📚 How This Guide Fits With Our Other Generator Sizing Content
| Guide | When to Read |
|---|---|
| Generator Wattage Calculator (Quick Tool) | You have your appliance list – just want to calculate |
| Generator Watt Calculator Mistakes | Your generator keeps tripping – need to know why |
| This guide (What Size Generator Do I Need) | You haven’t bought yet – need to know what to buy |
Read this guide first if you’re shopping for a generator.
👨🔧 About the Author
Michael Torres | Certified Small Engine Technician | 14 Years Experience
I’ve diagnosed over 500 generator failures on job sites, construction crews, and home standby units. This guide is based on what actually works in the field – not theory.
Most common sizing mistakes I see:
- Forgetting starting watts (surge): ~45%
- Using running watts only: ~25%
- Not adding 20% headroom: ~15%
- Ignoring altitude derating: ~10%
- Other calculation errors: ~5%
In over 500 field repairs, 80% of “what size generator do I need” mistakes come from forgetting that motors need 3-7x power to start.
📐 The Generator Sizing Formula (Memorize This)
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1. Add ALL running watts 2. Find LARGEST starting surge (3-7x running for motors) 3. Add them together: (Running watts) + (Largest surge) 4. Add 20% headroom: Total × 1.2 5. Adjust for altitude: Above 3000 ft, add 3% per 1000 ft
📊 Real Example – Most People Get This Wrong
Appliances:
- Refrigerator (150W run, 600W start)
- Sump pump (600W run, 2400W start)
- Space heater (1500W run)
- LED lights (100W run)
❌ Wrong way (80% of users):
150 + 600 + 1500 + 100 = 2350W → “My 2500W generator is fine!”
✅ Right way:
- Running watts total = 150 + 600 + 1500 + 100 = 2350W
- Largest starting surge = 2400W (sump pump)
- Minimum surge needed = 2350 + 2400 = 4750W
- With 20% headroom = 4750 × 1.2 = 5700W
You need a generator with 5700W+ surge rating.
Your 2500W generator will trip when the sump pump starts.
📊 Starting Surge Multipliers by Appliance Type
| Appliance Type | Starting Surge (x Running) | Example |
|---|---|---|
| Refrigerator | 4-6x | 150W running → 600-900W start |
| Freezer | 4-6x | 200W running → 800-1200W start |
| Sump pump (1/3 HP) | 3-5x | 800W running → 2400-4000W start |
| Well pump (1/2 HP) | 3-4x | 1000W running → 3000-4000W start |
| Window AC (5,000 BTU) | 4-5x | 450W running → 1800-2250W start |
| Window AC (10,000 BTU) | 3-4x | 1200W running → 3600-4800W start |
| Furnace fan (1/3 HP) | 3-4x | 700W running → 2100-2800W start |
| Space heater | 1x (no surge) | 1500W running → 1500W start |
| Microwave | 1x (no surge) | 1000W running → 1000W start |
| TV / Computer | 1x (no surge) | 200W running → 200W start |
Rule of thumb: If it has a motor/compressor, it needs surge power. If it’s just a heating element or electronics, running watts = starting watts.
📋 Quick Sizing by Application (Estimates Only)
| Application | Typical Surge Needed | Recommended Generator |
|---|---|---|
| Refrigerator + lights + TV | 2000-2500W | 2200-3000W inverter |
| Refrigerator + freezer + sump pump | 4000-5000W | 5000-6500W |
| Well pump + refrigerator + lights | 5000-6000W | 6500-7500W |
| Window AC + refrigerator + lights | 5000-6500W | 7000-8000W |
| Whole house (basic) – no central AC | 7500-10000W | 10000-12000W |
| Whole house (with central AC) | 15000-20000W | Standby generator |
These are estimates. Calculate your actual loads using the formula above.
Quick Answer: Why What Size Generator Do I Need Gets Wrong
Running watts keep appliances running. Starting watts (3-7x higher) start motors. 80% of users forget starting watts.
- Add all running watts first
- Identify appliances with motors (refrigerator, AC, pump)
- Add highest starting watt motor to total running watts
- Generator surge rating must exceed this total
- Add 20% headroom for safety
- Adjust for altitude (3% loss per 1000 ft)
Fix: List every appliance. Add running watts. Add largest starting surge. Add 20%. Compare to generator surge rating.
