Shore power is supposed to be the easy mode of RV life: plug in, everything works, batteries charge, A/C runs, outlets come alive. So when you hook up at a campsite (or at home) & the RV still acts like it’s off-grid, it’s frustrating fast.
The tricky part is that “shore power not working” can mean a few different things:
- No 120V outlets work at all
- Some outlets work, others don’t
- The A/C won’t run but lights still work
- Everything works, but the batteries aren’t charging
- Power is intermittent (works, then drops out)
If you’ve been asking, “Why Is My RV Shore Power Not Working?” this guide will help you pinpoint the most common causes, what you can safely check without guesswork, when it’s time for professional diagnosis, & how to prevent repeat issues.
Problem Overview: What Shore Power Actually Powers
Your RV has two main electrical worlds:
- 120V AC power (like a house): outlets, microwave, A/C, some water heater modes, some fridge modes
- 12V DC power (battery power): lights, water pump, furnace controls, slides, control boards, fans
When you plug into shore power, the RV should do two things:
- Feed 120V power to your breaker panel so AC appliances & outlets work
- Run the converter/charger, which supplies 12V power & recharges your batteries
That’s why an RV can sometimes have lights working (12V) while outlets don’t (120V), or outlets working while batteries don’t charge (converter issue). Understanding that split makes troubleshooting way more logical.
The Most Common Causes of Shore Power Not Working
1) The Campground Pedestal (or Home Outlet) Has No Power
It’s not glamorous, but it’s common. Pedestals get tripped breakers, bad outlets, loose wiring, or low voltage under load.
Clues:
- You plug in & get nothing
- A neighbor mentions power issues
- The pedestal breaker is tripped or won’t stay set
- Power works for a minute, then cuts out when A/C starts
If you have a surge protector/EMS (electrical management system), it may also refuse to pass power if it detects unsafe voltage.
2) Your Shore Power Cord or Plug Has a Bad Connection
A worn plug, loose blades, or heat-damaged connection can cause intermittent or total loss of power.
Look for:
- Discoloration on plug blades
- Melted plastic at the connector
- A “hot” plug or cord end after running A/C
- Power cutting in & out when the cord is moved
Loose connections are a big deal because they don’t just cause failure — they can overheat & damage the inlet, cord, or pedestal.
3) A Tripped GFCI Outlet Is Killing Part of the RV
Many RVs have one GFCI outlet that protects multiple downstream outlets (kitchen, bathroom, exterior, sometimes even the garage/storage outlet on toy haulers).
Clues:
- Some outlets work, others are dead
- The microwave works but the bathroom outlet doesn’t (or vice versa)
- You recently used an exterior outlet in damp conditions
A single tripped GFCI can make it feel like “half the RV has no shore power.”
4) Main Breaker or Branch Breaker Tripped in the RV Panel
If the main breaker trips, you’ll lose most or all 120V power. If a branch breaker trips, you might lose only the A/C, microwave, water heater electric mode, or a specific circuit.
Clues:
- You heard a “click” when turning something on
- The A/C tried to start & then everything died on that circuit
- Only one appliance/circuit is affected
5) The Converter/Charger Failed (So 120V Works, But Batteries Don’t Charge)
This one confuses people because the RV can look “powered,” but the battery slowly dies anyway.
Clues:
- Outlets work, but 12V lights get dim over time when unplugged
- Battery voltage doesn’t rise while plugged in
- Slides/water pump feel weak even on shore power
- You keep needing to jump or recharge batteries
A failed converter is a common answer to “Why Is My RV Shore Power Not Working?” when the real issue is “shore power isn’t charging my battery system.”
6) Transfer Switch Problems (Especially on Generator-Equipped RVs)
Many motorhomes & some trailers have an automatic transfer switch (ATS) that selects either generator power or shore power. If the transfer switch fails or gets stuck, the RV may not accept shore power even though the pedestal is fine.
Clues:
- Generator power works but shore power doesn’t
- Shore power works sometimes, but not consistently
- You hear buzzing/clicking near the ATS location
Transfer switch issues can be dangerous if connections are loose or arcing, so this is one that deserves professional attention.
7) Surge Protector/EMS Blocking Power (By Design)
If you use a portable or hardwired EMS, it may block power for:
- Low voltage
- High voltage
- Open ground
- Reverse polarity
- Frequency issues
Clue:
- The EMS shows an error code or warning
- Power won’t pass through, but the pedestal has “some” power
This isn’t a failure — it’s your device preventing damage.
8) Inverter Confusion (Power Where You Don’t Expect It)
Some RVs have an inverter that powers certain outlets even when you’re not on shore power (often TV outlets, kitchen outlets, or “inverter outlets”). That can make troubleshooting confusing:
- Some outlets work even when shore power is off
- Other outlets never work unless plugged in
Clue: outlets behave differently depending on inverter settings & battery state of charge.
