I assume you are asking about the electrical wiring requirements for connecting two 1-ton air conditioning units to a power source. If each air conditioning unit has a capacity of 1 ton (12,000 BTU per hour), they typically require a significant amount of power to operate.
For safety and proper operation, it's essential to ensure that the electrical wiring can handle the combined electrical load of both air conditioning units. To determine the appropriate wire size (gauge) for your setup, you need to calculate the total electrical load (in amperes) and then choose an appropriately sized wire based on the National Electrical Code (NEC) or the electrical code in your region.
Here are the general steps to calculate the total electrical load:
Check the nameplate or the specification of each air conditioning unit to find the rated power consumption in watts (or amperes) for each unit.
Add the amperage of both units to get the total combined amperage.
Next, check the ampacity chart for wires to find the appropriate wire gauge for the total amperage. The NEC or local electrical codes will have these charts available.
Keep in mind that the electrical requirements can vary depending on the specific make and model of the air conditioning units, and the electrical codes in your region may have specific requirements for HVAC installations.
In any case, it is essential to consult with a licensed electrician or HVAC professional to assess your specific situation, determine the appropriate wire size, and ensure that the electrical system is safely and adequately set up to handle the load of both air conditioning units. Electrical work can be hazardous, so it's best to leave it to trained professionals to avoid any safety risks or electrical issues.