30-Day NEC 220.87 Load Studies & Utility Transformer Avoidance
When you ask a standard electrical contractor to add 10 commercial EV chargers, a heat-pump chiller, or a manufacturing line, they often look at the nameplate ratings on your main switchboard and tell you that you need a $120,000+ utility service and transformer upgrade with an 18-month lead time.
In most buildings, actual peak demand is less than 40% of nameplate breaker capacity. NYREER’s 30-Day NEC 220.87 Load Studies prove your true spare capacity using calibrated revenue-grade data loggers—and combine dynamic load management with battery buffering so you can build now on your existing service.
Our 4-Step Transformer Avoidance Methodology
- Non-Invasive Revenue-Grade CT Deployment: NYREER engineers install calibrated 3-phase current transformers (CTs) and voltage leads on your main switchgear and sub-panels with zero facility downtime.
- Continuous 30-Day Interval Recording (NEC 220.87): We record 15-minute average demand, peak motor-starting transients, power factor, phase imbalance, and harmonic distortion across a full 30-day cycle.
- PE-Certified Load Calculation Report: Our engineers compile an Authority Having Jurisdiction (AHJ) and utility-ready engineering report demonstrating exact available amperage by time of day.
- Dynamic Load Sharing & BESS Buffering: Where peak afternoon capacity is tight, we specify automated EV load management (throttling chargers only during the 2 hours your building HVAC peaks) or a peak-shaving Battery Energy Storage System.
Ready to Engineer Resilient Power or High-Throughput EV Charging?
Speak directly with NYREER’s senior electrical engineers and master technicians serving NY, NJ, VT, and MA.