Boost Transformer Feeding Panelboard

[distriser]

The system voltage will be 208Y/120, 3 phase, and the main panel will be 208/120V, 3 phase, 4 wire. Several loads (some single phase, others three phase) will require 230V, so I'm looking into wiring together three single-phase Buck-Boost transformers as an autotransformer and supplying them from the main panel, such that the autotransformer secondary is 229Y/132. Rather than connect a load directly to the autotransformer secondary, I want the secondary to feed a panelboard, but 229Y/132 exceeds the standard 208/120V panelboard rating. Any suggestions?

 

[jim dungar]

Some panelboards are rated for 240Y. You have to use the more expensive 240V 'only' 2P breakers. Check with your supplier,.