PVI 50/60 TL Installation and Operation Manual (Rev C)
DOCR-070645-E
Page 45 of 102
Table 2.13 – Transformer configurations
When interfacing with a Wye-grounded transformer winding, a neutral is required.
Since the neutral is used by the inverter for voltage sensing only, the neutral does not
carry current. The size of the neutral may be reduced to a conductor no smaller than
the EGC or 8 AWG, which is the smallest acceptable wire for the terminal block. Note
that if AHJ approves, you can install a jumper across the EGC and the Neutral terminal,
this will satisfy the inverter sensing purposes.
When installing multiple inverters for parallel operation connected to a single
transformer winding, the kVA rating of the transformer must be at least 5% greater
than the total connected inverters’ kVA rating. Up to 50 inverters may be connected in
parallel for use with a single transformer.
