BC150H-M/Z3 REX 150KVA 480-120/208V 3PH ISO TRANSFORMER

At 150 KVA on a 208V, 3-phase secondary, the full-load secondary current is approximately 416A (calculated as KVA × 1000 ÷ (√3 × 208V)). It's recommended to size your downstream panelboard and feeder conductors accordingly, and to operate the transformer at no more than 80% of rated capacity for continuous loads under the Canadian Electrical Code.

Yes — as an isolation transformer, the BC150H-M/Z3 creates a separately derived system on the 120/208V secondary. Under the Canadian Electrical Code (CEC Section 10), this requires a system bonding jumper connecting the neutral to ground at the first means of disconnect on the secondary side, along with a grounding electrode conductor. Contact a licensed electrician or your local authority having jurisdiction (AHJ) for site-specific requirements.

Yes — isolation transformers like the BC150H-M/Z3 are commonly installed upstream of VFDs and sensitive electronic loads. The isolation barrier attenuates common-mode noise and provides a clean, separately derived source that helps protect equipment from line-side disturbances. For VFD applications, verify that the transformer's impedance (%Z3 designation) is compatible with your drive manufacturer's input requirements. Contact us if you need clarification on the impedance rating.