I have a similar question to Chevron's above regarding the equipment on our "new" to us boat.
We have moved into a marina after cruising all summer and now have the option of electrical hook up and like chevron I've considered disconnecting the hook up and using the solar during the day if the sun is out, hoping to reduce the electric bill. (probably wishful thinking over winter)
The boat has the following equipment fitted,
Mastervolt 2kw psw inverter
separate mastervolt charger
galvanic isolator
3.5kw travelpower
1.2kw solar.
1kw immersion (only on hook up or travelpower)
There is no change over switch, the boat seems to automatically decide which power supply to use depending on whether the hook up is connected or not. For instance when on hook up the charger automatically comes on and keeps the batteries at a steady 13.69v. (0.4 amp charge rate at the moment)
We are also pretty power hungry with a 240v fridge, tv, satellite box, freezer, washing machine and charging for laptop. tablets, phones. lighting is all led, + the usual pumps etc.
So, the questions,
1. What is best practice when disconnecting / reconnecting the shoreline?
We have two 230v switch panels (will post a photo in a minute). I'm guessing one for shoreline and one for inverter ???
Would it be better to switch off / on there rather than plugging / unplugging the shoreline?
2. When on shore power should I switch the inverter off. It stays on according to the MICC panel?
3. Is it worth bothering with at all or just stay on hook up 24/7 and have a bigger leccy bill?
Photos of equipment to follow.