Ken Car,

Sorry for the long delay. The 220VAC with 2 x 30amp breakers is just what the circuit can handle. This tells me nothing about the pump itself what it uses or requires. A rough comparison though for you is that you have 220VAC x 60amp = 13,200 watts. I don’t think your pump is pulling that much power. Anyway, the transformer will be the same watts. So 13,200 watts would be a 13.2kVa transformer, which I’m sure they don’t make, so maybe a 14kVa or 15kVa anything larger than 13.2kVa will be able to supply the same current as the 60amp 220VAC circuit.

Personally, I would keep it 220VAC unless you are trying to run from a generator that only has 110VAC output, or a DC to AC power inverter or something. You may have other reasons to want to run it from 110VAC, but going through another device (transformer) you introduce efficiency. You may have to pull 15,000 watts 110VAC to power 13,200 watts 220VAC as the transformer will not be 100% efficient. Also if there is some reason you really need to power from 110VAC, I would look at the pump itself and see what it’s amp/watt rating is so you aren’t buying too large of a transformer than you need and spending lots of money on that large transformer when that pump may only be pulling 10amp and no where near the 60amp.

]]>Steve,

I’m just going by the max watts your AC pulls (1,695). That is 1,695 watts / 12 VDC = 141.25 amps yes your inverter should handle it, your battery should handle it, but your alternator can not keep up with it, unless you’re only running it part of the time, but it will pull every thing your alternator has to offer, and leave no power for anything else. Adding another battery will help, but that battery still needs to recharge. If you pull 141.25 amps from battery , that 141.25 needs replaced.. Maybe get a few solar panels to help generate some power. Also the 141.25 amps being pulled is if your inverter is 100% efficient, which I’m sure it’s not. So AC pulls that, but for the inverter to give ac 1,695 watts, the inverter may need to pull 1,864.5 watts (155.375 amps).

Crest,

Not sure, maybe malfunction or connected incorrectly.

I have no problem starting this A/C unit & continuously running with my 2000w honda gas generator.

Here are the specs of the a/c unit im trying to run on a 12v system. right now i have only one AGM deep cycle battery installed, i have a second matching battery im going to install.

my main question is- how many amps, 12v do i need to supply enough amperage for the unit to start & continuously run a/c unit while driving at highway speeds.

will 2 AGM batteries work or do i need more then 2.

my power inverter immediately sets off low voltage warning when i try to turn low A/C mode on, resets when i try and turn High A/C on. which is telling me i do not have enough 12v output amperage to supply the inverter to start this A/C unit. (note, it was 120 degs that day i was testing everything, even harder to start a unit in those conditions) i’ve been researching hard start/soft start relay capacitor systems. what ive seen and read, capacitor drops that high amperage spike during a/c compressor start up. (your thoughts)

A/C UNIT SPECS:

specifications:

Cool/Heat Capacity: 13,500

Electrical Rating: 115 VAC, 60HZ

Cooling Amps-High: 13.1

Running Watts Standard: 1400

Running Watts Desert: 1695

Locked Rotor Amps: 50.5

Battery specs. (going to install 2nd battery)

Brand: X2Power

Voltage: 12

Format: BCI Group 78

Lead Acid Type: Dual Purpose (Starting/Cycling)

Cold Cranking Amps: 880

Battery Type: Ultimate

Capacity 20hr: 64AH

Chemistry: Lead Acid

Cranking Amps: 1050

Lead Acid Design: AGM

Thank you, any advice would be greatly appreciated.

im trying to figure out if i need to cut my losses and start over with a more expensive 12v a/c unit, or will i spend double upgrading the amperage output of my 12v charging system. there are a few companies that offer 300-370amp alternators for around $599.00

The Digital indicator for my Solar Controller Amphere won’t have display, what would be the possible cause? Below are the specs & my appliances: Please help. Thank you.

2 BOSCA panels 200watts (100W each)

1 BOSCA CONTROLLER 40A

1 SUOER INVERTER 500W

1 MOTOLITE Deep Cycle 12V

APPLIANCES:

1 LAPTOP

1 ELECTRIC FAN – 30W

1 WIFI MODEM 12V~1.5A

1 LED TV-54W

BOSCA solar controller Model ST-W 1240 with specs below:

MODEL ADOPT TO BATTERY VOLTAGE VOLTAGE IDENTIFICATION MAXIMUM CURRENT OUTPUT SOLAR PANELS POWER

ST-W 1240 12V/24V 12V/24V 40A 12V(360W)

24V(720W)

SUOER Model SAA-500A with specs below:

MODEL INPUT VOL OUTPUT VOL RATED POWER VOLTAGE RANGE

SAA-500A DC12V 220V~240V 500W 10.5~15V

MOTOLITE Solarmaster – Deep Cycle Batteries with specs below:

SIZE AH V L W H TH

SMN100 100 12 392 180 200 230

Garry,

watts is the same whether it’s 110VAC or 12VDC, but your 27watt light is probably pulling 27watts, but to make that 12VDC from 120VAC is using power as well. You have a power inverter installed that is taking the 120VAC and converting it to 12VDC, the efficiency of this power inverter will not be 100% efficient. So you are using electric just to convert from 120VAC to 12VDC. The best I’ve seen is 95% efficient. So you’re using 5% more electric just to convert. So your 27 watt light bulb is using 27 watts itself and another 1.35 watts to convert the power totaling 28.35 watts. That’s if your power inverter is 95% efficient. I’m sure you can look up the make/model of yours and see what it’s efficiency is.