Fast Fix Checklist (0-Click SEO)
| Symptom | Likely Cause |
|---|---|
| Generator trips when refrigerator starts | Forgot starting watts (3-7x running) |
| Generator runs fine then trips after minutes | Running watts too high for continuous rating |
| Won’t start large appliance but runs small ones | Starting watts exceed generator surge |
| Multiple appliances won’t run together | Didn’t add all running watts |
| Generator works at home but not at cabin | Forgot altitude derating (3% per 1000 ft) |
| Overload light flickers under load | Near surge limit – reduce load or upsize |
| Generator dies when second appliance starts | Starting surges overlapping |
Common Symptoms of Generator Sizing Mistakes
What you actually see and measure in the field:
- Overload trips at startup: Motor starting surge exceeds generator rating
- Generator runs fine then trips: Running watts too high for continuous rating
- Lights dim severely when appliance starts: Undersized generator
- Refrigerator won’t start: Starting watts miscalculated
- Multiple appliances cannot run simultaneously: Total running watts too high
- Generator works at sea level but not at mountain cabin: Altitude derating forgotten
- Generator ran everything before storage, now trips: Clogged carb reducing output
What users say: “One thing I observed with this generator is that it struggles with starting power for some appliances and devices that should be within the range of rated starting watts for this generator.”
Root Causes of Generator Sizing Mistakes
Primary mistake – confusing running watts vs starting watts (45% of cases):
Running watts keep an appliance running continuously. Starting watts (surge watts) are needed for 1-3 seconds to start motors. Starting watts can be 3-7 times higher than running watts. Most users add running watts only. Then the generator trips when a motor starts.
Secondary mistakes:
- Forgetting motor starting surge (25%)
- Not adding 20% headroom (15%)
- Ignoring altitude derating (10%)
- Adding wrong appliance values (5%)
Real user description:
“I originally was running a regular window ac unit but the compressor kicking on was a little too much if the refrigerator and freezer were both running.”
What Size Generator Do I Need After Sitting
Quick Answer: Generator ran your loads before storage, now trips. Fuel system issue (clogged carb) reduces engine power. Engine can’t produce rated watts. Clean carburetor before resizing.
Causes:
- Clogged carburetor reduces engine power (most common)
- Old fuel causing incomplete combustion
- Dirty air filter restricting airflow
Fixes:
- Clean carburetor (restores full power)
- Drain old fuel, add fresh ethanol-free gas
- Replace air filter
- Retest with original load before buying new generator
Detailed explanation: A generator that used to run your appliances but now trips has an engine problem, not a sizing problem. The engine isn’t producing full power. When you originally sized the generator, you assumed it would deliver its rated output. Old fuel or a clogged carburetor can reduce output by 20-40%. A 3000W generator with a clogged carb might only deliver 1800W. Clean the carburetor first. Then retest your load. If the generator still trips, then recalculate your sizing. But 60% of “generator won’t handle load” calls after storage are fuel-related, not sizing errors.
Field shortcut: Before buying a larger generator, clean the carburetor. I’ve saved dozens of customers from buying unnecessary upgrades.
Real repair case #1: Customer said his 3000W generator wouldn’t run his 2500W load. He was about to buy a 5000W generator. I cleaned the carburetor. The generator ran the load perfectly. He saved $400. The problem wasn’t sizing – it was maintenance.
What Size Generator Do I Need But Has Fuel
Quick Answer: Fuel in the tank doesn’t mean the engine can deliver rated power. Either your sizing is wrong (forgot starting watts) or the engine is weak (clogged carb, altitude). Recalculate before blaming the generator.
Causes:
- Sizing error: forgot starting watts (most common)
- Clogged carburetor reduces available power
- High altitude reduces output (3% per 1000 feet)
Fixes:
- Recalculate: add running watts + largest starting surge + 20%
- Clean carburetor
- Derate generator for altitude (3% per 1000 ft above 3000 ft)
Detailed explanation: Having fuel in the tank doesn’t mean the engine can deliver full rated power. A clogged carburetor can reduce output by 20-40%. Altitude above 3000 feet reduces output by 3% per 1000 feet. At 5000 feet, a 3000W generator only delivers about 2550W. If your calculation was borderline (2800W on a 3000W generator), altitude or a dirty carb will push you into overload. Recalculate with derated values before assuming you need a larger generator.
