i am inquiring about balancing the loads for two Ecoflow Delta Pro Solar generators with a Victron 100a Autotransformer. I would like to validate the wiring. The two generators come into a proprietary hub where I will take a modified 30amp L14-30 cord and INPUT the L1, L2 and the ground into the autontransformer and cap the neutral. Then OUTPUT L1, L2, N and G to a 100amp breaker in my main panel with a interlock kit.
If this is an autotransformer, then you can't ground the neutral coming out of the autotransformer since presumably the generator WILL ground the neutral that isn't being used.
Even though you are not using the neutral from the generator there is still a connection to it through the autotransformer.
For full isolation and creating a fresh neutral you need an ISOLATION transformer (separate primary and secondary windings).
so I should not ground the neutral inside the Autotransformer? Just connect the L1, L2, N and G out to the main panel? I was using a schematic off the Victron website where the N is piggy tailed inside the transformer from the out connector to the ground bar.
https://www.victronenergy.com/upload/documents/AT-5-split-phase-240V-to-120-240V-with-Generator-240V.pdf
Check your generator to see if the neutral is connected to the chassis/safety ground output. If not, go ahead and make your ground/neutral connection at the transformer output.
