters; 2. The length of the cable for sampling is calculated according to 10 of the total amount; 3. The sampling cable should be within a certain distance, such as every 50 meters; 4. According to the working conditions and use environment of the cable, the number and length of the buried sampling inspection can be appropriately increased; 5. Before laying, the cable shell should be scratched to accompany the ants, so as to check the construction quality of the cable inside.

How many meters should be sampled for power cable inspection?

Dear, hello, I am happy to answer for you the power cable inspection, how much should be sampled to call the touch meter? A: 10 square millimeters of imitation orange below the sampling of 50 meters. 30 meters of sampling above 10 square millimeters.

Relevant basis: 1. "PVC insulated cable with rated voltage of 450 750V and below" GB5023-1997; 2. "PVC insulated cables, wires and flexible wires with rated voltage of 450 750V and below" JB8734-1996; 3. "Rubber insulated cable with rated voltage of 450 750V and below" GB5013-19974. "Copper core lead core plastic insulated power cable with rated voltage of 35kv and below" 12706-91

"Sampling below 10 square millimeters is 50 meters.

30 meters of sampling above 10 square millimeters.

1. "PVC insulated cable with rated voltage of 450 750V and below" GB5023-1997

2. "PVC insulated cables, wires and flexible wires with rated voltage of 450 750V and below" JB8734-1996;

3. "Rubber insulated cable with rated voltage of 450 750V and below" GB5013-1997

4. "Copper core lead core plastic insulated power cable with rated voltage of 35kv and below" 12706-91