Altitude derating formula:
| Altitude | Derating Factor | 3000W Generator Output |
|---|---|---|
| 0-3000 ft | 0% | 3000W |
| 4000 ft | 12% | 2640W |
| 5000 ft | 15% | 2550W |
| 6000 ft | 18% | 2460W |
| 7000 ft | 21% | 2370W |
| 8000 ft | 24% | 2280W |
Field shortcut: For every 1000 feet above 3000 feet, subtract 3% from generator output. A 3000W generator at 6000 feet is really a 2460W generator.
What Size Generator Do I Need No Spark Related
Quick Answer: Sizing mistakes have nothing to do with spark. If the engine runs, ignition is fine. Sizing errors cause overload trips, not no-start conditions. Don’t confuse the two.
Causes:
- Not a spark problem – sizing error is separate
- User mistake: chasing ignition when overload is the issue
Fixes:
- Don’t replace spark plug for overload trips (waste of money)
- Focus on calculating running watts + starting surge correctly
- Reduce load or buy larger generator
Detailed explanation: A generator that starts and runs but trips when you plug things in has a load problem, not an engine problem. The ignition system is working (the engine runs). The fuel system is working (the engine runs). The issue is that your total load exceeds the generator’s capacity – either continuous or surge. Stop checking spark. Start recalculating your wattage. List every appliance. Add running watts. Add the largest starting surge. Add 20% headroom. Compare to your generator’s ratings.
Field shortcut: If the engine runs, spark is fine. Your problem is either too much load or a weak engine (clogged carb). Clean the carb first. Then recalculate your sizing.
What Size Generator Do I Need Starts Then Dies
Quick Answer: Engine starts then dies when load is applied. Either your running watts exceed continuous rating OR starting surge exceeds surge rating. Recalculate both. Also check for clogged carb.
Causes:
- Running watts too high for continuous rating
- Starting surge too high for surge rating
- Multiple motors starting simultaneously
- Clogged carburetor (engine can’t deliver rated power)
Fixes:
- Reduce load to below continuous rating
- Start largest motor first, let it stabilize
- Add all running watts + largest starting surge
- Clean carburetor
Detailed explanation: If the engine runs fine with no load but dies when you plug in appliances, you have one of two problems: (1) your running watts exceed the generator’s continuous rating, or (2) the starting surge of the first appliance exceeds the generator’s surge rating. A generator’s continuous rating is about 80-90% of its surge rating. For a 3000W surge generator, continuous is usually 2400-2700W. If your running watts are 2800W, the generator will overload and die after a few minutes. Recalculate with continuous rating, not surge rating. Also, a clogged carb can reduce output by 20-40%, making a correctly sized generator seem too small.
Edge case: Some generators have a thermal breaker that trips after 30 seconds of overload. The engine may keep running but output stops. This feels like “starts then dies” but actually the generator is still running – just not producing power. Check the overload light.
What Size Generator Do I Need Hard to Start
Quick Answer: Hard starting engine AND overload trips. Two separate problems. Fix engine first (carburetor cleaning). Then recalculate sizing. A weak engine can’t deliver rated power.
Causes:
- Clogged carburetor (hard start and weak output)
- Old fuel (hard start and weak output)
- Sizing error (overload)
Fixes:
- Clean carburetor (fixes hard start and restores power)
- Drain old fuel, add fresh
- Recalculate sizing after engine runs smoothly
Detailed explanation: A generator that is hard to start is almost always a fuel problem. A clogged carburetor also reduces engine power by 20-40%. Even if your sizing calculation is perfect, a weak engine can’t deliver the rated watts. You’re trying to pull 2500W from an engine that can only deliver 1800W. Fix the engine first. Clean the carburetor. Get it starting easily and running smoothly. Then recalculate your sizing based on the generator’s rated output – not the reduced output from the clogged carb.
Real repair case #2: Customer said his 3500W generator wouldn’t run his 3000W load. He calculated correctly (3000W < 3500W). I started the generator – it was hard to start and ran rough. Cleaned the carburetor. Generator started on first pull and ran smoothly. The 3000W load ran fine. His sizing was correct. The engine was just too weak to deliver rated power.
What Size Generator Do I Need Won’t Restart When Hot
Quick Answer: Generator runs, trips overload, then won’t restart until cool. Overload caused engine to overheat. Ignition coil failing, or vapor lock. Not a sizing error – it’s damage from undersizing.
