Power strips are a modern travel essential. Between smartphones, smartwatches, cameras, laptops, CPAP machines, and portable batteries, travelers often need more outlets than a single wall socket provides. This has led to one of the most frequently asked travel safety questions online:
The short answer is: sometimes—but not all power strips, and not in all places.
The long answer is more nuanced and depends on where you plan to use them, how the power strip is designed, and whether it complies with fire-safety regulations. This guide breaks down the rules clearly, with a special focus on cruise ships, where restrictions are strict and frequently misunderstood.
Power strips are regulated primarily due to fire safety risks. According to safety agencies and maritime authorities, improper power distribution devices can:
Overload electrical circuits
Overheat wiring and internal components
Increase the risk of electrical fires
Bypass built-in safety mechanisms of fixed outlets
The U.S. Consumer Product Safety Commission (CPSC) and UK Office for Product Safety and Standards (gov.uk) have both issued guidance on safe use of extension cords and power strips, emphasizing that misuse is a leading cause of residential and commercial fires.
On cruise ships, the risk is amplified due to:
Confined spaces
Older or specialized electrical systems
Limited fire escape routes
International maritime safety laws
Most major cruise lines prohibit traditional power strips, especially those with surge protection.
Cruise ships operate under international maritime safety regulations, including:
SOLAS (Safety of Life at Sea Convention)
International Maritime Organization (IMO) fire-prevention standards
Surge-protected power strips can interfere with a ship’s electrical load balancing and safety systems, increasing fire risk.
According to Royal Caribbean, Carnival Cruise Line, Norwegian Cruise Line, MSC Cruises, and Disney Cruise Line, surge-protected devices are among the most commonly confiscated items during embarkation.
Cruise Line Power Strip Policies (Comparison Table)
| Cruise Line | Surge-Protected Power Strips | Non-Surge USB Hubs | Extension Cords |
|---|---|---|---|
| Royal Caribbean | Not allowed | Allowed (USB only) | Not allowed |
| Carnival | Not allowed | Allowed | Not allowed |
| Norwegian | Not allowed | Allowed | Not allowed |
| MSC Cruises | Not allowed | Allowed | Not allowed |
| Disney Cruise Line | Not allowed | Allowed | Not allowed |
Source: Official cruise line prohibited-items lists (publicly available safety documentation)
Cruise lines generally allow low-risk charging alternatives, including:
USB charging hubs (no surge protection)
Multi-USB wall chargers
Cruise-approved outlet expanders
Medical-grade devices (with prior approval)
A device is usually allowed if it:
Has no surge protection
Has no extension cord
Plugs directly into the wall
Is clearly labeled as USB charging only
Is UL-listed or CE-certified
Surge protectors are designed to absorb voltage spikes on land-based electrical systems. Cruise ships, however, use different electrical architectures, often with:
Marine-grade wiring
Load-balancing systems
Backup generators
Surge protectors can disrupt these systems or fail under maritime power fluctuations.
According to Consumer Reports, surge protectors can degrade over time and may fail silently, creating hidden overheating risks.
Most hotels allow standard power strips, but safety guidance still applies.
Avoid daisy-chaining power strips
Use strips with built-in circuit breakers
Do not place under carpets or bedding
Unplug when not in use
Fire safety authorities in the UK and U.S. recommend limiting high-wattage devices such as hair dryers or kettles to wall outlets only.
| Scenario | Allowed? |
|---|---|
| Carry-on luggage | Yes |
| Checked baggage | Yes |
| In-seat use | Usually not allowed |
Airlines typically do not allow passengers to plug personal power strips into aircraft outlets, even if technically possible.
The FAA and EASA advise against using multi-outlet adapters onboard due to circuit limitations.
Many offices and government buildings restrict power strips based on fire codes.
According to OSHA and NFPA (National Fire Protection Association):
Power strips must be directly plugged into wall outlets
Extension cords cannot be used as permanent wiring
High-draw equipment must not be connected to strips
Cruise ship
Hotel
Aircraft
Office or conference venue
No surge protection (for cruises)
USB-only output
Certified safety markings (UL, CE)
Cruise line prohibited-items list
Airline in-flight power guidance
Hotel safety notices
Multi-port USB charger
International plug adapter (without surge protection)
Cruise forums and passenger reports consistently note that power strips with surge protection are confiscated at security screening. In most cases:
The item is tagged
Stored onboard
Returned at the end of the cruise
This aligns with cruise line safety protocols and is not discretionary enforcement.
Electrical fires are a documented risk. According to data summarized by the World Health Organization (WHO) and national fire safety agencies, electrical faults are a leading cause of fires in confined accommodation environments.
Based on publicly available information, there is no confirmed data showing that USB-only charging hubs increase fire risk when used properly.
Most cruise lines prohibit surge-protected power strips but allow USB-only charging hubs.
If it contains surge protection or an extension cord, yes—on most cruise lines.
Medical equipment may be allowed with prior approval from the cruise line.
No. Extension cords are typically banned for the same safety reasons.
Yes, generally—but avoid overloading them and follow fire safety guidance.
You can carry one, but airlines usually prohibit in-seat use.
A non-surge USB charging hub or multi-USB wall charger.
Adapters without surge protection are usually allowed.
They can interfere with marine electrical systems and overheat.
Cruise line websites, FAA guidance, gov.uk fire safety pages, and Consumer Reports.
Power strips are not universally allowed
Cruise ships have the strictest rules
Surge protection is the most common reason for bans
USB-only charging hubs are the safest alternative
Always verify official policies before traveling
Consumer Product Safety Commission (cpsc.gov)
UK Office for Product Safety and Standards (gov.uk)
World Health Organization (who.int)
Consumer Reports (consumerreports.org)
International Maritime Organization (imo.org)
Understanding whether power strips are allowed isn’t about inconvenience—it’s about fire prevention, electrical safety, and compliance with international standards. Choosing the right charging solution ensures smoother travel, avoids confiscation, and keeps everyone safer.
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