Quick Jimbotron question

[TTNuge]

Those of you using a "Jimbotron" type setup or some other inverter setup at comps and elsewhere do you run one of those large in line fuses? And I should know this but I'm drawing a blank right now, if you do fuse one of the wires do you fuse the positive or the negative line?

Thanks,
Trent

 

[Audi_dubs]

Positive. Or red for dc power.