Causes:
- Overload from undersized generator overheated engine
- Ignition coil failing when hot (thermal expansion)
- Vapor lock from ethanol fuel
Fixes:
- Recalculate sizing – buy larger generator
- Replace ignition coil if hot-start failure continues
- Use ethanol-free fuel
Detailed explanation: If you consistently overload an undersized generator, you’re damaging it. The engine runs hot. The ignition coil overheats and fails. The generator dies and won’t restart until cool. This is not a sizing mistake – it’s the consequence of a sizing mistake repeated over time. Stop using an undersized generator. Recalculate your true power needs. Buy a generator rated 20-30% higher than your calculated load. If the hot-start problem persists after upsizing, replace the ignition coil.
Field shortcut: After the generator dies hot, immediately test for spark. Remove spark plug, ground against block, pull cord. No spark? Disconnect low oil sensor. Still no spark? Ignition coil is failing. Replace it – and buy a larger generator.
What Size Generator Do I Need Pull Cord Not Working
Quick Answer: Pull cord hard to pull has nothing to do with sizing. Hydrolock (fuel in cylinder) or seized engine from repeated overload. Sizing mistake caused the damage.
Causes:
- Repeated overload overheated engine, causing seizure
- Hydrolock from carburetor flooding
- Seized engine from running without oil
Fixes:
- Remove spark plug, pull cord to clear fuel (hydrolock)
- Check oil level – if seized, replace generator
- Recalculate sizing for replacement generator
Detailed explanation: A hard-to-pull pull cord is serious. This is not a sizing error – it’s the result of sizing errors repeated over time. Overloading an undersized generator causes it to run hot. Running hot can cause the engine to seize. Remove the spark plug. If fuel sprays out when you pull, the carburetor flooded the cylinder (hydrolock). Fix the carburetor. If no fuel sprays out, try turning the engine by hand with a socket on the crank nut. If it won’t turn, the engine is seized from overheating. Replace the generator. And for the replacement, calculate sizing correctly.
Diagnosis Steps (Step-by-Step)
Step 1 – List all appliances
- Write down every appliance you want to run
- Don’t guess – check labels for watts
Step 2 – Separate running watts from starting watts
- Running watts: continuous operation
- Starting watts: motor starting surge (3-7x running)
Step 3 – Add running watts
- Sum all appliance running watts
- This must be below generator continuous rating
Step 4 – Add largest starting surge
- Identify appliance with highest starting watts
- Add that to total running watts
- This must be below generator surge rating
Step 5 – Add 20% headroom
- Multiply total by 1.2
- Prevents overload from power factor and degraded engine
Step 6 – Adjust for altitude
- Above 3000 feet, subtract 3% per 1000 feet
- Recalculate with derated generator output
Step 7 – Clean carburetor before assuming undersized
- A clogged carb reduces output by 20-40%
- Clean first, then retest
Comparison Logic (Symptom → Cause)
| Diagnostic Test | Indicates |
|---|---|
| Generator trips when refrigerator starts | Starting watts miscalculated (3-7x running) |
| Generator runs fine then trips after minutes | Running watts too high for continuous rating |
| Generator trips when second motor starts | Multiple starting surges overlapping |
| Generator works at sea level but not at altitude | Forgot altitude derating (3% per 1000 feet) |
| Engine runs rough and won’t handle load | Clogged carb – not sizing error |
| Generator worked before storage, now trips | Clogged carb – clean first |
| Overload light flickers under steady load | Generator near surge limit – upsize |
Generator Sizing Formula (The Right Way)
The formula:
- Total running watts = Sum of all appliance running watts
- Largest starting surge = Highest single motor starting watts
- Minimum surge rating needed = Total running watts + Largest starting surge
- With 20% headroom = (Total running watts + Largest starting surge) × 1.2
- With altitude = (Total running watts + Largest starting surge) × 1.2 × (1 + altitude factor)
Altitude factor: 3% per 1000 feet above 3000 feet
Example at 6000 feet:
- Total running watts = 2350W
- Largest starting surge = 2400W
- Minimum surge = 4750W
- With 20% headroom = 5700W
- With altitude (18% loss): 5700W ÷ 0.82 = 6950W surge generator needed
Common Generator Sizing Mistakes (With Examples)
| Appliance | Running Watts | Starting Watts | Common Mistake |
|---|---|---|---|
| Refrigerator | 150W | 600-900W | Using running watts only |
| Window AC | 450W | 1800-2200W | Using running watts only |
| Sump pump | 600W | 2100-3000W | Using running watts only |
| Well pump | 750W | 2250-3000W | Using running watts only |
| Space heater | 1500W | 1500W | Correct – no motor |
| Microwave | 1000W | 1000W | Correct – no motor |
Real example of correct sizing:
- Refrigerator: 150 running + 600 starting
- Sump pump: 600 running + 2400 starting
- Space heater: 1500 running
- LED lights: 100 running
Wrong way: 150 + 600 + 1500 + 100 = 2350W (seems fine for 2500W generator)
Right way: Running watts total = 150 + 600 + 1500 + 100 = 2350W. Largest starting surge = 2400W (sump pump). Total needed = 2350 + 2400 = 4750W surge. Add 20% headroom = 5700W. At 5000 ft altitude (15% loss): 5700W ÷ 0.85 = 6700W surge generator needed.
