Pillar 1: Continuous Current & Dynamic Derating (Ca*Cg*Ch) PASS
Design Current Ib / Harmonic Irms:2,734.8 A / 2,765.4 A
Derating Factors (Ca * Cg * Ch):1.00 * 1.00 * 1.00 = 1.000
Tabulated It / Effective Iz:3,200 A -> 3,200 A
Coordination Rule (Ib <= In <= Iz):2735A <= 3200A <= 3200A
BS 7671 Reg 433.1.1 & EMSD CoP Code 13: Iz = N * It * Ca * Cg * Ci * Cd * Ch >= In >= Ib
Pillar 2: Operating Temp (t1/ft) & Cumulative V-Drop PASS
Conductor Operating Temp t1:76.5 C (Max 90.0 C)
Temp Resistance Ratio ft:1.000 (Statutory Mode)
Branch V-Drop (V / %):3.35 V (0.84%)
Total Cumulative V-Drop (Up + Branch):1.22% (Limit: 4.00%)
t1 = Ta + (Tmax - Ta)*(Ib/Iz)^2 | Vd = L * Ib * (mV/A/m) * ft / (N * 1000)
Pillar 3: EMSD TG-BEC 2024 Whole Sub-main Copper Loss PASS
Effective AC Resistance r (mOhm/m):0.0193 mOhm/m
3-Phase + Neutral Loss (3*Irms^2 + IN^2)*R:13.48 kW (Ph: 12.4kW + N: 1.1kW)
Whole Sub-main Loss (Up + Branch) / P:17.60 kW / 1800 kW = 0.98%
EMSD TG-BEC Cl. 7.4.4 Limit (L=70m):1.50% (Non-Res L<=100m)
TG-BEC Cl. 7.4.4 & 7.8.4: Loss% = Sum(Pcu_upstream + Pcu_branch) / P_circuit <= [1.5% + 0.005%*(L-100)]
Pillar 4 & 5: Fault Level (If), Adiabatic (k2S2) & CPC/Tray PASS
Prospective Fault Current If(DB) vs Icu:31.2 kA <= 65.0 kA (PASS)
Adiabatic Min CSA (S_min = Isc*sqrt(t)/k):97.6 mm2 (k=143) -> PASS
CPC Size & Earth Fault Loop Zs:CPC: 150 mm2 | Zs: 0.018 Ohm
Physical OD & Containment Width:OD: -- (Std) | Min Tray: 300 mm
If = Vph / (Ztx + Zsb + Zc) | S_min = (If * sqrt(t)) / k | BS 7671 Table 54.7 CPC & CoP Code 14