Grounding is a critical safety measure to take when engaged in any craft that involves high voltage electricity – including welding. So does that mean that welding tables should be grounded? Let’s take a look.
If you want the short answer as to whether or not to ground your ground table, it’s YES – welding tables should always be grounded to prevent voltage leakage from the output leads.
Whenever working with high voltage electricity, grounds prevent electricity from arcing and finding…well, YOU (since you conduct electricity quite well!). While you are unlikely to be electrocuted if your table is not grounded, you can receive a nasty shock that you won’t soon forget.
Although it is technically possible to weld without grounding the welding table, the risk of shock and damage to nearby electronic equipment just make it not worth the risk – not to mention the fact that you’ll get inferior welds due to subpar current delivery.
Most manufactured welding tables include a ground clamp – usually as part of their welding circuit. However, if you are building your own welding table, it is a good idea to correctly install a clamp to ground the table.
Keeping a ground clamp on your welding table or attached to your work helps prevent electrical accidents. While electrocution and electrical injury from welding rigs are statistically relatively rare, it’s still crucial to respect the power of electricity when operating a welding machine!