Check the Usable Power Capacity of a Campsite Electric Site

What does the National Fire Agency say about campground electricity?

The third rule in "Safety rules for a fun camping trip," which the National Fire Agency posted to the Policy Briefing on October 18, 2024, is "check the power capacity and use electricity safely without exceeding it." The same article also shows the agency's campground fire statistics for the last three years. Of 173 fires in total, electrical causes were the most common, at 43.

That article has no specific capacity standard, no wattage figures for devices, and no way to judge an overload. So take only the direction of the rule, and fill in the numbers from other sources. For the fire count, read only that electricity was the leading cause; this source does not tell you which devices were responsible.

How do you add up the power use of the devices you bring?

In its September 4, 2025 press release "Power strip misuse risks fires, and children are often hurt, so guardians should take care," the Ministry of Trade and Industry advises checking power consumption in advance and not exceeding a power strip's rated capacity. It explains that rated capacity is calculated by multiplying voltage (V) by current (A) (W = V × A).

You can use this formula with the voltage and current marked on the back of a device or in its manual. The calculation below is a made-up example to show the method, not figures for real products.

After you get the total, compare it with the per-site allowed capacity the campsite gives, and with the rating printed on the power strip or cord reel you will use. You must not exceed the lower of the two, so check both numbers. Devices that produce heat, such as for heating or cooking, tend to draw a lot of power and can easily take a large share of the total.

Where can you find a campsite's allowed capacity?

The official sources have no nationwide standard, so you have to find the value the campsite sets. This order works.

1. Read the site description on the booking page for whether electricity is available and the capacity listed.
2. If nothing is listed, ask the office by phone or by message before booking.
3. On site, check the markings on the site's power box or distribution panel.
4. If your total is close to the allowed capacity, bring fewer devices or take turns using them.

Note the office's answer along with the date, so it is easy to check again on site. If the capacity is listed nowhere, it is safer to change your plan and not bring large heating devices.

What should you follow when using power strips and cord reels?

The Ministry of Trade and Industry material boils down to five points.

• Do not exceed a power strip's rated capacity.
• Do not plug a power strip into another power strip.
• Plug high-consumption products, such as air conditioners and heaters, into a dedicated or standalone wall outlet.
• Keep cords from bending sharply or being pressed by heavy objects.
• Check a product's power consumption before use.

One caution: of the 387 accidents reported to the Consumer Agency from 2020 to 2024 that this press release cites, 84.6% (203 cases) happened in homes. You cannot assume campground electrical equipment is under the same conditions, so on-site guidance comes first at a campsite. The material makes no mention of camping or cord reels.

Where do you check the power use of the electrical product you will add up?

As practice for adding up, take an electric mat, which is commonly used at campsite electric sites. On 2026-10-10 I checked two Cozy Microfiber Electric Mat models listed as electric mats in the official shop of the Korean brand Kovea.

The text area of the two product pages showed no rated voltage, power consumption, size, KC mark, or precautions for use. This article does not estimate the power consumption of either product. Read the voltage and current or the power consumption off the label of the product you receive and put it in the calculation table above, and if it is not marked, you cannot add it up, so ask the seller. For price and stock, go by the link as of the check date.

This table is for people who plan to use an electric mat to follow the adding-up method. If you booked a campsite where electricity is not available, it does not apply, so check the campsite's guidance first.

What should you check last before using electricity?

Work out the total before you leave, and on arrival check the site's power equipment and the allowed capacity marking. If the total exceeds the allowed capacity, decide which devices you will not turn on. Arrange cords so they do not bend or get pressed, and if you sense anything wrong, stop using it and tell the office.

If you have not bought a device yet, first see whether the product has its power consumption marked. A product with no marking, or one you cannot read, cannot be added up. If the maker's manual and the campsite's guidance differ from what this article says, follow them.