It makes it easy to power your RV and has enough to power to run a 15,000 BTU RV air Jul 6, 2017 · Few users will have steady-state loads exceeding 300 watts. wiring harness has to be completely replaced! Feb 11, 2023 · Feb 11, 2023. 6 104 4 120. The easiest way to determine the size of the alternator you need is by establishing the extra amount of power you need on top of the current supply. Jan 8, 2023 · Yes, a 3,500 Watt generator can absolutely run a 13,500 BTU air conditioner. Quick view. Consider Your Vehicle’s Wiring and Battery: 6. Figure 1/2 the alternator is used to run the car (best-case) and your amps are at least 70% efficient we get to: (2500w / 70%)/14. Plug in and turn on products from largest wattage to smallest. Mark, a certified electrician, simplifies electrical work. Some cars may have alternators that are more powerful, while other cars may have alternators that are less powerful. Oversize 8mm positive and ground studs make cabling upgrades a snap, while Apr 6, 2024 · A 3500-watt inverter generator can safely run small appliances, including a circular saw, air compressor, etc. However, the amount of power an alternator can produce also depends on the type of car it is installed in. I have perused the web and come up empty. depends on the package, but should be 105. 48 MSRP: $1220. This reduction in power allows RVers to start and run their air conditioner with a smaller generator like a 2,000 or 2,200, negating the need to haul around a bigger generator like a 3,000-watt or run two smaller generators in parallel. 52 ( 36%) Check the fit. To get the current draw, assume the alternator voltage if 13. Dec 8, 2022 · Generator Inlet Box 30 amps Vs 50 amps which one should you install. 5 amps. As mentioned, it is important to assess what you are going to be powering using the generator. Nov 13, 2023 · A 3500-watt generator can be a lifesaver during power outages. #13 · Mar 26, 2012. My own steady-use case is for a draw of about 200 watts DC, popping up for short periods to the 280 to 350 watt range. 9 169. also a 130 and 145, I do believe. 3500 4000 4500 5000 6000 6500 7000 7500 8000 220A ALTERNATOR OUTPUT CURVES - 750F (240C) SALES CODE BAJ 220A Output Performance 75F alternator inlet air 2co'F alternator inlet air 9000 250 200 150 100 pulle 5. For example, at engine idle, about 700 RPM, a 180 amp alternator can produce 127 amps, and a 220 amp alternator can produce 160 amps. Class D (~70% efficiency) - <350 watts. Since a 3. 7L diesel 1000 2000 Output [A] 19. Mar 4, 2009 · The 130A has a larger pulley than does the 105A, thus requires a 3/4" longer belt. I want to use it (in lieu of a generator) to run an inverter to power a 120V electric chainsaw, string trimmer, hedge trimmer, etc. In this case, the equation would be 2000 watts / 12 volts = 166. These impressive alternators produce 200+ amps at engine idle RPM, (on diesel applications) and 320+ amps at normal cruising speeds AT FULL OPERATING TEMPERATURE. It will be a lot less noisy with the speed control also. 3 Kw) 190 Amps x 240 Volts = 45,600 Watts of power (45. 3,600 W. Ram ProMaster 3500 Generator-Engine. The key lies in the starting watts, which tend to be significantly higher. For this reason, it is crucial to determine which appliances to run at any given time to avoid overloading the generator. Here are the key considerations: Mar 22, 2012 · 69 posts · Joined 2011. 2. A 3500-watt generator can easily power the refrigerator, lights, chargers, computers, and a television system in most homes. The size of the breaker you need. 1. You will need a circuit with a 15 or 20-ampere breaker to keep it from overheating. 2004 GMC 3500 4x4 RC 11' Utility Duramax/Alli. TOTAL. 12. Make sure you also check how many watts a car alternator produces. 626-150-00-60. To lessen startup impact, you can purchase a hard Jan 26, 2004 · tysmith. 150A * 14. If you keep your stock battery, a mid to large size battery will fix it. PowerRush™ Technology*. While this unit might not be able to run multiple power tools simultaneously, it can run one at a time. This usually happens only in large, multiple-kilowatt sound systems. 