Why Kalas GenFlex™ Type W is the Power Cable You Want

At Kalas, we understand that choosing a Power Cable for your heavy-duty applications is a serious decision. Whether you are powering generators for disaster relief, equipment for mining, large outdoor productions, active facilities, or other high-stakes situations that require consistent reliable power, there’s a lot on the line if your power fails. Your power cables and systems need to be able to withstand environmental factors and extreme use. Before selecting the type or brand of cable you choose to power your end-use, you need to find a cable you can trust with all you put it through.

That’s where Kalas GenFlex™ Type W Power Cable comes in. Let us explain why we believe our Type W Cable is the brand you want when making your selection for purchase.

What is Type W Power Cable?

Before we get too deep into why you would choose Kalas’ Type W Power Cable over the rest, we don’t want to assume you know the ins and outs of Type W Power Cable. Type W Power Cable is basically a heavy-duty cable. What makes it different than other Industrial Power Cables and Cords is its ability to power extreme uses. Type W Power Cable generally consists of bare copper conductor core insulated with Ethylene Propylene (EP) and jacketed with Chlorinated Polyethylene (CPE) which results in a cable that is flexible, durable and can maintain it’s properties in extreme temps, weather and compression. Perhaps this isn’t new information and you already are familiar with Type W Power Cable and what it’s generally used for. If that’s the case, all we need to share is why would you choose Kalas’ GenFlex™ Type W Power Cable before it’s the competition? We’re glad you asked.

Why Choose Kalas GenFlex™ Type W Power Cable?

When it comes to Kalas’ Type W Power Cable, we give you not only the basics of reliable construction but peace of mind as you can trust you’re receiving a quality that outlasts the competition.

Complete Quality Control

First, we make every one of our wires & cables from scratch in-house. That means from the very start we get to control the quality of your cable and can vouch for each inch of it. We order our own copper rod and draw it to the precise stranding your cable requires all while assuring it to be defect-free and as conductive as possible. Next we go through extensive quality testing before selecting insulation and jacketing suppliers to assure our customers will receive a product that lives up to and exceeds expectations with which it’s purchased.

Tested and Proven for Durability

Before rolling out any product, we put it through extreme testing. Our GenFlex™ Type W Power Cable has been tested and proven to meet the requirements of UL Subject 1650; CSA PPC 22.2 – 96 and the MSHA Flame Test. It’s tested and proven to be rated for use in accordance with National Electrical Code (NEC) article 400 and NFPA 70 such as used in generator leads, battery leads or motor leads, heavy-duty, or temporary power supplies and light to medium duty mining applications. When you buy Kalas’ GenFlex™ Type W Power Cable, you also buy assurance that your cable will hold up to and resist abrasion, sunlight, chemicals, oil, and water offering you superior cable life in the harshest environments. Because of the quality of our Type W cable, it’s also rated to temperatures of -40°C (-40°F) to 90°C (194°F wet or dry), so even in extreme temperatures, you’ll be able to rely on our Type W remaining consistent and flexible to move with ease without compromising conductivity.

Trusted history

At Kalas, we come backed by a 60+ year history in cable manufacturing. It’s not something we rest our laurels on either. It’s a 6+ decade history of excellence, continuous improvement, and reliable partnerships with each and every customer. When you buy Kalas, it is our commitment that you know you also buy quality and expertise. Our engineers and production associates are highly trained and backed by vetted experience which directly goes into the quality of the cable you buy. Quality and expertise matter – especially when your need to rely on power in critical situations as with Type W Power Cable.

Customization & Options 

One of the huge perks of buying from Kalas is the number of capabilities you can choose because we are a fully integrated manufacturer with facilities that can do it all. With GenFlex™ Type W Power Cable, you have the choice of ordering 4/0 – #8 gauge which comes sequentially printed with our PermaPrint™ indent print that remains visible & lasts a lifetime even with extreme use. Our GenFlex™ Type W Cable we stock 4/0, 2/0, 1/0, and #2 on 2,000’ put-ups making your order in that quantity ready to ship out the door fast while we also offer custom lengths to suit your exact needs. Simply as for made to order when you contact us


If you’re still reading, that means you’re probably in the market for Type W Power Cable or will be someday and are taking your decision of where to purchase seriously. We fully respect and value that, believing reliable, quality power should be what everyone receives when they purchase power cable. Sadly, we know that’s not always the case. So we are here to assure you that it is possible to buy a Type W Power Cable that is reliable, durable, and a cut above the rest in purely sending power where you need it to go. If you have any questions at all about GenFlex™ Type W Power Cable please reach out so one of our kind informed customer support team members can ease your mind and help you more fully understand how our cable can support your work. If you’re ready to begin your journey of buying the highest quality cable while receiving excellent service, you can fill out our request a quote form today.  

