Best Welding Ground Clamp

10 Best Welding Ground Clamp Reviews – Buying Guide

A well-designed ergonomic ground clamp is every welder’s dream. Through time, manufacturers have come forward to make this dream come true. However, that has only increased the number of options for us to choose from, resulting in a strenuous selection process.

But don’t let that intimidate you because we’re here to solve that problem. Our reviews are meant to help you find the best welding ground clamp for yourself. All you need to do is go through each of the reviews to understand how it’s supposed to help your specific needs. So, let’s get started with the basics first.

10 Best Welding Ground Clamp Reviews

In the following section, you will find an assortment of handpicked welding clamps. Each of the clamps has its unique ways to satisfy users. We recommend you to go through all of them to properly comprehend which one suits your needs.

1. Lincoln Electric 300 Amp Grounding Work Clamp – KH525

Lincoln Electric 300 Amp Grounding Work Clamp – KH525

If you’re someone who’s looking for a clamp for small projects and outdoor tasks, then this thing is for you. Pairing it with a weld cable connector and cable unleashes its true potential. This isn’t even that hard because Lincoln accepts quite a wide range of cables.

The handlebar gap is about 4 inches, so you need a substantial amount of force to open the jaws. But the fun fact is that it’s not overbearing, so you can’t really coin it as overkill. So the spring tension is just the right amount to ensure a firm grip on your work but not so much that your hands will wear out.

And the bolt size on this product is a 10 mm tread. This means no more scavenging for rare aftermarket parts. All you got to do to replace your bolt is head to the local hardware store. All of these qualities complement each other, making it an appropriate grounding clamp for beginners.


  • Suitable for beginners
  • Works with no. 2 and 0 cables
  • Modern design looks sleek
  • Copper parts are almost twice as thick as other ends
  • Additional components are easily available in local hardware stores


  • Only the braid is copper plated

2. Hobart 400 Amp T-style Ground Clamp 770031

Hobart 400 Amp T-style Ground Clamp 770031

This clamp comes in an exciting T-style design that works perfectly for welding purposes. Hobart has managed to whip up an amazing resistance balance that can take on 400 amp without overheating. Less overheating means less hassle, and we all love an easy-to-use clamp, don’t we?

The only thing stopping it from becoming the best welding ground clamp in the market is its lack of contact area. When you put the clamp on your work, it doesn’t cover a lot of the surface. But the spring tension suffices for the grip accordingly. Therefore, the overall performance of the product is quite satisfactory.

You should definitely go for this clamp if you prioritize high amps over build quality. Other than that, the unique design stands out among all others in the market. Satisfied users have claimed that using this clamp enhances the reliability and performance of the welder by manifold.


  • Doesn’t overheat unnecessarily
  • Well balanced resistance
  • Rigid spring tension to ensure a tight fit
  • The substantial capacity of 400 amp


  • POC (Point of contact) surface area is very small

3. Lissam Welding Ground Earth Clamp Heavy Duty 300A

Lissam Welding Ground Earth Clamp Heavy Duty 300A

The key feature of this clamp is its compact nature. This makes it easy to carry anywhere without having to worry about weight. Primarily, we wouldn’t be looking for a clamp that’s small in particular. Because often we fail to realize how much of a difference it can make.

But don’t let its small size and structure fool you into considering it as weak. Despite being compact in structure, you’ll be able to use it for heavy-duty purposes as well. Since the jaw opening is not that wide so it bites hard on the surface that it’s clamping onto.

This thing comes with a hex wrench for the two set screws, so you can stop worrying about dreadful installations. So, if you’re someone who doesn’t have a lot of experience with clamp installations, you may consider buying this product. Lissam promises a great service apart from the amazing value for its price.


  • Compact and ergonomic design
  • Strong bite strength compared to its size
  • Comes with two set screws for easy installation
  • Great clamp for beginner welders
  • Budget-friendly and efficient


  • Jaw opening doesn’t open wider than 1.2 inches

4. Magswitch 600 Amp Ground Clamp 8100747

Magswitch 600 Amp Ground Clamp 8100747

With this thing at hand, forget about fiddling to find the perfect clamp spot. Magswitch clamps single-handedly take care of that difficult setup process. Not to mention the 600 amp capacity that doesn’t wear out, even at heavy usage. You will find everything starting from the ease of setup to ease of use in this clamp.