2013 Yamaha 242LS. When a generator comes with a wattage of 3,500, it means that 3,500 watts is the maximum output. The fuse location is at the rear of the engine at bell house. 3000W output from nominal 12V (call it 'maybe' 13V with engine running and voltage drop to the inverter) and let's assume say 90% efficiency means you will be pulling 3000W / 0. However, you may have more items that need the use of your generator Oct 13, 2023 · The size of the alternator you need depends on the power demands of your amp and other electrical accessories in your vehicle. Several factors come into play when determining the size of the alternator needed for your car audio system. Apr 26, 2019 · I'm looking to run a 1500W amp or dual 1000W amps. I also have an extra Optima Red Top in the back, and plan on putting a Yellow Top under the hood. Jul 27, 2023 · What Is The Gas Consumption of A 3500 Watt Generator? If you have a 3,500-watt generator, you may wonder how much gas it uses. For instance, the Champion Power Equipment 100307 portable generator delivers 3500 running watts and an impressive 4375 starting Aug 14, 2018 · The current required for maximum output totaling 1,400 watts is calculated as follows: 1,400 / 14. Generally, it’s recommended to have an alternator that can handle at least 20-25% more amperage than your amp’s requirements. 2010 GMC Yukon. File: PS903500_856_trilingual_03. #2. 2011 Keystone Fuzion 405. You can only measure amps with either an amp clamp or putting a DMM inline with your batteries/charging system, which probably isn't a good idea on battery cables, would kill your meter. I have 2 Hifonics TX1505Ds running at 1 ohm to produce a rated RMS of 1500 watts each. This 240 amp alternator for 1996-2004 GM trucks and SUV's cranks out tons of power at a great price. This kind of generator is used with stick welder machines. And iirc, the stock alt pushes around 136 amps. you wont drop . Other Name: Generator Kit Engine; Alternator. If you have a 30-ampere breaker, you can run about 60% of the generator’s capacity on that Oct 12, 2023 · The answer is a resounding yes. Provides 50% + motor starting capacity. Refrigerator (600-800 watts) Freezer (500-700 watts) 393 comments. MOD# 580 321-821. 3000 watt: 85 – 95 amp welder output welding machines can be run on this generator. Power your tools and home essentials with the 3500 Watt Portable Generator. The thing is, an average 13,500 BTU aircon requires 1,250 running Watts and 2,750 starting Watts. 2 191 2 197 8 201 7 204 2 210 5 213. #2 · Jan 26, 2004. Sep 28, 2017 · The battery current sensor monitors the battery current. 1 215 5 218. 6894 posts · Joined 2007. Meanwhile, central air conditioners typically operate at about 3500 watts, with starter power outputs often thousands of watts higher. Oct 14, 2006 · If you're doing a long run (>20 feet), you should use one size larger. 2 manual 4x4 3/4+ton 64,013 miles (5-1-19) The Blowby Queen '94 Chevy 'burb Silverado K2500 4L80E 4. A generator with 3500 running watts can effortlessly handle the load of two fridges running concurrently. 2002 2500 4WD QCLB - BHAF, 5" Straight Pipe, Supershafts 1 Apr 7, 2022 · Pulley ratio is the comparison of the crank pulley diameter with that of the alternator pulley. 600 a/h's lithium down below. Aug 1, 2012 · D45 Discussion starter. 6 to 1. The supply to the Inverter, Soft Start or DC Aug 30, 2022 · Assume that the 1,000 watt amplifier is working at full power and has an efficiency of 80%, the actual power consumption of the inverter is 1000/80% = 1,250 watts. , in a work setting. 2008 Chevy 2500HD CCSB 4X4 D/A LMM EFI-Live. The alternator wiring harness is fused with a 300A. Alternator 1. Sep 15, 2020 · Generac iQ3500 - Ultra-Quiet Electric Start Portable Inverter Generator. Includes instructions, hardware and proper belt for installation. 