Just Bob wrote:
I'm building a new trawler with a 24v 5000w inverter being installed and am getting differing opinions on the size of the house bank to power it. The boat is a 54' with normal cruising needs. Any advice from more expierienced cruisers would be helpful. Thank you!
*About 12 years ago when I purchased/installed a 3000 watt inverter, I flat out missed considering the amperage draw in idle/low output*mode.* It turned out to be 5 amps (12VDC) to charge my laptop and light an AC reading light.
Subsequently installed a separate 400 watt inverter with separate wiring to all low amp needs, it costs a tenth of an amp to idle.
While I haven't analyzed present inverters to see if this issue has been improved, it used to be the the larger the inverter, the higher the idle/low output amperage comsumed.* It may be that your inverter needs might be better served with a couple of smaller units.