Equity benchmark Sensex jumped over 250 points in early trade on Wednesday led by gains in index majors Reliance Industries, L&T and Infosys amid a positive trend in US markets ahead of the US Fed’s policy outcome. The 30-share index was trading 282.15 points or 0.47 per cent higher at 60,311.21 in initial deals. Similarly, the Nifty rose 84.20 points or 0.47 per cent to 17,973.15.