Electrical ground question(s)
I'm thinking of installing a medium size inverter so I can use my laptop while running on 12V DC. This Power Bright unit is an example of what I'm considering. There's a space under one of the...
Forum Discussion
rich85704 wrote:
Thanks, all.
To respond to some of the issues raised.
So the conversion from watts of inverter output to load on the battery in amps is roughly 10:1? A 150-watt inverter would draw roughly 15 amps? ....
No, the watts stays the same whether it is 12vdc or 120vac. The amperage is what changes.
150 watt divided by 120vac = 1.25 amp
150 watt divided by 12vdc = 12.5 amp
You also need to add 10% or 20% for the inefficiency of the inverter.
For my 400 watt continuous 800 watt peak inverter I used a 75 amp fuse and 4 gauge wire straight to the battery.
