I have a 220A Output Alternator. I know this sounds stupid, but I'm guessing I need a Battery Isolator with a higher amp rating?
45521
That is a huge alternator! I would suggest going much larger than that. Usually it is suggested to go at least 150% of rated output
621185
That would be the best thing to do. Mine is on a dedicated 20A circuit. If you have a 20A circuit instead of a 15A and depending what else is on the circuit you'd probably be good.
30671
If you don't know enough about EE, you really should not mess with the wires. You can increase amps by decreasing voltage, but I think you are looking for something else. You will put more strain on the battery, alternator and possibly computer circuits if you are drawing too much current. If the wires you are using are not supplying enough power, connect directly to the battery and use appropriate gauge wire. Good luck
129451
No. It takes 110 volts AC. Your car provides 12 volts DC. A 1500 watt inverter would draw about 150 amps from your car battery which is more than most alternators can provide except a fuse would probably blow first. 12 volt car heaters are available.
1848801
The unit I got did not have "HD" in the part number, so I assume it's good for 100 amps. I needed one for a 160 amp alternator.
1714713
And to add to Clark's formula. If your alternator is up to 15 volts. That is 208 amps for 2000 watts of inverter power. Note: Your alternator better be a huge one to handle those loads.Rule of thumb for inverters. It will draw 1 amp for ever 10 watts. so 2000 watts is 200 amps. If your inverter has continuous rating of 2000 watts with a surge of 4000 you need 400 amp fuse and wire like 2/0 gauge OFC (Oxygen Free Copper). I would suggest staying away from the copper clad (CCA) cables at these power levels.
1447150
Not sure, but this isolator has been charging my spare camper battery for 2 + years without issue....
1920287
The spec indicates the inverter can operate with an input of 15vdc. Also, the spec indicates the inverter has automatic high input voltage protection and will shut down on an OV condition. So it seem you could run your alternator assuming it does not output more than 15vdc. It's unliklely you car will deliver more than 15v.
238627
The only right answer to your question is, "it depends", because it depends on how much current you need to provide and for how long @ 120V AC.Since you are running a 12VDC input and a 120VAC ouput, you need about 10 times the current on the 12v side as you want out of the 120V side.Additionally, you need to have an understanding of Amp Hours capacity of the battery(s) used to provide the power to understand how long it(they) can provide the power needed.
2068137
Not sure I understand your question ....."IS THIS EXICETER REQUIRED" ? If you get the one I ordered, ie 200 amp, the directions in the box are very easy to follow & install. I have a 195 amp alternator and two 4D batteries and one 8D battery and it work very well for our application. It keeps about 14 volts on the two 4D batteries. I have a meter on them all the time and can check while driving down the road. If you have any more questions feel free ..... mlhusmann@gmail.com
440916
What truly matters is the alternator. Does your alternator have more output than is necessary to keep your main battery charged? Likely, it does. If so, this device will route the "extra" power to the other batteries when it can. Realistically, it should work for you if your alternator is in good working condition.
1147180
I would recommend upgrading your alternator. Typically for every 10amps you get 100 watts. This amp will probably not get enough power and may cause damage to the amp or over work your alternator causing it to burn out. I have 2 of these amps in my car with an upgraded 200 amp alternator and a optima drycell battery.
2017407
yes these numbers refer to amp rating of alternater...these units are junk...they rob you of output voltage...almost 2 volt drop!!! Buy the mechanical ones or better yet just use a regular solonoid. I use the solonoid on my 2001 Peterbuilt with 2 banks of 3 batteries each.
785846
Don't know the amps but I have used it with my Honda EU2000i generator with no problem. Might pull up The Poulan website.
32588
Hang on while I go look. There is a tag on the bottom that states 120V A. C., 60 Hz., 1.5 A. I would have guessed it would have a higher amperage need. Additionally, there is no mention of voltage or amperage requirements in the Owner's Guide.
1844444
I'm surprised no one has pulled out a multimeter to test this, and if I purchase one of these I certainly will... From my experience with similarly-sized relays and looking at other isolators, 500 milliamps would probably be a good guess, but assume 1 amp to be on the safe side
1674784
I remember researching this before. The manufacturer won't say exactly. Read the forums on nPower. I might be able to figure it out with my multimeter when I get home. I thought theoretically, you could figure it out with an equation. it was enough to start my v6 2.1L engine. The inverter to ac isn't much. If my calc is right, 400W at 120V is only 3.3A on AC, but you can't expect much from a 12v battery. I thought dc was supposed to be infiinite, but I suppose you're looking for cranking amps. Overall, I was very pleased with how the nPower performed. I went a couple of months before finally diagnosing my car battery. The nPower got a fairly large engine through a cold Wisconsin winter with a bad cell in a relatively small car battery.