Basic house current is 200 amp coming in. I want a car Alt to power my house is there a conversion forumla?

Question

Incoming house current is 200 amp AC at 60 Hz. I need a formula to convert a car's alt to match the house. can anyone help?

Ok, in the cars Alt let's remove the diode trio and make the Alt AC. Now I have a 100 amp car Alt that is AC what is the formula to make it compatible with the house current and what is the volt, amp and frequency difference between the 2?

Answer 1

OK so your alternator delivers 100 Amp, but still only at 14 or so Volt (to eventually charge the 12 Volt car battery). That translates into a maximum power of 14 X 100 = 1,400 Watts.
But now you want to have 110 Volts 60Hz which means you need an Inverter (1500 Watt). These things run on DC not AC, meaning you need to connect the input of your inverter to the car battery, and put a brick onto your gas pedal to rev-up your engine nicely (or else you car battery gets empty before the alternator can keep up charging it).
But inverters only have - at best - an efficiency of 80%. So finally, your house will end up with maximum 1400 Watt X 80%, say 1,100 Watt.
After you've done all that and spend the money on the inverter, it is still illegal to just feed that power back into your home without an approved changeover switch that seperates your house from the Hydro's Grid while you use an external power source.

Answer 2

to answer question 1, to convert 12 volts to 120 volts is a ten fold increase. the amps required on the 12 volt side is then 10 times that of 120, or you need a 2000 amp alternator, and not the kind that comes with a car. your puny 100 amp car alternator is only good for 10 amps at 120 volts. Most house service requires 240 volts CT for 2 x 120 volt legs. If you need the 240 volts then double the requirements, ie 4000 amp generator. such things are made to power submarine boats.

removing the diodes will give you AC. unfortunately the regulator for most car alternators are normally built in, so you still have only 12 volts AC. The regulator works by adjusting DC current in the field. To make an external regulator you will need a battery for DC source. If the windings in the field don't burn out, you potentially could get the output to 120 volts AC.

To get 60 cycles, it depends on the poles of the generator. A single pole would need to spin 3600 rpm, two pole windings are 1800 rpm, and so forth. by the way that is not engine rpm, but the speed required at the alternator.

Years ago, kits that replaced a pickup truck's external regulator were popular, they would provide 110 volts DC to an electric drill or other small DC appliance. The alternator was disconnected from the battery when doing this, so you had to be careful not to run down the vehicle battery. Also the diodes were prone to fail at the higher voltages.

Answer 3

What you are trying to do could be very dangerous. You should hire an experienced electrician.

Car alternators don't generate power unless you provide some power from the car battery. Instead of permanent magnets, they use electro-magnets. They put out more power than they take in, so they charge the battery. The battery needs dc, so the ac from the alternator is converted solid state rectifier diodes. But your house power needs ac.

A more practical system that could use a car alternator would be similar to the systems where solar panels are used to drive your watt meter backwards, when your solar energy system generates more power than you consume. This system includes a power inverter to convert dc from the solar panels to ac needed by the house. I imagine you could come up with a system which uses a car alternator driving a battery, which drives a power inverter, which feeds a switch, which feeds the power panel. (The switch might be integrated with the power inverter.)

If you really want to do this, I would contact a company that sells photo-voltaic power generation systems for the home owner. They have the hardware you need.

Answer 4

A car alternator will not produce enough current. Alternators do generate AC current, but it is converted to DC. It could be done but you would need more than just one.

Look into a generator head, instead. Also remember that the more power that you want to produce, the more it will take to produce it, unless you have access to some unlimited wind, or water energy to harness.

Answer 5

confident, it somewhat is. you will desire some skills, expertise of what you're doing, and a few hardware. between the perfect issues you will desire is a ability grant that has the flexibility to selection its output significantly and intensely right away or the amp will the two make popping sounds or be below powered and "clip" - or the two. between the least confusing suggestions on a thank you to do it somewhat is to apply a ability grant, or a small battery charger related to a battery. The battery will grant the surges of ability the amp will desire and the small battery charger will save it charged. not precisely an perfect setup for use in a house. the different option is to discover a ability grant matched in output to the amps electric call for - it somewhat is somewhat a risk, yet you will could desire to comprehend plenty approximately what you're doing to journey them up real.

Answer 6

The Car Dynamo is generating AC current -12 Volt,
rather than doing your idea i would prefer using wires from car battery (s) and using small car lamps with small current consumption and distribute them in your house (make small network)

I was using this due power black out in my area.

:)

Answer 7

1

Answer 8

can't be done.

AC vs DC

you could invert the dc to run ac, max with 100 amp alternator is about 30 amps of 110volt.