⚡ Cable Sizer (IS Standard)

Calculate sq.mm wire size and exact voltage drop for Indian standard voltages.

System Phase 1-Phase AC (230V) 3-Phase AC (415V)

Wire Material Copper (Cu) Aluminum (Al)

Load Current (Amps)

Length of Run (Meters)

Max Drop % 2% 3% 5% 7%

Calculate Cable Size

Sizing Analysis

Allowable Voltage Drop: -- V

Mathematically Required: -- sq.mm

IS Standard Recommended: -- sq.mm

Actual Drop at standard size: -- %

⚙️ Motor MCB/MCCB Sizer

Calculate Full Load Amps (FLA) and select the proper Indian market standard circuit breaker.

Motor Rating

Unit kW HP

System Voltage (Ph) 1-Phase 230V AC 3-Phase 415V AC

Power Factor (pf)

Efficiency (%)

Calculate Breaker Profile

Motor Dashboard

Running Current (FLA): -- A

Starting Current (approx DOL): -- A

Standard Breaker Size MCB/MCCB -- A

⚡ Ohm's Law & Power Wheel

Enter exactly TWO known values, and the calculator will automatically solve the other two.

Please enter exactly TWO values.

Voltage (V)

Current (I)

Resistance (R)

Power (P)

Solve Equations Clear Fields

Calculated Circuit Profile

Voltage

-- V

Current

-- A

Resistance

-- Ω

Power

-- W

🎨 Resistor Color Decoder

Supports fully featured 4-band, 5-band, and 6-band resistors (with temp coefficient).

4-Band

5-Band

6-Band

1st Band (Digit) Black (0) Brown (1) Red (2) Orange (3) Yellow (4) Green (5) Blue (6) Violet (7) Gray (8) White (9)

2nd Band (Digit) Black (0) Brown (1) Red (2) Orange (3) Yellow (4) Green (5) Blue (6) Violet (7) Gray (8) White (9)

3rd Band (Digit) Black (0) Brown (1) Red (2) Orange (3) Yellow (4) Green (5) Blue (6) Violet (7) Gray (8) White (9)

Multiplier Black (x1) Brown (x10) Red (x100) Orange (x1k) Yellow (x10k) Green (x100k) Blue (x1M) Violet (x10M) Gold (x0.1) Silver (x0.01)

Tolerance Brown (±1%) Red (±2%) Green (±0.5%) Blue (±0.25%) Violet (±0.1%) Gray (±0.05%) Gold (±5%) Silver (±10%)

Temperature Coefficient Brown (100 ppm/°C) Red (50 ppm/°C) Orange (15 ppm/°C) Yellow (25 ppm/°C) Blue (10 ppm/°C) Violet (5 ppm/°C)

Decoded Resistance

-- Ω

± -- %

🏭 Power Factor (kVAR) Sizer

Industrial tool to calculate the exact Capacitor Bank needed to correct power factor and save on penalties.

Real Power Load (kW)

System Voltage (V) 230V (1-Phase) 415V (3-Phase)

Current Power Factor

Target Power Factor

Target PF must be higher than Current PF!

Calculate Capacitor Bank

Capacitor Requirements

Required Correction: -- kVAr

Capacitor Line Current: -- A

✓ Installing this capacitor bank will prevent grid penalties and reduce line losses.

☀️ Solar / UPS Run-Time

Calculates exactly how long an inverter/battery bank will power a given load based on Depth of Discharge.

Appliance Load (Watts)

Battery System Voltage 12V (Car/Solo) 24V (Standard Inverter) 48V (Solar Array) 96V (Industrial)

Battery Capacity (Ah)

Battery Chemistry (DoD) Lead Acid / Tubular (50% DoD) Lithium Ion / LiFePO4 (80% DoD) Theoretical Max (100% DoD)

Inverter Efficiency (%)

Calculate True Run-Time

UPS / Battery Performance

Estimated Run-Time: -- hrs -- mins

Battery Current Draw: -- A

Usable Energy Capacity: -- Wh

The Master-Electrix Planner

The Ultimate Project Wiring & Load Estimator for Freshers & Contractors

1. Sector

2. Sub-Scope

3. Load Estimation

4. Blue-Print & Wiring Guide

What type of project are you working on?

🏠

Residential

Homes, Apartments, Villas. Focuses on domestic appliances, conceal conduits, and human safety standards.

🏢

Commercial

Offices, Malls, Retail. Focuses on heavy Central ACs, massive lighting grids, and continuous loads.

