The Lincoln Electric Square Wave TIG 355 is a robust, industrial-grade AC/DC welder designed for high-performance TIG and Stick welding, featuring a 350A @ 40% duty cycle rating. It requires a 100-amp circuit (230/460/575V input) and is well-regarded for aluminum welding using its square wave technology.

Key Technical Specifications & Features
*Performance: 350A at 34V with a 40% duty cycle (40% at max amps).

*Output Range: 3-355A (AC/DC TIG), 5-300A (Stick).

*Input Power: 230/460/575V, 3-phase (most common models).

*Technology: Square Wave technology provides superior arc stability and enhanced cleaning action for aluminum welding, which is more effective than traditional sine wave machines.

*Industrial Use: Known as a "workhorse" for heavy-duty, industrial-grade fabrication.

Operating Modes & Setup
*TIG Mode: Features AC (aluminum) and DC (steel/stainless) modes, with high-frequency starting and adjustable balance for controlling cleaning action.

*Stick Mode (SMAW): Capable of Stick welding, requiring the TIG lead to be removed, ground attached to the left terminal, and selecting the correct DC polarity (usually DCEP).

*Controls: Includes panel/remote control options for TIG foot pedals and adjustable arc force for stick welding.
Considerations

*Power Consumption: This machine requires a substantial 100-amp circuit to function correctly.

*Weight & Size: Being an industrial transformer-based machine, it is heavy and designed for stationary, shop-based usage rather than portable

Welder comes "as is", and does not come with any of the accessories.