It took some time for service to get back to normal, even once the trains started rolling again.
The fire hit around 5:45 p.m. in the Boerum Hill neighborhood. MTA officials say all trains were able to move - but slowly - and all had lights and air conditioning. No passengers were injured, and none were trapped at any point.
Consolidated Edison spokeswoman Elizabeth Clark says it's not clear whether Sunday's sweltering heat was a factor in the fire.