The most unique feature of this product is its fin design. This allows the users to clamp it vertically so that they can easily host a heavy ground cable with ease. And this thing is equipped with a magnetic strength of 15-20lbs, so it won’t fall off your work midway. Not even if someone decides to shake it!

However, the magnetic strength can vary a little when you pass the current through it. Although the loss of strength is negligible, we still expect an exact estimation from the manufacturers. Nevertheless, if you can rig this product in the right way, your life is bound to get easier!


  • Unique fin design to support vertical installation
  • Sufficient magnetic strength for rigid grounding
  • Compatible with heavy-duty cables
  • No heating issues
  • Extremely high amp capacity


5. HITBOX G Ground Welding Earth Clamp 400A

HITBOX G Ground Welding Earth Clamp 400A

This clamp allows users to go for steady and easier arc strikes. It’s also quite reputed among welders for the solid construction and build quality. Not to mention the extraordinary reliability of this thing. Once you’ve bought this product, you can confidently step away from any clamp purchase for a very long time in the future.  

Since this clamp does not use a spring to hold onto your work, so it won’t loosen even after several months’ use. Not only does it last long, but it’s also quite straightforward to use. The brass body will also assist you in reducing welding splatter. That’s always a handy feature to enjoy in any ground clamp for a welder.

Practically speaking, the three-way attachment system is probably its most amazing feature. In other words, you have three different ways to play around the set-screws while using this tool.


  • Doesn’t wear out/ loosen after heavy usage
  • Brass body is designed to handle welding splatters
  • Great build quality
  • Three different ways to set screw attachment


  • Limited range of compatible wires

6. US Forge Welding Heavy Duty Bronze Ground Clamp 300 Amps

If you asked us to describe this welding clamp in one word, we’d say it is flexible. No, it doesn’t mean that the clamp bends and twists (interesting concept alert!). This thing is actually flexible in its use and offers a wide variety of benefits to the users, making it an instant favorite among many users. It is one of the basic necessities of forge welding.

The sturdy build quality goes hand in hand with the 300 amp capacity. So if you’re a heavy user, you won’t have to worry about wearing the tool out through frequent use. The majority of users have reported that the spring on this thing is stiffer than any of its competitors.

While that means that the grip is going to be extremely strong, it also means that you’ll have to use more brute force than normal. If you have small or weaker hands than an average adult, then this product isn’t for you.


  • Strong clamp grip over the work surface
  • Significantly wider jaws than other clamps
  • Appropriate for users with large and strong hands
  • Sturdy build quality meant to last very long


  • Extremely stiff spring that can be hard to budge

7. Tweco 9205-1120 GC-200 Welding Ground Clamp 200-Amp

Looking for an efficient yet sturdy replacement for your factory grounding clamps? Tweco has got your back with their heavy-duty 200 amp clamps. This thing is quite a multipurpose trophy for a lot of welders due to their versatile approach to welding.

You can use this copper welding ground clamp for your stick and submerged arc welding neatly. Although the pipe welding ground clamp is optimized for medium and light duty fabrications, you can still pull off gas metal arc welding with it as well.

The spring tension of this product is neither too hard nor too soft. So every time you press on the handlebars for clamping, you’ll come across a smooth squeeze. This clamp offers it all while maintaining a decent grip on the work. This clamp is just the right thing for you, provided you have a moderate range budget.


  • Solid and reliable build quality compared to its price
  • Equipped with ballpoint screws to secure the cable
  • Balanced spring rigidity to ensure a firm grip on work
  • Entirely insulated spring


  • The jaw may sometimes fail to flat-clamp on works

8. KINGQ T-style Welding Ground Clamp 300-Amp

Imagine having a wide work-body without an actual flat surface to attach your ground clamp to. This T-style clamp has solved such problems through its captivating design, ergonomics, and the huge jaw width.

Under the circumstances above, any other competitor would fail to provide any solution. But KINGQ has been consistent in delivering their ground clamp with an ergonomic design for people with all levels of expertise.

But here’s the catch – the reason it can open so wide is its long handle structure. This means that it’s not exactly compact or lightweight in terms of build. As far as value is concerned, it isn’t super expensive nor cheap. So you can easily afford it as long as you have a mid-range budget.

However, despite having a long body, the contact areas are very small. This can make it quite frustrating. Sometimes when you’re in a rush and just want to get that work clamped, it’s going to get longer than you expect.


