Guides

Pakistani solar PV DC cable sizing 2026: 4mm vs 6mm vs 10mm vs 25mm selection by string length, current, voltage drop, ambient. IEC 62930 + TUV certified.

Pakistani motor starter ROI 2026: DOL vs star-delta vs soft-starter vs VFD comparison by motor size. Inrush current, payback math, IEC 60947-4-1 compliance.

Pakistani DISCO tariff comparison 2026: K-Electric, LESCO, IESCO, MEPCO, GEPCO industrial + commercial rates side-by-side. ToU bands, MD charges, fuel adjustment differences.

Pakistani energy meter selection 2026: CT-operated (5A 100/5 ratio) vs direct-connect (up to 100A) energy meters, when to use each, BoM, IEC 62052-11 + 62053-21 compliance.

Industrial 1500V solar Pakistan 2026: when to use 1500V vs 1000V class, DC breaker / fuse / SPD sizing for 100-500kW systems, IEC 60947-2 + IEC 61643-31 compliance.

LiFePO4 battery sizing Pakistani homes 2026: 5/10/15 kWh storage math, 48V vs 51.2V bank, BMS, DC breaker, DC SPD, BoM and total install cost.

Pakistani electrical earthing 2026: TT vs TN-C-S vs TN-S systems explained, copper rod sizing, earth pit construction, neutral-earth bond rules, IEC 60364-4-41 + DISCO compliance.

EV charger sizing Pakistani homes 2026: 7kW vs 22kW, single-phase vs 3-phase, charge time math, sanctioned load impact, IEC 61851 standards, DB BoM.

Commercial Maximum Demand penalty Pakistan 2026: NEPRA 15-min MD billing explained, calculation, ToU + power-factor + load-staggering tactics to cut industrial bills by 15-40%.

3-phase WiFi smart breaker installer guide Pakistan 2026: YCB1WIFI 4P 100A wiring, Tuya/Smart Life pairing, MD monitoring, remote trip, kWh logging — IEC 60947-2 compliant.