Tesla Inc. (NASDAQ:TSLA) has decided to raise the salaries of its hourly workers at Nevada Gigafactory, according to internal sources reported by CNBC. What Happened: Tesla aims to hike the hourly rates for its fixed-rate employees at its manufacturing unit in Sparks, Nevada, with increases ranging from $2 to $8.30 per hour. The lowest wages will see a rise from $20 to $22 per hour, while the highest will increase from $30.65 to $34.50. Furthermore, the pay of several levels earning between $26.20 and $30.65 per hour will be adjusted to $34.50, reported CNBC on Wednesday. Termed as “cost of li…