Assuming you mean 12 volts, then you cannot run any 78 Amp fans. Unless your fans run at 0.38 volts, there is no way to draw 78 amps from 30 watts.
20 Amp * 120 Volts = 2400 Watts 2400 Watt * 80% max use = 1920 Watts planned normal usage for a circuit with a 20 Amp breaker.
The power (in watts) can be calculated using the formula: Power (W) = Voltage (V) * Current (A). In this case, the power required to run the 3 amp well pump on 220 volts is 660 watts (220 V * 3 A = 660 W).
No you will not even get close to 1600 watts from that amp. If you read the spec for the amp they were putting 16-18 volts into the amp to get the claimed wattage. In your car you will be lucky to get 13.5 volts. You will see maybe 350 watts. A good rule when buying amps is a good amp will run about $1.00 a watt. So a $300 amp will be @ 300 or so watts.
To determine how many 120-volt, 7-amp lights can be run on a 15 kVA transformer, first convert the transformer capacity to watts: 15 kVA equals 15,000 watts. Each light draws 120 volts * 7 amps = 840 watts. Dividing the transformer capacity by the wattage of each light gives 15,000 watts / 840 watts per light ≈ 17.86. Therefore, you can run a maximum of 17 lights on a 15 kVA transformer.
The formula for watts (or power) is Amps times voltage. Therefore with a 6 amp draw times 120 volts would be about 720 watts. A 1000 watt power inverter would do the job.
To calculate the watts, you can use the formula Watts = Volts x Amps. If the voltage is typical at 120V for household outlets, then the trickle charger would consume around 720 watts (120V x 6A = 720W) while operating.
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.
2100 watts to run the refrigerator
Any amp capable of pushing up to 1500 Watts will do the trick, and shouldn't be too expensive to come across.
About 3,731 watts.
A 100 amp panel can handle up to 22,000 watts of power. This means you can safely run multiple high-power appliances or devices simultaneously without overloading the electrical system. However, it's important to distribute the load across the circuits to prevent tripping the breakers.
AMPS = Watts / VoltageOnce you have the Amps figured out, an amp hour is just one amp that's been run for one hour...Or2 amps that's run for 1/2 hourOr4 amsp that's run for 15 minutes...