🏭

Industrial & Pharma

Factories, Pharma Reactors, Heavy Machineries. Intense focus on XLPE Armoured cables, Star-Delta panels, and FLP safety.

Proceed to Scope →

Select the specific project scope:

← Back Proceed to Load Gen →

Appliance & Machinery Load List

We have pre-filled standard items for this scope. Adjust the quantities as needed.

Equipment / Machine Name	Unit Rating (Watts)	Quantity	Total (Watts)

← Back Generate Blueprint ⚡

Project Blueprint & Master Guide

Review your load calculations and official wiring & safety guidelines below.

🖨️ Print Report

Total Connected Load

-- kW

Requires -- connection.

---

Recommended DG / Transformer Size

-- kVA

(Factoring 0.8pf & 20% margin)

Start New Project

☀️ Solar Rooftop Design Engineer

Calculate your exact solar panel requirement, roof layout, and financial savings instantly.

Calculate By:

Monthly Bill (₹)

Monthly Units (kWh)

Average Monthly Units (kWh)

₹

Assumed Grid Tariff (₹ per Unit)

Average Indian default is ₹8.

Select Solar Panel Technology 330W (Older Poly-Crystalline) 400W (Standard Mono-Crystalline) 540W (Modern Mono Half-Cut) - Recommended 580W (High-Efficiency Bifacial)

Calculate Now

Please input your electrical usage on the left.
Calculations will appear here automatically.

Recommended Solar Plant Size

-- kW

Grid-Tied System Capacity needed to eliminate your bill.

🎛️

Total Panels Needed

--

📏

Shadow-Free Roof Area

-- Sq.Ft

💸

Estimated Project Cost

₹ --

🏭

Daily Generation

-- Units (kWh)

Financial Impact

Expected ROI recovered in roughly -- Years.

Yearly Savings ₹ --

Pharma Industries Related

⚠️ Intrinsic Safety (IS) Loop Validator

For hazardous EX zones (Class 1 Div 1 / ATEX Zone 0)

Barrier / Power Supply

Uo - Max Output Volts

Io - Max Output mA

Po - Max Power (Watts)

Co - Allowed Capacitance (µF)

Lo - Allowed Inductance (mH)

Field Device & Cable

Ui - Max Input Volts

Ii - Max Input mA

Pi - Max Power (Watts)

Ci (Device) + Cc (Cable) (µF)

Li (Device) + Lc (Cable) (mH)

Evaluating...

Voltage Match (Ui ≥ Uo) --

Current Match (Ii ≥ Io) --

Power Match (Pi ≥ Po) --

Capacitance (Co ≥ Ci + Cc) --

Inductance (Lo ≥ Li + Lc) --

All 5 conditions must be met for the loop to be certified Intrinsically Safe.

💡 Cleanroom IP65 Lux Layout

Room Length (m)

Room Width (m)

Target Lux Level 300 Lux (General Processing) 500 Lux (Standard GMP Packing/Prep) 1000 Lux (Visual Inspection Area)

Fixture Specifications

Fixture Output (Lumens)

Fixture Wattage (W)

Util. Factor (UF)

Maint. Factor (MF)

UF is typically low (0.5-0.6) in cleanrooms due to flush mounting and HEPA ceiling space restrictions.

14

Teardrop / Flush Fixtures Required

52,100

Total Lumens Req.

0.50

Total Load (kW)

Ensure fixtures are sealed IP65/IP66 and positioned between the turbulent-free zones of HEPA supply diffusers to prevent airflow blockage.

🔋 Critical Process UPS Sizer

Avoid batch loss by sizing backup for Bioreactors, Chillers, and AHUs.

Total Critical Load (kW)

Required Backup Time (Mins)

DC Bus / Battery Voltage 240V DC 384V DC (Commercial) 480V DC (Industrial)

Load Power Factor

Inverter Efficiency

Future Growth/Safety Margin 10% Margin 25% Margin (Standard) 50% Margin

208 kVA

Minimum UPS Rating

104 Ah

Minimum Battery Bank Capacity

At selected DC Bus Voltage

Sufficient to safely bridge the gap before diesel generators parallel and accept load.

⚡ VFD Reflected Wave Calculator

Predicts peak voltage spikes at motor terminals due to long cables on AHUs.