Visit our GenFlex™ Type W Power Cable web page to read deeper into features and specifications.  

For related products and information you can visit:

We look forward to serving you and providing you a better cable for your heavy-duty power needs! Be prepared for the next storm, gig, power outrage, mining job, and more by starting your ordering or inquiry today. 

Type W Portable Power Cable

GenFlex™ Type W Cable Gauges

We manufacture 4/0 – #8 gauge so you can order the gauge that suits your need

Type W Power Cable with Indent Print Sequentially Marked

PermaPrint™ Indent Print

GenFlex™ Type W Power Cable comes standard with our PermaPrint™ indent print that lasts a lifetime even in extreme use. 

Kalas Type W Sample Kit Cable

Request a Sample

As we said, we realize ordering Type W Cable is a big decision. Order a sample so you can see the quality up close. Ask us today. 

Kalas Foundation Purchases Hand Sanitizer for Donation to Local Organizations

The Kalas Foundation was established in 2009 to ensure a steady stream of financial assistance remained available – in good times and bad – to support the agencies throughout the communities in which the associates of Kalas Wire & Cable lived and worked. At the onset of the Covid-19 pandemic, we decided to prioritize our 2020 disbursements specifically to causes & people impacted by the virus and preventing its spread.

Most recently, we have purchased 500 gallons of hand sanitizer and filled 900 bottles for their distribution. Pictured below, is our recent donation to Declaration House and Real Life Ministries, who were grateful to have the ability to safely distribute food to families in need. The Kalas Foundation is honored to be able to partner for this very worthwhile community cause.

If you should have a request for hand sanitizer for a community organization in Lancaster or Berks counties, please email KYM at kcalabretta@kalaswire.come or RACHEL at rlheisey@kalaswire.com and together, we can improve the lives we touch!

The Kalas Foundation
Kalas Foundation donates hand sanitizer
Kalas Foundation donates hand sanitizer

The Most Flexible Welding Cable

We pride ourselves in being the manufacturer of the industry’s best welding cable, ToughFlex, and the reasons that cable continues to be the best-selling cable on the market. Many of those qualities overlap onto our other welding cables – such as drawing our own copper for superior material control you can trust, having over 60 years of history in manufacturing cable to perfect ours for higher quality and our vigorous testing regimens we put all products through to create products you can thoroughly rely on. In this post, we want to share about our sister to ToughFlex™ – FlexWhipFlexWhip is our most flexible welding cable. Where our standard, ToughFlex is already extremely flexible, FlexWhip takes it even further.  

What Makes FlexWhip™ Flexible? 

The major difference between ToughFlex and FlexWhip is that ThoughFlex is a 30 (0.010) gauge bare copper conductor whereas FlexWhip we draw down even finer to Class M stranding which is 34-gauge bare copper conductorThe design of FlexWhip welding cable provides superior flexibility when needed where leads, stingers/ whips, and grounds are used.  

Flexible, but also Durable? 

Our process of heating the copper rod and drawing it, allowing it to cool slowly, removes internal stresses and toughens it while increasing its flexibility through how fine a gauge we make the copper strands. The result – a cable you can twist, bend, and move with ease because of its High flexibility which can equally withstand the harsh environments welding can often require.  

Safety is a big deal when it comes to selecting the welding cable you choose, and we take that seriously. We understand that the more flexible and fine copper strand becomes, the more assured customers need to be of the cable’s safety. There are serious safety issues if stranding is uneven, too thin, or prone to break, which definitely needs to be understood by the manufacturer you choose to buy a product like this from. That’s why we share with all of our customers the vigorous testing FlexWhip undergoes and the certifications it holds to assure its safety, reliability, and durability 

What Makes FlexWhip™ Better than the Competition? 

It took us years, but through vigorous testing and refining, we have created an extremely flexible yet just as durable welding cable that touts unmatched reliability compared to the competition in the market. Combine that with our numerous customization options, Kalas’ 60+ year history of manufacturing and our excellent customer service and you have a product that rises above the other options.  


Here’s what gives FlexWhip it’s sustained durability. First, it is insulated with a high-grade RoHS compliant EPDM (Ethylene Propylene Diene Monomer) jacket proven to resist cuts, tears, abrasion, grease, oil, water, and flame. It also has a paper separator to enhance stripability. FlexWhip™ has an operating temperatures range from -50°C to + 105°C, is rated to 600 Volts, and meets the National Electrical Code article 630 for electric welders and UL VW-1 flame test outlined in UL1581. It’s our hope that that provides the fool-proof assurance you need when selecting your flexible welding cable that you’ll receive a reliable product every time you buy FlexWhip. 

