Tds on contractors

In 194C Limit specified is Rs.30000 per single Transaction and aggregate payments RS.75000 During the year. For example Payments made to Party X Rs.60000/-transactions are as follows: Transaction 1: Rs.35000/- Transaction 2: RS.15000/- Transaction 3: Rs.10000/- Now I got a Doubt whether only payment exceeding Rs.30000/- is liable to deduct TDS or once if the party gets attracted to TDS, we have to Deduct TDS on transaction 2& 3 also