โMay-17-2014 11:23 AM
โMay-18-2014 08:02 PM
โMay-18-2014 06:34 PM
wa8yxm wrote:
Fish you typoed and said 50 watts at 120 = 500 watts at 12, you meant to say 500 watts at 120 = 50 AMPS at 12
And I think I was the first to advocate use of 10x or x/10 in these forums since this takes into account several variables like line loss (power/voltage loss in the wires) inverter effiency and such,, Not 100% accurate but as it turns out very very close up to around 1000 watts..
But it was clearly a typo type mistake to me.. (But then I'm the King of typos).
โMay-18-2014 03:22 AM
โMay-17-2014 09:49 PM
kaydeejay wrote:Fishinghat wrote:NO NO NO NO!
..........As a rule of thumb, you can figure a draw rate of 10 times, or 50 watts at 120 volts equals 500 watts at 12 volts. Most of us don't use our inverters to run any high wattage 120 volt appliances, like coffee pots, crock pots, hot plates, etc. TV sets, radios, lights, etc. should work just fine........
50 watts is 50 watts!
At 120 volts that is approx 0.4 amps, at 12 volts that is approx 4 amps.
Your statement is confusing the watts with the amps.
FOR THE SAME wattage, the current at 12V will be 10 times the current at 120V, plus a little for inverter losses.
You COULD have said "5 amps at 120 volts equals 50 amps at 12 volts", which is correct.
โMay-17-2014 07:07 PM
โMay-17-2014 03:19 PM
โMay-17-2014 01:54 PM
Fishinghat wrote:NO NO NO NO!
..........As a rule of thumb, you can figure a draw rate of 10 times, or 50 watts at 120 volts equals 500 watts at 12 volts. Most of us don't use our inverters to run any high wattage 120 volt appliances, like coffee pots, crock pots, hot plates, etc. TV sets, radios, lights, etc. should work just fine........
โMay-17-2014 01:36 PM
Fishinghat wrote:
As a rule of thumb, you can figure a draw rate of 10 times, or 50 watts at 120 volts equals 500 watts at 12 volts. Most of us don't use our inverters to run any high wattage 120 volt appliances, like coffee pots, crock pots, hot plates, etc. TV sets, radios, lights, etc. should work just fine.
โMay-17-2014 01:31 PM
โMay-17-2014 12:49 PM
โMay-17-2014 11:52 AM
โMay-17-2014 11:51 AM
โMay-17-2014 11:32 AM