1Φ / 3Φ Power
Quick estimated amperage from kW and system voltage.
Quick Voltage Drop
Approximate conductor resistance at 75°C, one-way feet. Not an ampacity or conductor-sizing approval.
For final design, account for ampacity, derating, conductor temperature, reactance, motor loads and terminations. The 3%/5% thresholds are recommendations, not universal requirements.
Offset / Rolling Offset
Exact trig. Two opposite bends; for rolling offsets, rise and side roll combine to a true diagonal.
Verify conduit OD, shoe marks, take-up and springback at your actual bender.
EGC Size Lookup
NEC 2023 Table 250.122 equipment grounding conductor only—sized from OCPD, not service conductor. Not a GEC lookup.
Increased ungrounded conductor size may require proportional EGC upsizing per 250.122(B). Verify parallel raceway requirements and the adopted code.
Offline kit limitations: Results stay only in memory on this page, are not synchronized, and do not create any project or panel records. For verified arc-flash labels, go online to the reviewed equipment-label workflow.