belti

i have a compressor 150ltr 2h.p 7.5a .and i hava a genarator cassoline 5.5h.p 230v 3A on normal plugs 3 PLUGS SINGLE PHASE + 1 PLUG 3 PHASE but the compressor isn`t working when i plug it on a normal plug of the genrator. the compressor is 230v and i`m scared to plug it on the big plug of the generator because it has 400v 16a what can i do pls?