| Type: | Insulated |
|---|---|
| Conductor Type: | Solid or Stranded |
| Application: | Housing Used |
| Conductor Material: | Copper |
| Sheath Material: | PVC or Nylon |
| Insulation Material: | PVC or Nylon |
| Customization: |
|---|
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What is Welding Cable?
The 2014 National Electric Code© (NEC) Article 630 Electric Welders defines welding cable as cable designed for use in secondary circuits of electric welders.1 Welding cable typically consists of a single, finely stranded conductor that ranges in size from 8 AWG to 500 kcmil and a single layer of EPDM or neoprene thermoset insulation with an operating temperature rating of 90°C or 105°C. Welding cable is thermoset (as opposed to thermoplastic) to better resist weld splatter. The cable is typically rated 600 volts but can also be rated 100 volts. Welding cable is known for its flexibility and durability, and many automatic and manual welding applications require the cable to hold up to repeated movement over rough surfaces.
Welding Applications
The two main types of electric welding, as defined in NEC 2014 Article 630, are resistance welding and arc welding. In both welding types, welding cable is used to power the electrode.
Resistance welding is the process where heat used for fusing two overlapping metals together is generated from the resistance of the materials. The metals are placed between two electrodes (also known as welding points) and low-voltage, high-current electricity is passed from one point to the other. The metals resist the flow of the current and the resulting heat fuses the metals together.
Arc welding is the process of using a welding power supply to create an electric arc between the base material (also called the work piece) and the electrode. The electric arc melts the electrode and the remaining metal is used in the weld. The arc is sustained by blowing an inert gas such as argon between the electrode and the weld surface.
Welding Cable Ampacity and Sizing
Ampacity, also known as current-carrying capacity or current rating, is the maximum amount of current that a cable can safely carry without exceeding its operating temperature rating due to the heat generated from losses and ambient heat around the cable. Welding cable ampacity is a common source of confusion because it is calculated differently than other types of wire and therefore appears to have a higher ampacity than products such as building wire or tray cable, but these ampacities are for welding applications only. When done correctly, cable size selection for welding cable takes into account factors like welder output power, duty cycle and the circuit length.
The rated output of the welding power supply determines the maximum current the power supply will draw during operation. The cable must be sized to handle the maximum current.
Duty cycle is a capacity rating of a welding power source. The duty cycle is the percentage a power source can operate at a given output current level for a 10-minute span without exceeding its thermal limit.2 If output levels decrease, duty cycle increases until it reaches 100 percent continuous output. The duty cycle rating can be found on the power source's nameplate or in the manufacturer's manual.
The welding circuit is the complete path electricity will travel in a welding application. The circuit typically consists of the welding power supply, the electrode, welding cable and the work cable. The total length of the welding cable and work cable is calculated to determine the circuit length. Ampacity ratings decrease as the length increases due to the additional resistance of longer cable.
The type of welding machinery can impact the duty cycle. The welder's intended use (light, medium or heavy), if it's single phase or three phase, and voltage rating will change the duty cycle rating. NEC 2014 Article 630 Electric Welders Part II Arc Welders and Part III Resistance Welders have different requirements for specifying duty cycles and ampacity.
Cable manufacturers or welding textbooks can provide recommended gauge sizes for welding applications. End-users select the welding power supply's rated output, duty cycle and the circuit length to determine the correct cable size. Table 1 is an example of a welding cable sizing chart.
|
Welding Machine Rating (Amperes) |
Duty |
Lengths |
Lengths |
Lengths |
Lengths |
|
100 |
20 |
8 |
4 |
3 |
2 |
|
180 |
20 |
5 |
4 |
3 |
2 |
|
180 |
30 |
4 |
4 |
3 |
2 |
|
200 |
50 |
3 |
3 |
2 |
1 |
|
200 |
60 |
2 |
2 |
2 |
1 |
|
225 |
20 |
4 |
3 |
2 |
1 |
|
250 |
30 |
3 |
3 |
2 |
1 |
|
300 |
60 |
1/0 |
1/0 |
1/0 |
2/0 |
|
400 |
60 |
2/0 |
2/0 |
2/0 |
3/0 |
|
500 |
60 |
2/0 |
2/0 |
2/0 |
3/0 |
|
600 |
60 |
3/0 |
3/0 |
3/0 |
4/0 |
|
650 |
60 |
3/0 |
3/0 |
4/0 |
--- |
4.Factory
Henan Hongda Cable Co., Ltd. located in No. 3, Changping Road, ZhanDian District, Jiaozuo, Wuzhi. Our factroy established in March of 2004. Our owns registered capital of RMB Fifty-one million six hundred and eighty thousand. Hongda Cable
covers an area of 100,000 square meters, including 50,000 square meters of building area. We have more than 120 staff members and professional workers. our fixed assets of 90,000,000. We can provide more than 100 varieties, tens of thousands of specifications of wire and cable, with 10000 km annual production capacity
Henan Hongda Cable Co. Ltd. is the original Zhengzhou Hongda Cable Co. Ltd. established enterprise expansion. The company is committed to system R&D, design, manufacturing, marketing and service of cable products,We mainly aim at managing cross-linking XLPE insulated power cables, PVC insulated power cables, plastic insulated control cables, insulated overhead cables, and stranded aluminum and ACSR. At present, the cables' biggest cross area is 800 square meters with a maximum electric power of 35KV. The company has more than 300 (sets) domestic and oversea-leading production and testing equipment
5.Packing and Transportation
We provide you with the best product packaging design services, thereby allowing you to save more shipping charges
6.Certificate
7.FAQ
Q: Are you the factory or the trading company?
A: We are the factory.
Q: How long is your guarantee Period?
A: We uaually offer 1 year guarantee for our general products.
Q: How can I get the samples?
A: We can make the sample order. And usually we will charge for it.
But the samples fee will be return to you when you make the bulk order.
Q: Where is your factory? How can we visit your factory?
A: Our factory located in Zhengzhou city, Henan Province. You could reach here by train and by air.
We can pick you up in the airport and the railway station.
Q; What is your MOQ?
A: It`s base on the cable type or wire type. Please contact me. We will let you know.
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