The easiest way to identify the wattage on any one circuit is to see which light bulbs turn on and off when you flip the switch on and off. From there, you can look directly at the light bulbs to find out the wattage.
Here are some common places the wattage will be printed on your light bulb.
On the Side of the Bulb
On the Base of the Bulb
(You'll have to unscrew the bulb to find it here)
On Top of the Bulb
If the switch controls more than one bulb, add the wattages together to get the total wattage on the switch.
To see which light bulbs and wattage limits Brilliant is compatible with, check out our article here.
If you discover your wattage or bulb selection is incompatible with Brilliant, check out this article to help you choose the best bulbs for Brilliant.