Customization & Options: 

We offer FlexWhip in gauges, #2 – 2/0, in the industry-standard orange jacket signifying flexible whip cableFlexWhip is 250 ft. and 500 ft. Reels, making those lengths easy to ship and get in-hands quickly while also offering custom lengths upon request. Each cable is sequentially marked with the option to customize the print legend and even use PermaPrint™ indent print which will not wear off. We offer custom packing of all welding cable giving you the option to purchase cable coiled, boxed, or shrink-wrapped in 25, 50, or 100 ft. Lengths. And one of the things that makes us unique, is we also offer fully finished assemblies. You can order FlexWhip in the unique configuration your work requires with Lenco & Tweco connectors creating the custom assembly you desire. 


We hope that reading through this helps you understand the difference between FlexWhip and ToughFlex while also revealing several reasons why FlexWhip rises to the top when it comes to selecting flexible whip cable. If you have any questions about FlexWhip or any other product we sell, reach out and one of our kind, intelligent proactive customer support team members will get back to you quickly. If you’re ready to begin your journey of better cable and service, you can fill out our request a quote form today.  

Visit our FlexWhipinformation and read our product data-sheet.  

Visit our Welding Cable Industry Pages for More Information:

We look forward to serving you and providing you a better cable and ordering experience! 

FlexWhip™ REel

FlexWhip™ Welding Cable

We stock 250 ft. and 500 ft. reels, making orders in those increments extremely easy to ship right out the door quickly including cut lengths in 25’ increments.

FlexWhip™ The Welding Industry's Most Flexible Orange Welding Cable

Welding Cable Assemblies

We offer full-service completion of assemblies so customers can buy finished whips, leads, and grounds right from us in a wide array of welding connectors from top brands such as Lenco and Tweco.

Colored ToughFlex™ Welding Cable


FlexWhip™ comes in #2 – 2/0 and a vast array of possibilities for customization. Custom lengths, print legend, packaging, and more.

Kalas Receives Bronze Level Supplier Quality Excellence Process Award from CAT

Kalas is honored to receive, from our valued partner Caterpillar, the Bronze Level Supplier Quality Excellence Process (SQEP) award in 2020. Kalas provides cable products that power Caterpillar equipment around the world and across a variety of vehicle platforms.

Caterpillar’s SQEP certification recognizes their supplier’s dedication to providing superior quality and is only awarded to companies that demonstrate measurable world-class performance on an ongoing basis. Each year, suppliers are evaluated with increasingly strict criteria for distinguishing outstanding supplier quality performance, exceptional service, delivery performance and continuous improvement.

We are grateful for the opportunity to service Caterpillar as a trusted member of their strategic supply plan, and it is with pride that we accept this prestigious award and commit to upholding the standards which achieved it.

Ready to learn more or start to order your superior quality cable products?

Visit our Bulk Wire & Cable Products to learn more about each industry we serve with bulk wire & cable. Visit our Terminated Battery Cables section of our website to learn the capabilities we offer. The options are endless. We are able to create the exact cables you need with the quality that gives you peace of mind and the customer service that helps every step of the way.

Questions? Reach out through our Contact Us form. If you’d like to inquire about specific products and receive a quote, fill out our Request a Quote Form. We look forward to serving all of our customers as thoroughly as we serve CAT while consistently improving for better and better service! 

Do You Have Questions About Kalas or Our Products? We'd love to help.

Let us know what you need & how we can serve you best. We love new challenges and are able to create the wire or cable product you need. Reach out today!

Industry’s Best Welding Cable

We know it’s a tall claim – claiming our ToughFlex™ welding cable is the industry best. We stand behind that statement, and by the end of this article we are confident you will too.

What Makes Up a Quality Welding Cable?

When it comes to welding, there are many critical qualities important for choosing the best welding cable for your job.


EPDM jacket resists cuts, tears, abrasion, grease, oil, water, and flame.


National Electrical Code Article 630 electric welders. Operational temperature ranges from -40C to 105C. Meets UL VW-1 flame test as outlined in UL1581.


High quality annealed 30-gauge bare copper conductor.


A combination of our copper stranding and EPDM jacket allows superior flexibility.


What Makes ToughFlex™ The Industry’s Best Welding Cable?

