Erupting objects with luminosities between those of novae and supernovae -- Intermediate Luminosity Optical Transients (ILOTs) -- are being discovered at an accelerated rate. The nature of these eruptions is poorly understood. We suggest that ILOTs and major eruptions of Luminous Blue Variables (LBVs), have a similar powering mechanism. We propose that the mechanism behind these eruptions is mass accretion onto a main-sequence star. We introduce an analyzing tool for transients: the Energy-Time Diagram (ETD), where we plot the total energy of the eruption against its eruption timescale. ILOTs and major LBV eruptions occupy a constant luminosity stripe in the ETD -- the Optical Transient Stripe (OTS). This allows us to relate major LBV outbursts with ILOTs, and to show that they have approximately the same average Supper-Eddington luminosity. We demonstrate our claims on recent optical transients and other erupting objects.