Matt wrote:
Hi,
I'm re-doing the control panel in my boat and can't make any sense as
to what items should have a switch on CP. eg AM/FM, vhf,sounder have
dedicated switch on CP yet also have their own on/off switches and
fuse protection. Cabin lights and water pump circuits don't have any
switches on CP.
All circuits go to breakers and or have fuses.

Can anyone enlighten me on this.

It's usual to have all the radio-type components grouped to one
switch/contact breaker, and the instruments and similar grouped to another
switch/contact breaker.

Dennis.