Hello everyone I appreciate you taking the time to read this. Im pulling 4 THHN #10s L1 L2 N and egc for a 30 amp circuit as well as 2 THHN #12s for a 20 amp circuit through a 1/2" EMT with a 3/4" TB. The conductors will come in one side of the T the #12s will run across the T and the #10s will go out the top from the top a #12 will come down and join the 2 #12s going across my question is will a 3/4 TB be of the sufficient size to accommodate all conductors?