  • Moderate price range
  • Opens relatively wider than most other clamps
  • Good value for money
  • Reputed for diverse use among welders


  • Small contact areas

9. Hobart 770566 500-Amp Magnetic Ground Clamp

One of the many reasons why you might be interested in this product is its unique design. We must admit that it was a bold move from the manufacturers to step up their design to such a degree. But surprisingly, they haven’t done any nerfing on the efficiency. In other words, better design with no loss of ergonomics!

This thing works great on steel but not super efficient on aluminum, as you can tell by its construction. That shouldn’t be a problem as long as you only do moderate to small scale jobs. You’ll easily be able to do a 10 gauge work without facing too many complications.

To sum it up, this thing is best for works that you can’t easily put a clamp-on. Unfortunately, the magnet isn’t excitingly strong. It sure gets the work done, but if you’re looking for rigid magnet strength, then this is not for you.


  • Unique and ergonomic design
  • Appropriate for steelwork
  • Compatible for any heavy-duty works such as 10 gauge jobs
  • Easy to use and manage
  • For use where clamping isn’t possible


  • Magnet strength is not that great

10. Welding Magnet Head- Welding Magnet Head Fix Ground Clamp

We’ve all faced those situations where we can’t find a proper point to place our copper welding ground clamp. With this thing, you don’t need to worry about clamping points anymore. Just stick it vertically anywhere on your work and let it do its job.

Working with a painted body? Sticking this onto your work won’t chip off any paint at all. The clamp has a strong magnet and is extremely easy to use. If you’re a beginner, you may consider buying this as your first welding clamp, but remember that some expertise is advised. Not just flat surfaces, you can use this product as a replacement for traditional clamps as well. Due to its wide range of useability, it’s highly recommended on our list as a budget-friendly clamp.


  • Extremely budget-friendly
  • Satisfactory build quality
  • Strong magnetic strength
  • Reputed for its ease of use


  • Appropriate for novice and expert welders only

What Is a Ground Clamp Used for in Welding?

Ground clamps are an essential part of the arc welding setup. Apart from being a common safety practice among welders, it specializes in enhancing your workflow. Welders use these clamps to ground the workpiece so that all the current passes through it. The main objective being –

  1. Forming a full circuit
  2. Minimizing electrical resistance
  3. Reducing heat and energy loss for consistent welding
  4. Establishing an easy and proper workflow to ensure a better finish
Welding Ground Clamp

Not only do they enhance the quality of your welds, but they play a huge role in grounding the electrical circuit as well. When you conduct this grounding, you’re actually making sure that the welder and the earth both have the same potential. Wondering what harm a variable potential can do? Well, electrocution!

Several factors come into play during ground clamp welding. However, you’ll have to connect the clamp to work directly or via a conductor like the work-table. These equipment are a part of a big circuit. Therefore, they are most capable of taking sufficient current-load without heating.

What Happens if You Don’t Ground a Welder?

Every welder has come across this one question, at least once in their lifetime – ‘Is it possible to weld without grounding?’ Normally you can’t (other than some exceptional cases). Even if you can, you’ll still be risking your safety by a great deal here. Not just yours, but that of others around you as well.

Apart from the welding safety hazards, an ungrounded welder can also damage your precious tools. Imagine having to buy a new welding set just because you forgot to attach a metal clip to your work! Certain situations may lead you to jeopardize the valuable work that you spent hours perfecting.

When you skip the grounding part, you’re no doubt unaware of the charge neutrality. The chances are that the circuit isn’t even complete. This implies that your arc won’t even work in the first place. And if you’re not insulated yourself, it’ll also put you at high risk of getting electrocuted upon spark.

So if you don’t use a ground clamp for welder, there’s a high chance that you, yourself, might become that ground. So the current will pass through you instead of the clamps, causing electrocution! Now here’s the thing, you’re not bound to face these repercussions, but it’s not worth the risk. You have our word on that.

What to Look for before Buying?

Before you head to your local hardware shop to get your hands on a ground clamp, there are a couple of things you need to notice about it. These key pointers are going to be crucial in helping you understand which is better than which and why –

Wiring and Amp Capacity

Take note of the size of the cable on the ground clamp welder. A cable with a sufficient cross-sectional area is always a good pick. Although you can make do with smaller cables as well. If your clamp is a 200 amp one, then the flow will require at least a no. 2 cables or larger. So, choose your amp variation accordingly.

Spring Strength

The strength of the spring determines how strongly the clamp will attach to your metal-work. This means that the stronger the grip, the secure the circuit. However, a spring that is too strong will unnecessarily wear your hand out.

