Figure 5-10 
  If you install at Ta 50°C above environment, use copper wires that have a voltage rating of 600 V 
and are temperature resistant to 90°C or above. 
  If you install at Ta 50°C environment, use copper wires that have a voltage rating of 600 V and are 
temperature resistant to 75°C or 90°C. 
  To be UL installation compliant, you must use copper wires when installing. The wire gauge is 
based on a temperature resistance of 75°C, in accordance with UL requirements and 
recommendations. Do not reduce the wire gauge when using high-temperature resistant wires. 
Main Circuit Terminals 
R/L1, S/L2, T/L3, U/T1, V/T2, W/T3, DC-, 
DC+/+1, +2/B1, B2