The weld axis is horizontal. In 2G, gravity pulls the puddle down, so you must use a faster travel speed or tighter arc. Vertical
Keep a laminated positions chart in your toolbox. When in doubt, match your joint configuration, welding rod, and technique to the correct cell on the chart. weld positions chart
Every Welding Procedure Specification (WPS) lists the position. If a procedure is qualified for 1G (Flat), you are legally not allowed to use that specific procedure to weld a 4G (Overhead) joint. The position dictates the parameters—amps, volts, and travel speed must be adjusted based on where the welder is standing. The weld axis is horizontal