1V confirm the following: Make sure alternator charge post nut is tight. Jun 27, 2022 · The engine size will determine the size of the alternator, while the electrical load will determine the output rating. Description. Battery Recommendation. Compare the two side by side at the parts desk and check out post #8 here: Per post #8, refer to your build data and it'll indicate which amperage alternator came on your unit. As you can see in our example above, if we add up all running watts of our appliances we get the number 2,950 – so we are well within the 4,000 running watts limit (850 + 700 + 50 + 150 + 1,200 = 2,950). Jan 15, 2024 · The 3500-watt generator can easily power a few lights, a fridge, freezer, air conditioner, and other appliances. For a sound system with a maximum power output of 1500 to 2000 watts, you will need an alternator with an output of at least Here is the full step-by-step calculation of how to determine the wire size for a generator: Divide the generator’s wattage by the voltage to calculate the amp draw. Well the alternator may be able to handle a 2000 watt inverter but that’s at 100% efficiency. A 2000W audio system at charging voltage is drawing about 142 amps. Add the part to your cart to see the core charge. I once had a modded MTX 8100D that did 3500 watts (give or take a few) @ 1 ohm in my daily driver, not counting the 100 x 4 Concept amp I had running the mids & highs. pdf Size: 11. 67 amps. To calculate the battery capacity for your inverter use this formula. 4/15. wonder if you can swap around without messing with anything else? Ty. It is important to understand that the alternator you choose to purchase can have amperage output higher than the total from the calculator, which will help accommodate for any electrical parts that may have not been accounted for. Thanks in advance. F57 (300 amp) Alternator Fuse. 6000 watts at 14. 8 gauge: ~55 amperes. 2 gallons of gas per hour. A 900-watt electric kettle draws ~1050 watts DC for 5 minutes or so, which is about equal to 100 watts for 50 minutes May 18, 2019 · 4 BB's can theoretically take 1C or 400 amps when charging. 4 = 97 amps. May 19, 2015 · Drop in for the single 145 in my 07 classic. It may use between 0. Alternator output is linear, the more RPM the more current, to get 180 amps or 220 amps, you would need an engine RPM of 2500 Team GP DUAL Alternator Bracket 2014+ GM 5. With these circuits on, the voltage should remain high. #9. The size of alternator you need will depend on the size of your audio system. $400. As an example, a 6-inch crank pulley used with a 2-inch alternator pulley comes out to a 3:1 ratio. The Predator 3500 is rated for 3,500 watts of continuous power, with a peak of 4,000 watts. Now you may run into issues with the existing wiring to the battery being undersized for full load and I believe that a 16 amp constant load on that inverter is harmful. A bigger alternator will help alot also. . 3500 watt: A 95 – 105 amp welding machine can be run efficiently by a 3500 watt generator. Dec 18, 2021 · A good aftermarket alternator should offer between 250 and 300 ampere, which is more than enough current to run both your car system and your stereo too. 9 liter V8. Multiply the result by 2 for lead-acid type battery, for lithium battery type it would stay the same. Quadstar Tuning. Inverter capacity (W)*Runtime (hrs)/solar system voltage = Battery Size*1. Charge Path Resistance Test. 7v is a 100% charged battery. 4v is roughly 400AMPS of current. If you are planning to install a 7500 watt generator in your home, it is important to know what size breaker you need for it. Apr 24, 2023 · The Predator 3500 generator offers up 3500 starting watts and 3000 running watts which is a great range for just about any residential and smaller commercial use. 5 = 92 amps. 33. Another ideal generator size for small stick welders. 5 volts. 558 posts · Joined 2009. If you’re running a BTU alone, with no other appliances plugged in, a 3,500W generator will easily run such an AC. 7. Apr 27, 2024 · To calculate the ideal alternator size, you need to consider the power requirements of the amp and the electrical system’s overall load. Consider Overhead: 3. Power Wire: 10 gauge: ~35 amperes. But if you need to run appliances with heavy power consumption together at once, you may need multiple generators. 