NY -- Standard & Poor's CreditWire 6/24/96 -- Standard & Poor's today has assigned its triple-`B' senior secured rating to Connecticut Light & Power Co.'s (CL&P) $160 million first mortgage bonds due 2001 and has placed it on CreditWatch with negative implications. The triple-`B' corporate credit rating and senior secured rating, the `A- 2' commercial paper rating, and the triple-`B'-minus preferred stock rating for CL&P, a unit of Northeast Utilities, remain on CreditWatch with negative implications. At March 31, 1996, CL&P had approximately $1.9 billion of total debt outstanding. The CreditWatch listing stems from concerns over the ongoing nuclear plant difficulties at the Millstone Nuclear Station, which is under intense scrutiny by the Nuclear Regulatory Commission (NRC). All three Millstone