Van Shore Power Hookups

What Is Shore Power for a Campervan?

Shore power is when you plug your van into a pedestal (power hookup) at a campground or RV park. The pedestal provides 120V AC power (or 240V at some premium sites), just like a wall outlet at home. This power comes from the campground's electrical system, not your battery.

When plugged into shore power, your van runs directly off that external power source. Your inverter isn't needed. Your battery doesn't drain. You can run high-power appliances — a full kitchen, heating, entertainment — without worrying about battery capacity. You're essentially plugged into the grid.

Why Do You Need Shore Power in a Van Build?

Running High-Power Appliances

Some appliances are power hogs. A space heater, water heater, or full-size AC unit draws 3,000-5,000W continuously. Running that from a battery would drain it in minutes. Shore power lets you run these devices without draining batteries or oversizing your inverter.

Longer Stays Without Boondocking

If you're camping at established campgrounds for a week or month at a time, shore power is cheaper and easier than relying on solar and boondocking strategies. Pay the hookup fee and plug in.

Battery Charging and Preservation

Shore power charges your battery bank without using solar or an alternator. This is gentle on your battery and keeps it topped off. Over long stays, shore power means your battery is always at 100%, ready for boondocking once you leave.

Comfort and Flexibility

With shore power, you don't have to manage power use. Run lights all day, take hot showers, charge devices, run the furnace on cold nights — all without checking your battery. It's the closest you get to living at home.

Should You Install 30A or 50A Shore Power in a Van?

30A Service

Power available: 120V AC × 30A = 3,600W continuous

What you can run: Lights, furnace, water heater, TV, coffee maker, microwave (one at a time or in combination for 3,600W). Most household appliances work individually.

Connector: Twistlock inlet (looks like a large circular connector, typically black or white).

Cost: $300-500 parts + labor. Simpler to install than 50A.

Availability: Most campgrounds have 30A pedestals. It's the standard for standard sites.

Best for: Van builds, smaller RVs, boondockers who rarely use hookups. 30A is plenty for van living.

50A Service

Power available: 240V AC (two 120V legs) × 50A = 12,000W continuous

What you can run: Everything at once. Water heater, furnace, space heater, AC unit, microwave, and more running simultaneously. You have virtually unlimited power.

Connector: NEMA 14-50 inlet (large square connector with four pins).

Cost: $1,500-2,500 parts + labor. Requires 240V wiring and a bigger transfer switch. Significantly more expensive.

Availability: Premium campgrounds and some RV parks have 50A. Not everywhere. Standard sites have 30A.

Best for: Large RVs, motorhomes, or full-time living where running multiple AC units or large heaters is important.

Our Recommendation

Install 30A. It's the right balance for van living. You get ample power for everything you need, it's available at most campgrounds, it's affordable, and it keeps your van simple. 50A adds cost and complexity without much practical benefit unless you're running AC and heating simultaneously, which is rare in a van.

What Type of Shore Power Inlet Does a Van Need?

30A Twistlock Inlet

The standard for vans and small RVs. It's a round connector with a twist-lock design. The cord plugs in and you twist to lock it. It's secure and reliable. Cable from the pedestal to your van's inlet is usually a wet, heavy marine cable. You connect it at your inlet and it's safe.

If your campground pedestal is different (some older ones are), you may need an adapter. It's good to carry a couple of adapter cables just in case.

50A NEMA 14-50 Inlet

The standard for larger RVs and motorhomes. It's a four-pin rectangular connector. 50A inlets are less common at campgrounds, and adapters are harder to find if you need them.

Adapter Cables

Campground pedestals vary, especially older ones. It's smart to carry a couple of universal adapter cables so you can connect to different inlet types. A 30A twistlock to TT&R adapter, and maybe a 30A to 50A step-up cable for versatility.

How Does a Transfer Switch Work Between Battery and Shore Power?

A transfer switch is the electrical component that decides whether your van is powered by the battery or shore power. When you're plugged in, the transfer switch automatically (or manually) routes power from shore power to your main panel. When you unplug, it switches back to battery power.

How It Works

Shore power comes in through the inlet, passes through the transfer switch, and goes to your distribution panel. The switch detects whether shore power is present. If yes, it uses that. If no, it automatically falls back to battery power via your inverter.

This means your lights and appliances don't lose power when you disconnect from shore. The switch to battery power happens instantly with no flicker or disruption.

Manual vs. Automatic

Automatic transfer switches sense shore power and switch automatically. This is safer and more convenient. If shore power fails, you're instantly on battery. If you plug in, shore power kicks in. No thinking required.

Manual switches require you to flip a switch to select battery or shore power. They're cheaper but less convenient and slightly risky (you might forget to switch, or someone might accidentally switch while load is running).

We use automatic transfer switches on all builds with shore power. Safety and convenience are worth the cost.

How Do You Wire Shore Power Into a Van?

From Inlet to Transfer Switch

Shore power cable runs from your inlet (mounted on the exterior of the van, usually near the battery compartment) to the transfer switch. For 30A, we use 10 gauge marine-grade wire. For 50A, we use 6 gauge. This needs to be properly protected with conduit and fused at both ends.

From Transfer Switch to Distribution

The transfer switch outputs to your main distribution panel, just like your inverter does. Your lights, outlets, and all circuits draw power from the panel whether it's shore power, battery power, or inverter power. The transfer switch handles the switching invisibly.

Grounding

Shore power is grounded differently than battery power. The campground pedestal has a ground pin that needs to connect to your van's chassis ground or a ground block. This prevents electrical faults and shocks. Proper grounding is non-negotiable.

What Are the Best Practices for Plugging Into Shore Power?

Check the Pedestal

Before plugging in, visually inspect the pedestal inlet. Look for water, debris, corrosion, or damage. Wet or corroded inlets can cause electrical faults. If it looks bad, ask the campground if there's another pedestal or if it's safe to use.

Turn Off Major Loads Before Connecting

This prevents inrush current that can damage equipment. Before plugging in, turn off your heater, water heater, and other major loads. Once you're plugged in and stable, turn them back on. This is a best practice even though modern equipment usually handles it.

Secure the Cable

Your shore power cable is usually heavy and can move in the wind. Use cable clips or ties to secure it from the pedestal to your inlet so it doesn't whip around, get run over, or create a tripping hazard.

Monitor Your Battery

Shore power should be charging your battery automatically through your charger or converter. Monitor your battery voltage while plugged in. It should rise to 14-14.5V (charging) and then stay around 13.5V (fully charged). If it doesn't charge, there's an issue with your shore power hookup or charger.

How Much Does a Van Shore Power System Cost?

30A is standard for vans. 50A adds $1,200-1,800 in parts and labor. Optional accessories like surge protectors (which prevent campground electrical issues from damaging your van) and monitoring equipment are worth considering.

Can You Skip Shore Power in a Van Build?

If you're primarily boondocking and rarely use campgrounds, you might skip shore power entirely. Without it, you save money upfront and simplify your electrical system. Your battery, solar, and alternator charging are enough for off-grid living.

But if you camp at RV parks even a few weekends per year, shore power is worth adding. It's not expensive, it's universally available, and it eliminates power management stress when you're relaxing at camp.