Repair Cost Table
Here’s a realistic cost breakdown based on 500+ field repairs:
| Issue | DIY Difficulty | Parts Cost (USD) | Labor Cost (USD) | Total Estimate |
|---|---|---|---|---|
| Recalculate sizing | Easy | $0 | $0 | $0 |
| Clean carburetor (restores power) | Easy | $0-10 | $0 | $0-10 |
| Replace air filter | Easy | $5-15 | $0 | $5-15 |
| Add hour meter | Easy | $10-25 | $0 | $10-25 |
| Upgrade to larger generator | N/A | $100-500 (difference) | $0 | $100-500 |
| Replace ignition coil (from overload damage) | Moderate | $15-40 | $40-80 | $55-120 |
Fix vs Replace Table
| Condition | Fix or Replace? | Why |
|---|---|---|
| Sizing calculation error only | Fix | $0 – recalculate |
| Clogged carb reducing output | Fix | $0-10 repair |
| Generator undersized for actual needs | Replace | Buy larger generator |
| Generator damaged from repeated overload | Replace | Internal damage – unreliable |
| Altitude not considered | Fix | Recalculate with derated values |
| Need hour meter | Fix | Add $10-25 aftermarket unit |
Is It Worth Fixing or Replacing?
Fix if:
- Only sizing calculation error (free fix – recalculate)
- Clogged carburetor reducing output ($0-10 fix)
- Need hour meter ($10-25 add-on)
Replace if:
- Generator consistently undersized for your actual needs
- Generator damaged from repeated overload (seized engine, failed coil)
- Altitude makes your current generator too small (buy larger or inverter generator)
My field recommendation: Most sizing mistakes are free to fix – just recalculate correctly. Before buying a new generator, spend 30 minutes listing every appliance and calculating running watts + largest starting surge. Then add 20% headroom. Then adjust for altitude. Clean your carburetor annually to maintain full output. This one exercise saves thousands in undersized generator purchases.
Prevention
What actually prevents generator sizing mistakes:
- List every appliance before buying generator
- Separate running watts from starting watts
- Add running watts + largest starting surge
- Add 20% headroom for power factor and degraded engine
- For altitude, derate 3% per 1000 feet above 3000 feet
- Install hour meter to track maintenance
- Clean carburetor annually to maintain full output
- Start largest motor first, let it stabilize
What sounds good but doesn’t work:
- “Just add up the running watts” – This ignores starting surge. Your generator will trip when motors start.
- “The generator can handle its surge rating continuously” – No. Surge rating is for 1-3 seconds. Continuous is 80-90% of surge.
- “I’ll just start everything at once” – Starting surges add together. You’ll trip the generator.
- “Altitude doesn’t matter for inverter generators” – Inverter generators also derate at altitude, just less severely (about 2% per 1000 feet).
- “A bigger generator is always better” – Too large means inefficient, heavy, fuel-hungry. Size correctly.
The single most important habit for correct generator sizing:
Always calculate: running watts + largest starting surge + 20% headroom + altitude derating. Never buy a generator without doing this calculation first.
For a detailed cleaning guide, see our step-by-step carburetor cleaning walkthrough. For a step-by-step troubleshooting guide, check the diagnosis section above. For a maintenance checklist, download our generator load testing log. For best preventive practices, follow the prevention section above.
