TG — Many insulated conductors are 75°C wet and 90°C dry, but two exceptions in (99)NEC table 310-13 are RHW-2 and XHHW-2 that are rated 90°C for both. A common application aside from termination-temperature limitations is as a “starting point” for table 310-16+ ampacity-table temperature adjustments and §31O-15 ‘more than 3 conductors’ adjustment.