00 Honda Power Equipment 10W-30 Motor Oil, 1-Qt. Mar 9, 2023 · The wattage of a regular alternator is usually 500 to 600 watts, although modern alternators can produce over 2500 watts. 5kw generator can provide 14 amp and 240 volts or 28 amp and 120 volts you will be able to run all medium power appliances without overloading them. For example, a 5,000-watt inverter generator has a surge wattage of about 13,500 watts. If you were to do both. 2015 Yamaha Waverunner FX Cruiser SVHO. Your headlights dim when the stereo pulls too much power out of your car's electrical system. Feb 1, 2010 · Feb 1, 2010. Return to Manual Listing. An alternator with a higher rating is good for your battery life or after installing aftermarket electrical accessories. Add to Cart. I was thinking:-eBay 180 amp alternator-Optima Yellow Top up from-1/0 gauge going to mono amp-6 gauge going to mids/highs amp-Big 3 done. 04 QC/LB, 4WD, 305/555 HO CTD, 6" Lift, 37x13. Includes bracket, bolts, idler pulley, and belt Second location fits large case GM. Its Briggs and Stratton engine is durable and reliable to Warranty Info. Make sure charge wire is proper size. 1 MB Size: 2. If you draw more than 1200 watts (or whatever your alternator can produce) for an extended period of time, you also run the risk of ending up with a dead battery, even though your truck was idling. Different diameters of pulleys will affect the charging Sep 9, 2023 · Factors That Determine the Size of Alternator Needed. You Save: $ 428. A good 2nd battery will help alot. Midland Diesel rebuilt 5221 Blue Label IP W/ULSD Upgrade & rebuilt Bosch injectors Power your household essentials – including lights, your refrigerator and computer – with this Brute® 3,500 watt portable generator. The part number that starts with F3UZ is the 130 amp, and the F1TZ is the 95 amp. 00. MSRP: Now: $249. If resistance is greater than 0. Jul 24, 2010 · PABowhunter4life. 4v = ~248A 248A + 75A (run the car) = 323A. This Item: Generac iQ3500 Inverter Generator, 3500 Surge Watts, 3000 Rated Watts, Electric Start, Model# 7127 $999. In the event a short would occur and the fuse blows, then the alternator. Aug 16, 2006 · Aug 16, 2006. Mark Allen. Dec 30, 2011 · 190 Amps x 12 Volts = 2,280 Watts of power (2. The output should be 50 percent greater than the draw. . Jun 17, 2014 · I'm using a tram 3500 magnetmount coax passed through the third brake light gonna be running an rci2950 pushing a Texas star 250 pushing a homemade by me 750 watt amp will be building me a console out of wood to go between the front seat and the pull out tray under the radio just have the cb in right now it is my company truck but I am out injured right now so I can't take pics yet Description. Bottle See Sale Price in Cart May 13, 2009 · May 13, 2009. whats the cheapest complete HO alternator i could get? thats good though PS903500: 3500 Watt Generator. Jul 11, 2022 · It is important to keep in mind the output of an alternator is engine RPM dependant. Mercedes-Benz. Inside the home, they are likely going to be used as a backup power source. A 65" LED TV typically draws 100 watts or less. No, you cannot. So, for a 2000 watt amp, a 2500-3000 amp alternator would be a safe bet. Understanding these factors will help you choose the right alternator size to meet your system’s power requirements. Ultra-Quiet - Advanced inverter technology. Running your generator safely during a storm. You can tailgate with a normal load using this generator of 3500 watts. The gas consumption of a 3,500-watt generator can vary depending on its load. Recently Viewed. 50 Toyo Open Country MT on 20x10 BMF SOTA 8, MBRP 5", GDP Power-Flo, GDP Air Boss, GDP Grid Delete, IceBox Intake, Air Dog 150, ATS Pulse Flow Manifold, BD The alternator should be capable of 5 to 7 x the drive Input KVA. Save Share. 