11:33 AM PT -- Stress Factory owner Vinnie Brand tells us the club's main circuit breaker went down during Eddie's 7:00 PM show, which cut the lights and audio -- but they reset it and Eddie finished the gig.
But, when Eddie came on for his second show the breaker tripped again. Brand says Griffin went on his rant while they were trying to reset it again, and bolted from the club without finishing his set.
Brand adds, Eddie's "unfortunate statements about them [being racist] are not true. This was just an act of God ... a freak accident that happened."
Eddie Griffin's got beef with a famous NJ comedy club, because for him ... rule number one when booking black comedians in your club is make sure you can LIGHT said black comedians!!!
Eddie was onstage Friday night at the Stress Factory in New Brunswick when he said enough is enough ... and ripped into management for what he considered inferior lighting and sound.
This clip is from his 9:45 PM headlining show, but witnesses tell us he'd stormed out earlier ... immediately after his 7:00 PM gig. We're told he was angry about some technical malfunctions during the set -- so when he came back for the second show he couldn't hold back.
The good news for the crowd is he turned it into big laughs ... even if they couldn't see him.
Now, we don't know the club's side of the story yet ... we've reached out to management. Eddie definitely put 'em on notice during his act -- which included him pretending to call in the Nation of Islam to help the club find skin-appropriate lighting.