If the fees is not paid within the period aforesaid, a penalty equivalent to the fee for renewal shall also be paid into a Government Treasury, to the credit of the Government and the Treasury receipt relating to the payment of penalty shall be forwarded to the Regional Electrical Inspector concerned along with the Treasury receipt relating to the payment of the fee for the inspection:
Provided that a penalty equivalent to double the fee for renewal shall be paid if payment of the fee for inspection is delayed by more than 15 days of the aforesaid period.