1 volt . starting wattage of the Generator. Jun 27, 2022 · Generally, a modern car alternator can produce up to 150-200 Amps at 13. It provides just enough power to keep essential appliances running smoothly. Anywhere near that much power on your highs and you'll develop tinnitus in a week haha. Oct 12, 2022 · While a 3500-watt generator won’t be able to meet the needs of an entire household at once, it can power a variety of appliances independently. This unit features a solid copper positive rectifier plate, with (6) oversize 65 amp press fit diodes for great durability in daily driven applications. If you are running what you say. 8 Volts, which is around 2,000-2,400 Watts. 9 / 13V = 256A from you 12V system. If you looked up the size of your car’s alternator you might be looking at this Jun 16, 2022 · For Tailgating. 5 159. 6 Kw) You could pony a second cable on both power and ground like dozer suggested. 1999 Dodge Durango SLT, the engine is a 5. Foretravel tag axle 40 ft. A 7500-watt generator has enough power to run many essential household appliances during a power outage. 1 MB Copy Link to PDF Download PDF. 2l 2012 denali has a 140 amp alt. The stock alternator outputs 160A, so my system would be using up 88% of my alternator's power, which would be fine if there wasn't a car needing to be powered. Consult Experts and Resources: Conclusion. I accidentally purchased disc rotors and brakes for the rear of my jeep. The supply to the Inverter, Soft Start or DC Jul 12, 2020 · When your inverter is drawing 1200 watts, your alternator will be delivering full output. Yes, a Predator 3500 generator can run a camper. Fully-enclosed design for less noise. Aug 27, 2023 · 1,200 W. These are much more appliances to run instead of what a 3500-watt generator can run. For your own convenience, it’s helpful to know the order in which items or appliances need power. #4. Mercedes-Benz of Richmond. If you need a new alternator or other charging system parts, you can shop our selection of replacement alternators, car batteries, and starters to find the parts you need to make your repair. Rugged and affordable, it also features a 120V/30A RV outlet so you don’t have to rough it on your next camping trip. All of the outlets, buttons, and switches are lined out neatly and are Sep 7, 2016 · Hey there. Jun 11, 2018 · Hemi 5. 5 V, current draw = total amplifier output/ alternator votlatge = 1,250/13. In the event of a blackout, most homeowners would want to power a refrigerator, freezer, and essential lighting, which collectively consume around 1000 watts. The fuse is integrated in the wiring harness. If you have a sound system with a maximum power output of 1000 to 1500 watts, you will need an alternator with an output of at least 100 amps. Taking a closer look at the Predator 3500 review, you will notice that the command center is front and center. There is no doubt this one will need an engine as there is a large hole in the crankcase and the piston rod is now on display. This 320 amp, large case hairpin high output alternator features twin finned rectifier assemblies and 12 huge press fit diodes for outstanding durability. Using your link and instructions I was able to find out that it is a 120 amp alternator. $791. For a DC drive - Input Current is DC Current x 0. 2007 Chevy Dually CC 4X4 D/A LBZ EFI-Live ):h. Hence, it's best for work sites with only two or three people working at the same time. However, you should review your camper’s What number of volts should my alternator output? A minimum of 13 volts should be read in the voltage. It directly inputs to the BCM. The good news is that a generator of this Every air conditioner is different, but according to Kohler, a typical window unit will require approximately 5100 watts to start and around 1700 watts to run. One final way to estimate your vehicle’s electrical load is to check the accessory fuses. Nov 8, 2015 · Currently my 6. The surging usually comes about because one of the circuits in the carb is Inverter generators typically have a surge wattage well over the 3,500 mark. Class A/B (~50% efficiency) - <250 watts. So my question is May 7, 2016 · Oct 1, 2017. 