एकैचोटि कति लोड चल्छ? Plan appliances that run together

घरको बिजुली लोड कति हुन्छ? What is your home's simultaneous electrical load?

एकै समयमा चल्न सक्ने उपकरण राख्नुहोस्। Running load, मोटर सुरु हुँदाको peak, current, connection reference र inverter लक्ष्य हेर्नुहोस्। List appliances that may run at the same time. See running load, motor-start peak, current, a connection reference, and an inverter target.

एकैचोटि चल्ने उपकरणAppliances running together

यी नमुना watt हुन्। आफ्नो उपकरणको label, manual वा manufacturer data ले बदल्नुहोस्। These watts are examples. Replace them with the appliance label, manual, or manufacturer data.

उपकरणAppliance	संख्याQty	चल्दाRunningW each	सुरु हुँदाStartingW each
उपकरणAppliance	संख्याQuantity	चल्दा प्रति उपकरण WRunning watts each	सुरु हुँदा प्रति उपकरण WStarting watts each
उपकरणAppliance	संख्याQuantity	चल्दा प्रति उपकरण WRunning watts each	सुरु हुँदा प्रति उपकरण WStarting watts each
उपकरणAppliance	संख्याQuantity	चल्दा प्रति उपकरण WRunning watts each	सुरु हुँदा प्रति उपकरण WStarting watts each
उपकरणAppliance	संख्याQuantity	चल्दा प्रति उपकरण WRunning watts each	सुरु हुँदा प्रति उपकरण WStarting watts each
उपकरणAppliance	संख्याQuantity	चल्दा प्रति उपकरण WRunning watts each	सुरु हुँदा प्रति उपकरण WStarting watts each
उपकरणAppliance	संख्याQuantity	चल्दा प्रति उपकरण WRunning watts each	सुरु हुँदा प्रति उपकरण WStarting watts each

Motor, pump, fridge र compressor सुरु हुँदा बढी power लिन सक्छन्। थाहा नभए starting W खाली छोड्नुहोस्, calculator ले running W नै मान्छ। Motors, pumps, fridges, and compressors can need more power at startup. Leave starting W blank if unknown, and the calculator will use running W.

Supply र planning मान्यताSupply and planning assumptions

Supply voltageSupply voltage

230 V NEA single-phase tariff category को reference हो। मापन फरक भए बदल्नुहोस्।230 V is the NEA single-phase tariff reference. Replace it if your measured supply differs.

Planning power factorPlanning power factor 0.90 नमुना हो। उपकरण वा electrician को data भए त्यही राख्नुहोस्।0.90 is an example. Use equipment or electrician data when available.

Planning allowancePlanning allowance

25% सम्पादन गर्न मिल्ने नमुना हो, code rule होइन।25% is an editable example, not a code rule.

तपाईंको लोड अनुमानYour load estimate

Allowance सहित steady currentSteady current with allowance 10.5 A यो breaker size होइनThis is not a breaker size

चलिरहेको कुल लोडRunning load1,735 W

एक उपकरण सुरु हुँदाको peakOne-device startup peak3,235 W

निरन्तर inverter लक्ष्यContinuous inverter target2,169 W

लगभग inverter VAApproximate inverter VA2,410 VA

Allowance अघिको currentCurrent before allowance8.4 A

Startup current, लगभगApproximate startup current15.6 A

NEA single-phase referenceNEA single-phase reference 15 A fuse category

यो steady planning current भन्दा कम नभएको सानो published category हो। यसले sanctioned capacity वा upgrade स्वीकृति प्रमाणित गर्दैन।This is the smallest published category not below the steady planning current. It does not prove sanctioned capacity or upgrade approval.

Electrician ले के जाँच्ने?What must an electrician check?

Cable ampacity, wiring method, temperature, grouping, voltage drop, fault current, breaker breaking capacity र trip curve, RCD/RCBO, earthing तथा local approval।Cable ampacity, wiring method, temperature, grouping, voltage drop, fault current, breaker breaking capacity and trip curve, RCD or RCBO protection, earthing, and local approval.

