Watts = Amps x Volts x Power Factor
Maximum value of PF is 1 for a resistive load.
If you have 120 volts and a PF = 1, then amps = 10.
Watts equals volts multiplied by amps. This would therefore be a five amp circuit.
The formula you are looking for is I = W/E. Amps = Watts/Volts.
To find an amperage, you divide the wattage by the voltage.
It's watts divided by volts equals amps. Example: 1200 watts at 120 volts is 10 amps. To get the watts if you know the amps, multiply the amps times the volts. 10 amps at 120 volts is 1200 watts.
Would be compared to 1200 watt amp
This will still only produce 12 volts. It will produce 1200 watts. watts is the result of Volts times Amps.
That depends on the voltage available. We assume 120 volts. Then amperage equals power divided by voltage. Amp. = 900 watts / 120 volts = 7.5 amps.
Yes, a 1200 watt amp can power a 300 watt box. The wattage of the amp refers to its maximum power output, so it can deliver up to 1200 watts if needed. As long as the amp is set up properly and not pushed to its maximum capacity, it can safely power a 300 watt box.
The amp hours capacity of a battery remains the same whether it is connected to a 12-volt DC load or a 120-volt AC inverter. So, the battery would still have 100 amp hours regardless of the inverter voltage.
1200 Watt wiring is more than enough for an 800 Watt amp. The rating of the sub doesn't make any difference to the cables. If you want to use the sub to its rated power you should get a bigger amp. If the amp can only give out 800 Watts and the sub can take 1100 Watts then you can put a bigger amp on. It is still going to be loud as with an 800 Watt amp. I have a 300 watt amp with a 1200 Watt sub and people hear me coming.
Wrong question. I assume that this pertains to a car and not a house. All modern cars run on a 12-volt system. So what I think you meant to ask is "how many AMPS in 90 watts at 12 volts?". Watts divided by volts equals amps, so 90 watts divided by 12 volts equals 7.5 amps. If you are trying to wire in a car stereo amp, better go with a 10 amp fuse.
The Audiobahn amp A2601Q model has a maximum power output of 2600 watts.