Jaw Opening

Test the jaws of each clamp before purchasing. Keep the thickness of your workpiece while in mind doing so. Try to select the clamp whose maximum jaw-width is nearly double the thickness of your metal-work.

Welding Ground Clamp

Attachment Style

How is the cable attached to your clamp? Is it a screw-in system or bolt-in system? Does it have the strain relief hole for the copper wire? All of these answers will directly affect your clamp output.

POC Area

According to hardware terminologies, POC refers to the ‘point of contact’. It’s the part of the clamp that remains in contact with your workpiece. Wider POC area means a better grip, resultantly a better flowing circuit. Consider getting the curved POC clamps for rounded objects.

Frequently Asked Questions

Here we have the most commonly asked queries regarding the best welding ground clamps:

1. What is the best place to put a ground clamp?

The ideal place to put a ground clamp is the base of your work. And the best place is usually anyplace close to the region you are welding. Just make sure that you don’t clamp it onto anything that’s leaning against a wall.

2. Are there any risks involved in using a ground clamp?

Yes, any welding job involves a moderate risk if you don’t know what you’re doing. Make sure you’re not working in a poorly ventilated area and that your work is pre-heated for you to weld.

3. What are the appropriate safety gears for welding? Are they really necessary?

Proper safety gear while working is the first and foremost prerequisite of welding. It may slow down your mobility but always remember to wear your welding helmet with the lens, welding gloves, and jacket.

4. Can I alter the physical mechanism of my clamps?

If you have enough expertise, you may pull it off at the cost of a voided warranty. However, we do not recommend structural operations. Instead, just buy another one that suits you better.

5. What is a ground clamp?

Yes, this is an important question because the ground clamp is not what it sounds like. The Ground clamp is not actually the grounding or earthing of your electrical circuit. Rather it acts like the neutral wire that completes the electrical circuit of your welder.

6. Do you need a ground clamp when welding?

The name might be making it look unnecessary to someone who has never welded. Because, the grounding clamp is not actually the part in the circuit which is physically connected to the ground. It is the neutral half of the circuit without which the circuit cant be completed. Hence, without grounding you wont be able to weld at all.

7. What type of welding clamp do welders use?

There are many types of welding clamps for various welding needs. Here are the most popular of them-

  • Large jaw sheet metal clamps
  • Locking clamp
  • Magnetic clamp
  • Dimide clamp
  • F-clamps
  • Pipe clamp
  • Kant-twist clamp
  • bench clamp
  • Edge Clamp
  • Table clamp

8. How do you use a welding ground clamp?

First off all, make sure that the work cable is smoothly secured with the nut and bolt of the work clamp. There shouldn't be any strain after the relief hole.

Then you can connect it to your work piece or the metal plate you are working on. Clamp it as close as possible to your welding area. Make sure you have a strong connection and there is no defect in the clamp like corrosion, rust, or a loose spring. Then again, the process of using your clamps can change with the welding type.

9. How do you make a good grounding for welding?

The first step for a good ground is to get a high quality grounding clamp which is suited for your welding type. Then the question comes that where do you put the ground clamp when welding?

Grounding directly to your work piece is the best option. If you are grounding it on your table then clamp it as close as possible to the work. Also, make sure that it is not leaning against any wall. I hope now you know where do ground clamps go when welding.

10. Is the ground clamp positive or negative?

Welding ground clamps can be both negative and positive depending on your welding type.

11. Are brass ground clamps better?

Brass is one of the best material for welding ground clamps. A copper welding ground clamp is the best when it comes to electrical conductivity. And brass is an alloy of copper which can conduct with 70%-95% efficiency depending on the alloy structure.

12. How do you replace a welding ground clamp?

Replacing the clamp itself is not a big deal. You just have to remove cable lug that is securing the grounding cable and pullout the cable form the cable hole of the handle. Than you can reverse the process with a new clamp. However, the process can differ slightly with different types of welding ground clamps.

13. What are welding ground clamps made of?

Grounding clamps are almost always made of copper alloys. But the clamp handles and other parts of the tool could be made of steel or any other kind of metals with a rubber or any other type of non-conductive materials as a cover.

Final Words

Low on budget? Get the ‘Welding Magnet Head’. But if you’re thinking of that sweet upgrade to something premium, go for the Lincoln Electric KH525. Don’t like the hassle of clamping? Then the best welding ground clamp for you is the Tweco 9205-1120. Now you know everything to get yourself that perfect pick!

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