हिसाब कसरी हुन्छ?How the calculation works

यो energy bill होइन। यहाँ watt ले एउटै क्षणमा चाहिने power देखाउँछ। Current अनुमानमा voltage र power factor प्रयोग हुन्छ।This is not an energy-bill calculation. Watts describe power needed at one moment. The current estimate uses voltage and power factor.

running load W = sum(quantity × running W)
startup peak W = running load + largest single (starting W − running W)
planned W = running load × (1 + allowance %)
planned current A = planned W ÷ (voltage × power factor)
planned VA = planned W ÷ power factor
connection reference = first NEA category at or above planned current

Startup estimate ले एउटा उपकरण मात्र एक पटकमा सुरु हुन्छ मान्छ। Starting power र power factor वास्तविक startup मा फरक हुन सक्छ।The startup estimate assumes only one appliance starts at a time. Starting power and power factor can differ during a real start.

नमुना हिसाबWorked example

चार 10 W बत्ती, 15 W router, 80 W TV, 150 W fridge, 700 W rice cooker र 750 W pump एकैचोटि चल्ने मानौं। Pump को starting power 2,250 W छ।Assume four 10 W lights, a 15 W router, 80 W TV, 150 W fridge, 700 W rice cooker, and 750 W pump run together. The pump's starting power is 2,250 W.

4 × 10 + 15 + 80 + 150 + 700 + 750 = 1,735 Wएकैचोटि चलिरहेको लोडsimultaneous running load

1,735 + (2,250 − 750) = 3,235 Wpump सुरु हुँदाको peakpeak when the pump starts

1,735 × 1.25 = 2,169 W25% planning allowance सहितwith 25% planning allowance

2,169 ÷ (230 × 0.90) = 10.5 Asteady planning currentsteady planning current

2,169 ÷ 0.90 = 2,410 VAcontinuous inverter referencecontinuous inverter reference

10.5 A → 15 A published categoryNEA tariff category reference मात्रNEA tariff category reference only

स्रोत र मान्यताSources and assumptions

Nepal Electricity Authority, Annual Report 2024/2025, checked 6 Sep 2026. Tariff Annex 1 lists domestic single-phase low voltage as 230 V with 5 A, 15 A, 30 A, and 60 A categories.
University of Maryland Extension, Working on Solar Design and System Sizing, checked 6 Sep 2026. It supports itemizing appliance ratings, checking loads that may run simultaneously, and accounting for brief motor startup surge.
NIST Special Publication 1193, Guide for the Use of the International System of Units, checked 6 Sep 2026. Its electrical table expresses AC real power as volts × amperes × power factor.
IEC 60898-1, circuit-breakers for household and similar installations, checked 6 Sep 2026. Breakers have defined voltage, current, and short-circuit performance, so this planner does not select one from load current alone.
Nepal Department of Urban Development and Building Construction, building codes, checked 6 Sep 2026. NBC 207 is an official electrical design reference for public buildings, not a household breaker-sizing shortcut.

230 V बाहेक 0.90 power factor, 25% allowance र सबै appliance watt नमुना मात्र हुन्। Connection category mapping steady current बाट गरिएको reference हो, NEA application decision होइन।Apart from the cited 230 V category, the 0.90 power factor, 25% allowance, and all appliance watts are examples. The connection mapping is a steady-current reference, not an NEA application decision.

किन्नुअघि वा wiring बदल्नुअघिBefore buying or changing wiring

यो calculator ले cable, MCB, fuse, RCD/RCBO, earthing, distribution board, fault protection वा sanctioned supply design गर्दैन। Inverter छान्दा continuous W, VA, surge rating र surge duration सबै datasheet मा मिलाउनुहोस्। अन्तिम design र installation योग्य electrician तथा सम्बन्धित authority बाट जाँच गराउनुहोस्।This calculator does not design cables, MCBs, fuses, RCD or RCBO protection, earthing, distribution boards, fault protection, or sanctioned supply. For an inverter, match continuous W, VA, surge rating, and surge duration on the datasheet. Have a qualified electrician and the relevant authority check the final design and installation.