Circuit breakers are illegal in MECA, @

Dtrom1055 ; how is your setup built? also need to know what size sub you are using.

your class is determined by how much cone area you have and how much fusing you wish to install against that cone are as well as how the setup is installed.

use this formula to determine your fusing "score" for lack of a better term. Total Amperage of In-line Fusing X 10) + Woofer Cone Surface Area

here are some examples that will help you determine.

30 amps + 2-12 = 526 40 amps + 1-12 = 513 30 amps + 1-15 = 477 50 amps + 1-18 = 754

50 amps + 1-12^2 = 644 50 amps + 2-12 = 726 100 amps + 1-15 = 1177 100 amps + 2-18 = 1509

50 amps + 2-10^2 = 700 100 amps + 2-12 = 1226 200 amps + 2-15 = 2353 200 amps + 2-18 = 2509

50 amps + 3-10 = 736 200 amps + 2-12 = 2226 400 amps + 4-15 = 4707 400 amps + 4-18 = 5018

there are also limits to how much power you can run in each class as well but i cant find it at the moment but as an example S1 is no more than 1500wrms @ amp lowest PUBLISHED ohm load, S2 is 3000wrms @ amps lowest PUBLISHED ohm load. the couple shows i went to this summer i dont think they even checked to see what power i had on tap, they just looked at my fusing to verify i was competing in the proper class BUT if you go to state or world finals they will disassemble your entire setup and look up the published specs for your equipment if they have to in order to verify you are competing legally.

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