Hi, I'm replacing a microwave oven rated at 13A with one rated at 16A. This plus a conventional oven are fed from a 32A MCB in a consumer unit, via a single 6mm2 T&E cable to two 13A fused flex outlet switches. The original installation was professionally done seven years ago. Can I replace one of the fused switches with e.g. a 20A flex outlet switch to provide the 16A supply? Many thanks in advance.