The best and most complete video on how to safely install a 220 volt outlet for your welder, and as a bonus i have included all the information needed to run your welder with your generator.
Real easy how to install a 220 volt outlet the method is for 220 volt only and not for 110 volt . How to wire a 220 outlet install an outlet even if you can directly connect the appliance to the breaker box in order to use a direct connection, the appliance must be within 50 feet (152 m) and within sight of the breaker box or you must install a disconnect how do i hook up a 220v 3 wire to a fuse panel answer this question flag.
Before installing a 220-volt circuit, check the panel to make sure you have two slots next to each other to accommodate the breaker the black hot wire connects to one of the breakers in the two-breaker set and the red wire connects to the other one. A 3-wire, 240-volt circuit has two hot wires—each supplying 120 volts for a total of 240—and an equipment ground wire a 120-volt circuit has only one hot wire connected to the breaker plus a neutral wire connected to the neutral bus bar in the service panel. Strip the insulation from the ends of the wires inside the box, then make the wire connections to the new 20-amp, 220-volt receptacle 14 connect the green wire to the green screw, the black wire to the brass screw, and the white wire to the silver screw. Home switches & outlets dryer circuit wiring and hookup dryer circuit wiring and hookup by donald kerr also note that a 220 dual breaker has both breakers bridged so that one of the dual breakers will also trip the other side if it where to trip off at the panel connect the black and red wire to the 30 amp double pole breaker.
220 is 2 circuit breakers connected together, 2 times 110 equal 220, i would be very careful with this circuit because 220 is lethal, but if you wire the circuit before you connect breaker then there is less likely shot of being electrocuted, but depending on what your wiring(a/c, elect stove, air compressor) you need to buy double breaker to match amps. High demand circuits require 220-volt power the breakers consist of a pair of interconnected breakers stacked together connect one hot circuit wire to one of the breakers and the other hot wire to the other breaker, then connect the neutral wire and ground wires to their respective bus bars.
The breaker used must be a dual (double) 30 amp 220v breaker 220v breaker meaning that the breaker must be of the type that actually connects to both bus bars in the panel, every other bus lug in the panel is on the opposite phase of the incoming power line refer to the picture below.