Guide
200 Gram vs 500 Gram Cakes: What the Numbers Mean
Walk into any fireworks store and you will see cakes labeled 200 gram and 500 gram. The numbers sound technical, but the idea is simple. They describe the size class of the cake, based on how much pyrotechnic composition it is allowed to contain under the rules for consumer fireworks. Here is where those numbers come from, what they mean for your show, and how to choose between them.
What a cake is
A cake is a group of cardboard tubes fused together, either glued into a dense block or mounted on a base. You light one fuse, and the tubes fire one after another. Each tube sends up its own effect. The standard calls these multiple tube devices.
Because the tubes are linked by fuse, a single cake can fill a stretch of your show with no reloading and no running back and forth. That is why cakes make up most of a modern backyard show.
Where the 200 and 500 gram limits come from
In the United States, consumer fireworks are classified for shipping as Division 1.4G. To get that classification, a device has to meet the American Pyrotechnics Association's standard, APA 87-1, which the US Department of Transportation uses in its hazardous materials rules. Professional display fireworks fall in a different class, 1.3G, and are handled by licensed operators.
APA 87-1 sets the limits on cakes. In the 2001 edition, section 3.5.2 says multiple tube devices are normally limited to a maximum of 200 grams of total pyrotechnic composition. Section 3.5.4 makes an exception. When the tubes are securely attached to a wood or plastic base and separated from each other by at least half an inch, a maximum total of 500 grams is permitted. DOT now references a newer edition, APA 87-1A, and consumer cakes are still sold in the 200 gram and 500 gram classes.
So a 200 gram cake is a cake built under the normal limit, and a 500 gram cake is one built to the stricter construction rules that allow more composition.
The weight is composition, not the box. A 500 gram cake might weigh several pounds on the shelf. The number on the label refers only to the pyrotechnic material inside.
What else limits a cake
The total is not the only rule. APA 87-1 also limits how much material can go into each tube, depending on the type of effect. For aerial tubes, it limits the lift charge in any one tube and caps the burst charge as a share of each component. It also requires the tubes to fire in sequence rather than all at once.
Separately, the US Consumer Product Safety Commission regulates consumer fireworks under federal law, including limits on the charge used for loud reports, fuse burn time, and stability so items do not tip over. CPSC rules and the APA standard work side by side. The gram class tells you the limit a cake was built under, not exactly what is inside.
What the difference means at your show
In general, a 500 gram cake can carry more composition than a 200 gram cake, so it has room for more tubes, larger tubes, or more effect per tube. A 200 gram cake is smaller by design. Neither one is better. They do different jobs.
Two cakes of the same class can still look very different. Shot count, tube size and effects vary from one item to the next. Read the label, look at the box, and ask us if you want help comparing two items.
Because cakes vary so much, do not judge one by its gram class alone. A well-made 200 gram cake can be the right pick for a small space, and a 500 gram cake can be too much for the same yard.
When to choose 200 gram
Pick 200 gram cakes for openers, for filling gaps between bigger items, and for smaller spaces where fireworks are legal. They usually cost less, so they help stretch a budget. Lighting a few in a row keeps the sky busy while you set up the next piece.
When to choose 500 gram
Pick 500 gram cakes for the middle and end of your show, and when you have plenty of open space. Most people build a finale around one or two of them. If you only buy one big item, make it your strongest 500 gram cake and light it last.
Safety is the same for both
Size class does not change the basics. Set every cake on a flat, hard surface, check that it is stable, light the fuse, and move away right away. Never lean over a cake. If one stops partway, do not go back to it. Wait, then soak it with water. Check your city and county rules before you buy, since most Texas cities ban fireworks inside city limits.
Shop both sizes in Caddo Mills
We carry both on our current list. Browse our 200 gram and 500 gram cake pages, reserve online, and pay at pickup at 5159 I-30, Exit 83. No shipping, local pickup only.
Questions
Questions
Is a 500 gram cake twice as big as a 200 gram cake?
Not necessarily. The numbers are maximum limits on pyrotechnic composition, not exact amounts. Shot count and effects vary by item, so read each label.
Why can some cakes have 500 grams?
Under APA 87-1, cakes are normally limited to 200 grams, but up to 500 grams is allowed when the tubes are securely attached to a base and spaced at least half an inch apart.
Are 500 gram cakes legal for consumers?
They are a consumer firework class sold in Texas during legal seasons. Whether you can use one depends on your city and county rules, so check before you buy.