ToughFlex™ meets all the criteria above plus more which we will share here. This is why we believe it’s also continued to be the best-selling welding cable available.

First, ToughFlex™ is extremely durable. It is jacketed with an EPDM (Ethylene Propylene Diene Monomer). This synthetic rubber jacket excels in resistance allowing ToughFlex™ to prevent cuts, tears & abrasion and withstand grease, oil, water, and flame.

Second, ToughFlex™ undergoes intense testing and analysis proving its safety for welding. ToughFlex™ is rated to 600 Volts, meets the National Electrical Code article 630 electric welders, and UL VW-1 flame test outlined in UL1581. Along with the extensive testing, Kalas’ has more than 60 years in manufacturing copper wire & cable, touting a history of expertise. Therefore we are able to put our customers’ minds at ease by knowing they are receiving a product manufactured by experts in the field.

One of the top reasons ToughFlex™ is the best welding cable is its conductor – our copper. It’s Annealed 30 (0.010) gauge bare copper conductor with class K stranding. We start with 5/16” copper rod and with our rod mill we are able to draw down the copper to a finished gauge ready for jacketing. This gives Kalas complete control of the quality, efficacy, and craftsmanship of each product. The fine Annealed 30 gauge (0.010) bare copper conductor makes ToughFlex™ extremely flexible and easy to work with, coil and store. At Kalas, we are proud of our manufacturing process and the complete control it offers to our customers.

Lastly, something Kalas offers through owning the manufacturing process of our cables – is options in lengths, colors, packaging, finishing, and more. ToughFlex™ comes in #6 – 250MCM and virtually endless possibilities of customization. We offer ToughFlex™ in the standard black along with Blue, Green, Red, and Yellow jacket colors. We stock 250 ft. and 500 ft. reels, making orders in those increments extremely easy to ship right out the door quickly including cut lengths in 25’ increments. We also offer full-service completion of assemblies so customers can buy finished whips, leads, and grounds right from us in a wide array of welding connectors from top brands such as Lenco and Tweco. We also offer custom packaging for distributors – uncrushable boxes, coils in shrink wrap bags, and large reels. We also offer custom print legend and even indent print which will not rub or wear off.

So, whether you are looking for a custom assembly cut and ready to weld, or bulk welding cable you can use for various applications, we are here to support you. Reach out to our customer support team who are ready and able to support every need large and small. Have questions? Fill out our contact form and our sharp team members will answer them. Ready to have welding cable you can trust to do the job, suit your needs, and not fail you? Reach out through our request a quote form today!

We look forward to supplying your welding cable needs and satisfying your desire for a cable that is better than the rest!

Kalas ToughFlex™ Reel

ToughFlex™ Welding Cable

We stock 250 ft. and 500 ft. reels, making orders in those increments extremely easy to ship right out the door quickly including cut lengths in 25’ increments.

ToughFlex™ Kalas Welding Cable

Welding Cable Assemblies

We offer full-service completion of assemblies so customers can buy finished whips, leads, and grounds right from us in a wide array of welding connectors from top brands such as Lenco and Tweco.

Colored ToughFlex™ Welding Cable

Colored Welding Cable

ToughFlex™ comes in #6 – 250MCM and virtually endless possibilities of customization. Available in the standard black along with Blue, Green, Red, and Yellow jacket colors.

Foundation Makes Masks for All Associates Possible

The Kalas Foundation is proud to share their latest initiative in response to the outbreak of Covid-19.  In an effort to ensure the safety & protect the health of our valued associates, the Foundation has partnered with the local Lancaster Unit of Mennonite Disaster Service (MDS) to offer free, handmade masks to all Kalas employees. The team of 20 volunteers from MDS has been producing 21,000 masks every 72 hours – and all complete while safely practicing social distancing!

The Kalas Foundation began distributing the masks Wednesday, April 15, right before the statewide announcement that face coverings would be mandatory to all Kalas facilities throughout Lancaster and Denver, PA. We are grateful for the prompt response and call to action of all the MDS volunteers: cutting fabric, sewing masks, collating orders and delivering masks to nursing homes, daycare centers, hospitals, businesses and private households.

Mennonite Disaster Service is a volunteer network that responds to provide relief to disaster events throughout the United States and Canada. The local Lancaster Unit is based out of their Lititz, PA location, but the mask effort extends throughout the country. For more information or to lend your support, visit https://mds.mennonite.net/covid-19-volunteers-in-action/

The Kalas Foundation is grateful to lend its support to MDS and extends HEARTFELT THANKS for the good work they are doing to keep people healthy!