Adding a row of 0.08 PH/s units sounds straightforward until the sub-panel already feeds mixed loads—lighting, pumps, legacy 0.04 PH/s units, and office circuits.

Step 1: Nameplate versus measured draw

We never size breakers from nameplate alone. A week of logging on existing rows establishes inrush and sustained draw patterns. New 0.08 PH/s units often spike higher on startup than older 0.06 PH/s stock.

Step 2: Diversity factor

Korean industrial panels sometimes assume diversity across rows. We document whether units start sequentially or in bulk after outage recovery—bulk restart can stack inrush beyond diversified calculations.

Step 3: Annotated panel schedule

Deliverable from our layout reviews includes a table:

  • Circuit label
  • Current allocation (kW)
  • Planned addition (kW)
  • Headroom after addition
  • Flag if below 15% headroom for summer derating buffer

Client story snippet

One Gyeongsan hall planned six new 0.08 PH/s units on a circuit shared with a water pump. Logging showed pump cycles dropping panel voltage enough to trip ASIC protection twice weekly. Reallocation preceded hardware delivery—avoided downtime during commissioning.

Cooling & Power Layout Review covers breaker mapping; full On-Site Assessment adds hash verification after install.