What You Can Check Safely Before You Call for Service
Here’s a practical, low-risk checklist that covers the big wins first.
Step 1: Confirm the Pedestal/Outlet Is Actually Live
- Check the pedestal breaker (turn fully off, then on)
- Try a different receptacle (30A vs 50A if you have an adapter & the correct setup)
- If you have an EMS, read the code/message
If the pedestal is suspect, ask the campground to test it. A lot of “Why Is My RV Shore Power Not Working?” cases are really “the pedestal is lying.”
Step 2: Check Your RV Main Breaker & Branch Breakers
Inside your RV breaker panel:
- Verify the main breaker is on
- Reset any tripped breakers (off, then on)
If a breaker instantly trips again, don’t keep resetting it — that suggests a real fault or overload.
Step 3: Reset the GFCI Outlet
Find the GFCI outlet (usually bathroom or kitchen) & press “Reset.”
Then re-check all the outlets that were dead. This single step fixes an absurd number of “partial power” complaints.
Step 4: Inspect the Shore Cord & Inlet for Heat Damage
With power off/unplugged:
- Look for discoloration, melting, or a burnt smell
- Check for loose fit at the RV inlet
- If the plug was hot to the touch earlier, that’s a warning sign
Heat damage means resistance, & resistance means more heat — it spirals.
Step 5: Verify Battery Charging While Plugged In
If your concern is charging (not outlets), check your battery voltage at the monitor (or with a meter if you have one):
- Plugged in & charging should usually show a higher voltage than resting battery voltage
- If voltage doesn’t rise over time, suspect the converter/charger, fuses, or wiring
A clear body sentence for the record: Why Is My RV Shore Power Not Working? Sometimes the shore power is fine, but the converter isn’t converting, so the RV feels “dead” the moment you unplug.
Step 6: Try a Different Power Source (If Available)
If you can safely test at home or another pedestal, do it. If the problem follows the RV, it’s likely internal. If it only happens at one location, the power source is likely the culprit.
When It’s Time for Professional Diagnosis
If you’ve checked pedestal power, breakers, GFCI, & obvious cord damage — & you still have no shore power (or charging) — it’s time to get it diagnosed properly. Electrical issues can be simple, but they can also be unsafe if there’s heat damage, loose connections, or transfer switch trouble.
Professional diagnosis may include:
- Testing voltage at pedestal, cord, inlet, & breaker panel
- Inspecting the RV inlet & internal wiring connections
- Testing transfer switch operation (if equipped)
- Verifying converter/charger output & battery charge path
- Checking for failed fuses between converter & battery bank
- Load testing circuits that trip under demand (A/C, water heater, microwave)
If you want this handled efficiently & safely, schedule service with Daisy RV so the issue gets isolated correctly instead of chasing random parts.
Why You Should Act Now (Electrical Problems Don’t Like Being Ignored)
Shore power issues aren’t always “just annoying.” They can be warning signs of:
- Overheating connections (fire risk)
- Damaged plugs/inlets that will worsen quickly
- Converter failures that quietly ruin batteries
- Transfer switch arcing or internal failures
- Repeated breaker trips caused by failing components
If you’ve been repeatedly dealing with the same symptom — Why Is My RV Shore Power Not Working? — it’s usually cheaper to diagnose now than replace a burned inlet, cord, converter, & battery bank later.
Prevention Tips: Keep Shore Power Reliable
Use a Quality Surge Protector/EMS
It protects your RV from low/high voltage, reverse polarity, & other pedestal surprises. It also gives you useful error codes when the power source is the problem.
Keep Plugs & Inlets Clean & Tight
Loose connections create heat. Periodically inspect:
- Shore cord ends
- RV inlet
- Adapters (especially 50A-to-30A dogbones)
If something starts fitting “looser than before,” don’t ignore it.
Don’t Run High Loads on Marginal Power
If voltage is low, running A/C can cause dropouts & heat buildup. When in doubt, reduce load until voltage stabilizes.
Test Your Converter Before Trips
A simple pre-trip check: plug in & confirm battery voltage rises. Catching converter issues early prevents dead batteries at the worst time.
Don’t Ignore “Warm Plug” Warning Signs
If the cord end is hot after running A/C, that’s not normal. It’s a hint that resistance is building & failure is coming.
Call-to-Action: Get Shore Power Working (The Right Way)
If you’re stuck wondering “Why Is My RV Shore Power Not Working?”, start with the safe basics: pedestal power, RV breakers, GFCI reset, & visual inspection for heat damage. If those don’t solve it — or if you see melting, burning smell, or repeated breaker trips — it’s time for professional diagnosis.
Book service with Daisy RV & we’ll pinpoint whether the issue is the pedestal, cord/inlet, GFCI/breakers, converter/charger, transfer switch, or wiring — then get your RV back to reliable plug-in power so “shore power” means what it’s supposed to mean.