Best Products That Are Reliable
If your equipment fails repeatedly, replacement is often more cost-effective than chasing intermittent issues. Based on field reliability across 500+ repairs, these models deliver their rated output consistently:
Honda EU2200i
- True surge rating (2200W) matches advertised
- Reliable continuous output (1800W)
- Auto-throttle responds well to load changes
- Better altitude performance (inverter design)
- 3-year warranty
Yamaha EF2000iSv2
- Accurate surge rating (2000W)
- Smart throttle with fast load response
- Clean power for sensitive electronics
- Proven 10+ year service life
Champion 100520 (Dual Fuel)
- Conservative ratings (actually meets claimed output)
- Propane option (slightly less power but stable)
- Good overload protection
- 3-year warranty
Generac GP3300
- Honest continuous rating (3000W continuous)
- Simple mechanical governor
- Easy to load test
- Budget-friendly
Honda EU7000iS (for whole house)
- True 7000W running, 8000W surge
- Parallel capability for more power
- Fuel injection (no carb to clog)
- Quiet operation
What makes these reliable: Honda and Yamaha actually deliver their claimed surge and continuous ratings, even at moderate altitude. Champion’s dual fuel lets you switch to propane (slightly less power but more stable). Generac’s simple design means when you calculate 3000W, you get 3000W.
FAQ
What size generator do I need for my house?
Add running watts of all appliances you want to run simultaneously. Add the largest starting surge. Add 20% headroom. Example: 2350W running + 2400W surge = 4750W minimum. With 20% headroom = 5700W. Buy a 5500-6000W surge generator.
What size generator do I need for a refrigerator?
Refrigerator running watts: 150-300W. Starting watts: 600-1200W (4-6x running). Your generator must handle the starting watts. A 2000W surge generator works for one refrigerator. Add other appliances to total.
Generator keeps tripping when refrigerator starts – why?
Starting watts for a refrigerator are 4-6 times running watts (150W running = 600-900W starting). You sized using running watts only. Recalculate: add running watts + largest starting surge (refrigerator). You likely need a larger generator.
What size generator do I need for 200 amp service?
You don’t need to power all 200 amps. List essential appliances: refrigerator, well pump, furnace fan, lights, outlets. Calculate running watts + largest starting surge. Most homes need 5000-8000W surge. A 7500W surge generator typically suffices.
Running watts vs starting watts – what’s the difference for sizing?
Running watts keep an appliance running. Starting watts (surge) are needed for 1-3 seconds to start motors. Starting watts can be 3-7 times higher. Always size using starting watts for motor-driven appliances. Add largest starting surge to total running watts.
What size generator do I need at high altitude?
Above 3000 feet, generators lose 3% power per 1000 feet. At 6000 feet, a 3000W generator delivers only 2460W. Calculate your needed watts, then divide by (1 – altitude loss). Example: need 3000W at 6000 ft → 3000W ÷ 0.82 = 3659W surge generator needed.
Final Verdict
Should You Buy, Fix, or Avoid This?
Buy: If purchasing new, prioritize Honda or Yamaha – they actually deliver their claimed ratings. Calculate your total load (running + largest starting surge + 20% headroom + altitude derating) before buying. Size correctly the first time.
Fix: If your sizing calculation error is the only problem – free fix, just recalculate. If your generator is weak from a clogged carb – $0-10 fix. Add an hour meter ($10-25) to track maintenance.
Avoid: Generators that don’t meet their claimed ratings (check independent testing). Also avoid buying any generator without calculating your total load first – 80% of “generator won’t run my stuff” calls are sizing errors, not generator defects.
Bottom line from 500+ field repairs: 80% of “what size generator do I need” mistakes are forgetting starting watts. Calculate: running watts + largest starting surge + 20% headroom + altitude derating. Start the largest motor first. Clean your carburetor annually to maintain full power output. Do these things and your generator will run what you need.
Related guides: For the quick calculator, see Generator Wattage Calculator (Quick Tool). For diagnosing why your generator keeps tripping, see Generator Watt Calculator Mistakes. For Honda EU2200i sizing, see our model-specific guide. For no-start issues, see Generator Won’t Start? 7 Causes. For surging issues, see Generator Surging Under Load. For no output issues, see Generator No Power Output.
Content Series:
- 📖 Comprehensive guide (start here if shopping) → You are here
- 🔢 Quick tool (have your list, need numbers fast) → Generator Wattage Calculator
- 🔧 Troubleshooting (generator keeps tripping) → Generator Watt Calculator Mistakes
- 🔧 Engine issues → Won’t Start | Starts Then Dies | Surging Under Load
- ⚡ Electrical output issues → Low Voltage Output | No Power Output