Hi,
As already mentioned correctly, 92A, 92B and 92C are section codes to be entered in case of filing TDS return under Form 24Q which refer to as follows:
92A: Payments made to Govt. employees other than Union Govt. employees
92B: Payments made to employees other than Govt. employees
92C: Payments made to Union Govt. employees.
The TDS rates shall be the same in all the three cases above. Its just the matter of classification of employees as per their relevant authority.
Regarding deduction of TDS under the sections mentioned in the Query above,
Section 192A is TDS on premature withdrawal of PF before 5 years and TDS is deducted @ 10% by Trustee of the PF scheme or any other person authorised under the scheme. Provided that the amount of withdrawal is in excess of Rs. 50,000/-.
And there is no Section 192B or 192C.