Mapping Breaker Headroom Before Your Miner Row Arrives
How we trace panel schedules and log inrush for 0.06–0.10 TH/s units before operators commit to a full rack purchase.
Breaker trips on day three of operation are a predictable failure mode when panel headroom is estimated from nameplate math alone.
Nameplate vs Sustained Draw
Manufacturer spec sheets list maximum draw. Sustained operation in warm intake conditions often runs 8–12% higher. We bench units when samples exist and apply a correction factor when they do not.
Inrush During Sequential Boot
Staggered power-up reduces simultaneous inrush. For rows above eight units, we recommend sequenced PDU outlets with a documented boot order in the assessment report.
Phase Balance
Single-phase rooms in older Songpa buildings may have uneven loading across legs. Circuit mapping includes a phase balance note for the electrician, not just total amp availability.
Panel Upgrade Triggers
We recommend sub-panel installation when planned row draw exceeds 80% of sustained panel capacity after correction factors. Waiting until after hardware delivery costs more in emergency electrician fees.
Documentation to Gather
Bring your panel schedule, recent utility bills showing peak demand if available, and PDU specifications. These cut desk review time and reduce follow-up questions.