Question about Schumacher PI-400 Instant Power DC to AC Power Inverter - 400 Watts

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Schumacher power inverter pi-400 problems

Connected inverter to car battery and ran plug to a 115v sump pump. Pump recieved one second surge then PI-400 clicked off. What am I doing wrong?

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6ya6ya
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Posted on Jan 02, 2017

Skinnerd1
  • 13 Answers

SOURCE: Need manuel

Here is a link to your manual.
http://manuals.batterychargers.com/manuals/00-99-000854.pdf

Posted on May 22, 2009

  • 608 Answers

SOURCE: Lost the wall charger of my Schumacher 400w power

Ah, I see, it seems what you have is a power pack. If so it would contain a gelcell battery, probably 12 volts. If this is true, then you may charge it with any 14-16 volt wall charger. You have to make sure you observe correct voltage and correct polarity when connecting up. Also you may have to obtain and change the plug on the charger wire.
I'm assuming the battery DC output is inverted to AC and you use it to power small AC appliances.

Posted on Mar 21, 2010

SOURCE: I need a replacement charger for my Schumacher

will not charger the batterys

Posted on Apr 24, 2011

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What's your problem?how many amps on a 1/2 horse sump pump


750 watts is pretty close to one HP. However, the pump will have a much higher current draw on start up which may be too high for the inverter. (The accurate number is 745.699872 Watts per Horsepower)

Discounting any losses, 750 watts from a 120 volt supply will draw 6.25 Amps. so 1/2 horsepower should draw 3.125 while running. Startup current may be much more. Check your pump for its current draw (should be printed on the pump) and check it against the inverter's limits. It may be that the inverter is too light for the pump.

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How long can I use my adapter to run my sum pump before draining my vehicle's battery


Be sure that the inverter can handle the load of the sump pump.

The vehicle should be running while the inverter is in use unless the sump pump only runs maybe once every other hour or so. Make sure you don't run the vehicle inside an enclosed area like a garage even if the door is up. Exhaust fumes may still get into the house. This inverter size is barely large enough to handle a standard sump pump.

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I have a coleman powermate pmp400-t inverter 400w/800w will it power a sump pump? I tried it and it beeped and the fault light came on


Hello, the answer is no. This inverter will work with a pump that below or about 400 watts power for operation. I notice it says that the inverter 400w/800w. The 800 watts is the surge required to get an electric motor to run. On a single phase motor (120 AC) and it take 4 amperes to operator this motor. But to start the it will 12 amperes to start it. This is one reason why on a lot of electrical motors there will be a big tube or can, this is the starting capacitor, it stores energy in form of current (amperes) to drop across the windings of the motor when it starts. If some electric motors didn't have this capacitor. The most likely scenario would be tripping a breaker because it drawing to much current.


Now, for you problem. Example of Power and the unit of the formula is V (volt), R (resistance) I (current) P (power) Ohm's states that :

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Now Power would be stated: P = V times(x) I. Therefore in your case, if the pump at normal operation is drawing 4 amps of current for operation pumping water. The power factor would be 120 V AC (house voltage) times (X) I (current) which 4 amps. So here is what you have: P = 120 X 4 equal= 480 watts.

Therefore, your inverter will not work because it operating at 80 watts more than the power inverter can deliver which is 400 Watts.



If you need to purchase a new power inverter, remember always take into account the Amperes required for operation. Just by the simple Ohm's Formula. Best of Luck. GB....stewbison
son

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I recently purchased a Schumaker 410/820 watt inverter. I immediately hooked it up to a brand new deep cell batery I had purchased just prior to receiving this inverter.
I plugged in several devices to make sure the inverter worked and to get some idea of what devices I can expect this unit to handle.
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I just installed Hayward 1.5HP inground and it tells me that if i use the 115v to use a 30 amp breaker - and when i left the 230V button positioning inside the back of the pump and connected with a 14 ...


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