Upgrading shore power service from 30 amp to 50 amp.

[Scarlett]

Agree with Jim, have done this to a few boats over the years, rather than a 50 amp put in 2 30 amp inlets, split off your Air con to the second cord at the panel and leave the rest as is, not hard to do, lots of production boats do it that way. John

[SKYCHENEY]

On our 43DC, the twin 30a cords were marginal to run everything especially for the one that just ran the two cruisairs. Twin 30a/125v is just 30 amps at 240v, while a single 50a/240v inlet provides a full 50 amps at 240v.

To convert, you need to replace the 10 gauge wires from the plug to the panel with 6 gauge.

[SeaEric]

Agree with Jim, have done this to a few boats over the years, rather than a 50 amp put in 2 30 amp inlets, split off your Air con to the second cord at the panel and leave the rest as is, not hard to do, lots of production boats do it that way. John

If I understand correctly, that's what the OP has now.