2l DUAL BRACKET. But that equates to roughly 16 amps at 120v. I have an off topic question I wonder if you might know the answer to. First, determine the amperage needed for the 2000 watt amp by dividing the wattage by the voltage. PS903500: 3500 Watt Generator. Watch on. 1 219 3 Jun 14, 2010 · Total it will be from 2000-2500 watts RMS, what will i need to get it done safely? I have a Honda civic with a 90 amp alternator stock. You can use either one. How ever many amps your current alt puts out, (example 80 amps) just add up the fuse ratings on all your after market equipment,what ever that total comes to add it to the factory alt output (example amps, EQ's, Crossover's, etc add up to 70 amps) Then you will need roughly 150 amp alt. The fans will draw about 44 to 46 amps when both are running full tilt. 5-14. Make certain the ground wire is of proper size. you can get by with only (2) batteries and that (1) 220 amp alternator but what you really should do is get a 300amp alternator (or run dual 220s) and a FEW d3100s. 1/2" impact will zip the nut off and easily. Make sure that this total is under the 4,375 max. Here are ten basic household items that can be powered by a generator. According to my VIN and the truck's build sheet: BAZS 136 Amp Alternator. A 3,500-watt generator offers a decent amount of power to run a couple of appliances at once. My system will be 5000 watt rms I have 2x 3300 amp xs power batteries They have 0 gauge ofc wiring I have 0 gauge ofc big three done I've heard having to big an alternator is a bad idea because u won't put out any amps at an idle. Shop for the best Alternator for your 2016 Ram 1500, and you can place your order online and pick up for free at your local O'Reilly Auto Parts. Example. Team GP DUAL Chevrolet Trailblazer 4. Edited April 2, 2010 by J00bles. 10. Mar 27, 2015 · Add up the total electrical draw and compare with your alternator’s rated output. Jul 14, 2023 · Below is a calculator that will help you determine the size of alternator your vehicle's electrical system needs. 2000 watts: upgrade main battery, 1 rear battery; 3500 watts: upgrade main battery, 1-2 rear batteries Make sure that this total is under the 3,500 running wattage of the Generator. "K68's" are std 105A. Larger engines will require larger alternators, and higher electrical loads will require higher output ratings. Sep 17, 2023 · 3500 – Watt generators are the most popular class of generators that can run your essential home appliances like refrigerator, Window AC, Heater, Sump Pump, etc. 3L- 6. 99. Find the single highest starting watts for the selected items and add to the total. The ratio is the result of dividing the diameter of the crank pulley by the alternator pulley. But sometimes even modestly powered systems can stress your car's electronics, especially during a sub amp's burst of energy when it produces the sound of the beat. The 120V MAX* household outlets allow you to power your home during a power outage, while the 120V MAX*/30A RV outlet allows you to take some of the conveniences of home on your next RV trip. Warranty Info. Mar 3, 2023 · How To Calculate Battery Capacity For Inverter. Turn on the headlights, the radio, and the air conditioning to put a load on the alternator. Of course your 1 AWG charging wire will not support that rate, especially when you consider the length of the cable between the alternator and batteries. 1086 posts · Joined 2003. 500 hp/1550 ft/lbs ism 1455 watts on the roof. May 1, 2021 · Thanks very much for this info. Normal duty cycle is between 5– 95 percent. Hello, I am looking for information on an older Sears Craftsman 3500watt alternator. 7L as 6. Between 0–5 percent and 95–100 percent are for diagnostic purposes. 2016 Chevy Dually CC 4X4 D/A LML. 6,550 W. 0 146. Amp Draw = Wattage / Voltage. This should be more than enough to run a variety of essential electronics within a camper, such as lights, televisions, microwaves and small air conditioners. What Kind of Alternator Do I Need for Car Audio? Calculating the Size of an Alternator for Your Car Audio System. It creates a 5-volt pulse width modulation (PWM) signal of 128 Hz with a duty cycle of 0–100 percent. 