Step 1: Understanding Section 30 CrPC.
A Magistrate of First Class may award imprisonment in default of fine, but the total imprisonment (substantive + default) cannot exceed the Magistrate’s sentencing power of 3 years.
Step 2: Application.
If 2 years of substantive imprisonment has already been imposed, he may impose up to 1 additional year. However, specific default limits allow up to 2 years where permitted, depending on the quantum of fine.
Step 3: Conclusion.
In this factual context, the maximum permissible imprisonment in default is 2 years.