To answer your question about leaving a 27 watt bulb (using 12VDC) and a 100 watt light (using 120VAC) the voltage doesn’t matter, 100 watt is more than 27 watts. Hope this helps. Thanks for visiting!

]]>Dewald,

You’ll need a transformer and a disconnect breaker. I don’t know how many amp service you are wanting, but you’ll need to know this to size your wire, transformer, and breaker. I’d recommend breakers on the primary and secondary of the transformer.

Smith,

I’m going to guess that you are wanting to know the difference between plugged into socket or plugged into grid? You don’t plug into a socket. You can either be off-grid, or on-grid. Off grid is you do not have anything from electric provider, just your power you generate and store in batteries. On grid is where any excess you generate goes back to electric company and you get paid for it. If you don’t generate enough you pull from the electric provider like you normally would.

Stephen,

There is a kwh calculator on my website here that you can plug your numbers into and it will calculate it for you. For me to calculate this for you I’d need to know the voltage. 50amps * voltage = watts, which you can find that formula on my site as well.

Chinna,

100kwh = how many of what units? I don’t know what unit of measurement you are wanting to convert to.

Vikrant,

You can use a MPPT charge controller that will allow you to charge 12 volt battery bank with 24 volt solar panels.

I have 5 pannels of 300w 24 volt my problem is how to charge my battery bank which is at 12v if i make my battery bank of 24 volt then i wont be abel to run my fan as it oprates at 12volt

Secondly distance of farthest fan from battery bank is around 100mtr is it ok to connect dc fan with battery at this distance….pls help a diagram will be great help ]]>

Kris,

I’m not sure what you mean by 91,000 watts? Is that 91,000 watt hours? 91kWh? Yes, people can use alternators to generate power, you still need a method of turning the alternator. If you put fan blades on it, you’ve basically made a wind generator.

As far as the fan being around 100 meters away, that should be fine as long as you have adequate gauge of wire to carry the required amperage. I would also be sure to have a fuse or circuit breaker at the beginning of the circuit closest to the battery in case that long wire gets a ground or a short it will pop the fuse or breaker so you don’t damage your equipment or get hurt.

]]>Vikrant,

First we need to calculate how much power you’ll be using.

There will be 104.16 amps being drawn constantly, so make sure your wiring is sufficient, fuses, etc.

25watt x 10 hours = 250 Wh / 1000 = .25kWh each fan

.25 kWh x 50 fans = 12.5kWh each day

Your 12v 150Ah battery holds 12volt x 150 A = 1800 Wh / 1000 = 1.8kWh

You need 12.5kWh each day and each battery is 1.8kWh. So you’d need 12.5 kWh / 1.8 kWh = 6.94 batteries.. So 7 batteries.

This is perfect charge, discharge, no surge, efficiency of charger, temperature of batteries, etc. All if those things will effect tgevamount if power you truly get from your batteries.

Now you have 7 batteries required to be charged. Which will most likely be 8 or 10 batteries after you factor in all those other factors I mentioned. You can either put 2 batteries in series to make 24volt which will leave you with 4 or 5 of those sets to wire in parallel. You could also take 4 or 5 batteries, wire them in parallel which now gives you 2 sets to wire in series. Now use your 24 volt panel to charge.

You will also need to know your 300 watt solar panel will not keep up with this load. You will need around 1283 watts if you are generating 100% from the panel 6 hours a day. Not sure if your area and sunlight you get, as that will effect this number as well.

]]>I want to run 50 DC Fan (12 Volts 25 watt)

I have 12 volt 150 Ah battery.

I need to Know…?

1) How many batteries do i require to all the fans for

Ten Hours every day.

2) How can i charge these batteries using solar panel

I have 300 watt 24 Volt solar panel.

12 Volt panel is not available in my area :( ]]>

Gail,

38 amps * 243 volts = 9234 watts

9234 watts / 1000 = 9.234 kWh

9.234 kWh * $0.11 = $1.01574 per hour

You can use the kWh calculator on my site to do this calculation for you. It will tell you cost per month and year.

I hope this helps you. How many miles do you get from 1 hour charge? You can then use that to calculate how much it costs per mile to drive this car.

]]>Speedy,

They both would he the same. 100 watt draws 100 watt regardless of the voltage.