Mumbai, Aug. 6 -- The Indian rupee is expected to stay cautious in opening trades on Wednesday with all eyes on RBI policy for further guidance on growth and tariff impacts even as the central bank is largely expected to key rates unchanged after frontloaded rate cuts in its previous meeting. Pessimistic global cues from ongoing tiff between US and India and their potential impact on economy are seen weighing on domestic equities and currency alike. Yesterday rupee hits a new record low of Rs 87.79 against the dollar as per RBI reference rate as risk-off sentiment deepened after US President Donald Trump renewed his threat to raise tariffs on Indian goods over New Delhi's continued purchases of Russian oil. Indian shares also ended Tuesda...