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Unbalanced loads can cause phase currents, thus creating negative voltage sequences and circulating currents. This can result in higher equipment maintenance costs and failures. Additionally, imbalanced loads may generate higher demand charges from the utility if the utility is billing demand on the highest phase.
Minor fluctuations are generally left uncorrected. Significant unbalanced loads can be rewired to equalize the load between phases.
balances the load over three phases and mitigates phase currents, thus reducing negative voltage sequences and circulating currents. This minimizes equipment maintenance costs and failures. Current balancing can often reduce demand charges from the utility.