System Voltage (V AC) 400V (EU/Asia) 460V / 480V (US/Global) 690V (Heavy Industrial)

VFD to Motor Cable Length (Feet)

VFD Pulse Rise Time (µs) 0.05 µs (High Speed IGBT / SiC) 0.10 µs (Modern Standard IGBT) 0.50 µs (Older Drives)

1,300 V

Peak Voltage at Motor

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Assumes pulse velocity ~500 ft/µs. Spikes breaking motor insulation class limits require dV/dt filters or VFD-grade cables.

🚜 Motor Startup Voltage Drop

Ensure large pharma chillers & centrifuges don't trip facility power on startup.

Transformer Size (kVA)

Transformer Impedance (%Z)

Motor Specifications

Motor Rating (kW)

System Voltage (V)

Starting Method Direct On Line (DOL) - Highest Surge Star-Delta (Y-Δ) Starter Soft Starter (Typical setting) Variable Frequency Drive (VFD)

1,632 A

Inrush Current

6.2 %

Voltage Drop on Grid

⚠️ WARNING: Flicker may be noticeable.

🛑 Conduit Fill Calculator

Calculates the legal 40% fill limit for multiple cables in standard PVC piping.

Wire Size (Cu / PVC Insulated) 1.5 sq.mm (~8.5 mm² overall area) 2.5 sq.mm (~11.5 mm² overall area) 4.0 sq.mm (~15.2 mm² overall area) 6.0 sq.mm (~22.5 mm² overall area) 10.0 sq.mm (~38.5 mm² overall area)

Number of Wires (Phase + Neutral + Earth)

Conduit Type Rigid PVC (Standard Indian)

25 mm

Minimum Required PVC Pipe

34 %

Actual Fill Ratio

Max safe fill ratio is universally recognized as 40% for >2 wires to avoid thermal damage.

⚡ Transformer & Substation Sizer

Essential for panel builders sizing main ACB/MCCB breakers.

Transformer Size (kVA)

Impedance (%Z)

Secondary Phase-to-Phase Voltage (V) 400 V (Standard IS) 415 V 433 V 480 V

1,391 A

Full Load Amps (FLA)

27.8 kA

Max Short-Circuit (Fault) Current

Minimum required breaker breaking capacity

🏢 Genset (DG Set) Auto-Sizer

Calculates actual Commercial backup Diesel Generator requirements.

Total Lighting & IT Load (kW)

Total Heavy HVAC & Chiller Load (kW)

Pump & Elevator Motor Load (kW)

Diversity Factor (Simultaneous Usage) 60% (Residential Complex) 75% (General Commercial / Malls) 90% (Hospitals / Continuous Process)

250 kVA

Minimum Generator Rating

210 kW

Connected Load

157 kW

Peak Demand (kW)

Sized at 0.8 Power Factor + added 25% safety margin to accommodate motor start inrush.

☀️ PV String Sizer (Cold-Weather)

Prevents cold-weather voltage spikes from detonating your inverter!

Panel Voc (Open Circuit)

Inverter Max DC Volts

Thermal Behavior

Winter Record Low (°C)

Temp Coeff. (%/°C)

20

Maximum Panels in Series String

49.9 V

Voc per Panel at Record Cold

Panels are rated at 25°C. When temps drop, voltage spikes up.

🌍 Grounding / Earthing Resistance

Verified by IEEE standard equations for vertical rod electrodes.

Soil Resistivity (ρ - Ohm-meters) Marshy Ground / Loam (10 Ω·m) Moist Clay / Farmland (30 Ω·m) Dry Clay / Gravel (100 Ω·m) Sand / Very Dry Soil (400 Ω·m) Rocky Terrain (1000 Ω·m)

Rod Length (Meters)

Rod Diameter (mm)

Max Accepted Safety Limit 5.0 Ω (General Domestic / Commercial) 1.0 Ω (Data Centers / Substations / Pharma)

8.4 Ω

Calculated Rod Resistance

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Uses the formula: R = (ρ / 2πL) × [ln(4L/a) - 1]. If it fails, hammer a longer rod, use multiple rods in parallel, or treat the soil with bentonite.

🏭 Panel Builder Component Sizer

Instantly size Contactors and Relays for heavy machinery.

Motor Rating (kW)

System Volts (AC) 400 V 415 V 480 V

Power Factor

Efficiency

Estimated Full Load Amps (FLA) 55 A

STAR-DELTA Setup

Component

Min Rating

Main Contactor (58%)

32 A

Delta Contactor (58%)

32 A

Star Contactor (33%)

18 A

Thermal Overload Relay

Set at 32 A

DIRECT ON LINE (DOL) Setup

Contactor & OLR (100%)

55 A