Historically, typical loads of commercial power systems have been predominately linear; however, in the last few decades, a significant portion of these loads has changed to the nonlinear variety. One ...
Improper voltage is the one of the greatest causes of failed compressors in three-phase units. We are allowed a 10% deviation over or under the unit nameplate-rated voltage. Most technicians know to ...
Chinese battery supplier Weiheng Ecactus has introduced a new three-phase high-voltage hybrid all-in-one battery energy storage system (BESS). Dubbed the Agave TH, the BESS consists of an inverter ...
Stumped by the Code? Requirements for Identifying the High-Leg of a 3-Phase, 4-Wire Connected System
All questions and answers are based on the 2011 NEC. Q. What kind of marking does the Code require to identify the high-leg of a 3-phase, 4-wire delta connected system? A. On a 4-wire, delta-connected ...
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