800 watt to mids/highs and 1500 for a sub amp. Easily powers most RV AC units up to 13,500 BTU. #3 · Jul 24, 2010. Choose an Alternator: 5. You can power up a television, laptop, and lights easily and even a mini-fridge to store food and drinks. The amp ratings, although slightly higher than the highest draw of each component, will give you a good estimate of Jun 11, 2018 · I have a 2014 ram 1500 SXT equipped with a 180 amp alternator. 4v = 2,160w the alternator can supply. The alternator should be capable of 5 to 7 x the drive Input KVA. Aug 30, 2022 · Assume that the 1,000 watt amplifier is working at full power and has an efficiency of 80%, the actual power consumption of the inverter is 1000/80% = 1,250 watts. To produce 60hz power, your engine is running at either 1800 or 3600 rpm depending on whether it's a four pole or two pole generator - although some portable gensets do 'idle' until a load is applied, I see no sign that yours is set up to do that. 180 amps x 12volts = 2160 Watts. Determine Total System Wattage: 2. Example: A 10,000-watt generator on a 220V voltage draws 10,000W/220V = 45. Nov 18, 2009 · If you have EFI and and an MSD box it is a necessity. 82 = AC Current for the armature. 7 183. That's a lot You would need good quality large wires and kept short (to the inverter). Part Number: 68271770AA. #8 · Aug 11, 2012. 2L. Fits the following Vehicles: Feb 17, 2015 · Remove the correct pulley Off the bad alternator and install it on the new unit. 2006 GMC 2500HD 4x4 CCSB Duramax/ZF. You can make it a less draw current most of the time by use of a speed controller (PWM) and possibly get away with a 63A alternator if you don't have EFI. What size alternator should I get. 5 90. SER# 0342199 115/230v. For instance, running a refrigerator, washing machine, dishwasher, and water pump simultaneously is not Nov 8, 2015 · 2x hertz hdp 4 1000 watt rms for (2000 watts total at 4 ohm) What helix amp? That being said a lot of people's definition of "music" is a clipped 30 hz sine wave with some 80 IQ knuckle head grunting about committing crimes and his genitals. 2,950 W. 15. Jul 23, 2019 · SoftStartRV advertises it can reduce the current required to start your RV’s air conditioning by up to 70%. It doesn't hurt to use a wire size that's larger than necessary, but it will usually cost more and can be more difficult to install. Convert Watts to Amperes: 4. Here is the full step-by-step calculation of how to determine the wire size for a generator: Divide the generator’s wattage by the voltage to calculate the amp draw. 6Kw) So now looking at the change of the charging system 140 Amps x 12 Volts = 1,680 Watts of power (1. 5 and 14. Alternator Pulley. 1 This price excludes a refundable manufacturer's core charge. Add to CartCompare. A good alternator should output between 13. $236. Jun 4, 2010 · Those are volts. The over-sizing is necessary because alternators are a soft supply and rely on the alternator electronics to automatically regulate the Voltage. GP Car Audio. Like. Ideal for work or play, in a lightweight and compact package. 1985 GMC 6. #1. I never upgraded the Big 3, but I did get a top notch battery & upgraded from a stock 80 amp alt to a 160 amp alt. Vehicle Specific. You should have a stamp on the alternator with a part number and amperage. Jul 2, 2013 · the highest I could clamp power wise was about 1000 CLEAN watts off the stock alternator with a 4000w RMS Crescendo bc3500d, wired at 1 ohm, I have since upgraded to a direct swap mechman 270 model, tested at 325 amps @1800 rpm and added 2 6,000 amp batteries and another 50 feet or so of 1/0 wire, now after box rise I clamp in the 3,000 watt area, clean power, with about 1/10 of a volt in Apr 2, 2010 · wow. 2000 watt: This generator can run a 70 – 85 amp welder. Does anyone know what the maximum inverter size ( in watts) one could run with this set up? I doubt it is as simple as. lhgarbkeggkrtabfcykz