# Electric Ref: Wire Size, Fill

> Electrician's wire size, conduit fill & voltage drop calculator. Works offline.

Canonical page: [https://chrome-stats.com/d/com.wittyapps.electricref](https://chrome-stats.com/d/com.wittyapps.electricref)

## Overview

- **ID:** `com.wittyapps.electricref`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** witty apps
- **Category:** TOOLS
- **Downloads:** 7
- **Version:** 1.0.1
- **Last updated:** 2026-08-02
- **First published:** 2026-07-16
- **Publisher country:** KR
- **Size:** 23 MB
- **Data as of:** 2026-09-09
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.wittyapps.electricref)
- **Privacy policy:** [https://cleverlywittyapps.notion.site/Privacy-Policy-396c23508849818f8f76f7db1cf3498b](https://cleverlywittyapps.notion.site/Privacy-Policy-396c23508849818f8f76f7db1cf3498b)

## Description

Type the amps, get the wire size. Pick a conduit, see how many conductors fit. Electric Ref answers the questions electricians ask every day — in three taps, fully offline.<br><br>SIZE WIRES CORRECTLY<br>- Amps to conductor size with temperature correction, conductor bundling adjustment and termination limits applied automatically<br>- Copper and aluminum, 60/75/90°C insulation<br>- Small-conductor breaker caps built in<br>- Every answer shows WHY — the code articles and factors behind it<br><br>CONDUIT &amp; BOX FILL<br>- Max conductors for EMT, RMC, IMC, PVC 40/80, ENT, FMC, LFMC and more<br>- THHN, XHHW, TW/THW wire types<br>- Box fill with device, clamp and ground allowances<br><br>MORE FIELD TOOLS<br>- Voltage drop (DC and AC methods, any power factor, conduit material)<br>- Motor full-load current, conductor and breaker sizing<br>- Equipment grounding and grounding electrode conductor sizes<br>- Transformer currents, Ohm&#39;s law wheel<br><br>REFERENCE CHARTS<br>- Hole saw and knockout sizes (triple-checked)<br>- NEMA plug and receptacle configurations<br>- Motor starter sizes, wire color codes<br>- Burial depths, conduit support spacing, wire properties<br><br>BUILT FOR THE FIELD<br>- 100% offline — works in basements, new construction, anywhere<br>- Big glove-friendly controls, screen stays awake<br>- No account. Your data never leaves your phone.<br><br>ONE-TIME PURCHASE<br>The free version includes the Ohm&#39;s law wheel, daily wire sizing and core reference charts. Electric Ref Pro is a single one-time purchase that unlocks every calculator and chart.<br><br>No subscription. No ads. No feature removals. Ever.<br><br>Values are based on the National Electrical Code®. Reference only — always verify with your locally adopted code edition and AHJ. NEC is a registered trademark of the National Fire Protection Association, which does not endorse this app.

## Rankings

- #2,885,636 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.INTERNET`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`
- `com.wittyapps.electricref.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Similar extensions and apps

- [Electrician Calc: Wire & Load](https://chrome-stats.com/d/com.bitapp.electrical.tools.calculator.wireload)
- [ElectricianCalc NEC Calculator](https://chrome-stats.com/d/company.doublevision.electriciancalcpro) — 20 users
- [Electrician Calculator +](https://chrome-stats.com/d/com.electriciancalculatorplus) — 7 users
- [Electrician Calculator Pro 26](https://chrome-stats.com/d/com.flysky.electriciancalc) — 15 users
- [Wire Size Calculator](https://chrome-stats.com/d/com.k4y.wiresizecalculator)
- [Wire Size & Gauge Calculator](https://chrome-stats.com/d/com.Wire_Size) — 2,159 users
- [Wire Size & Voltage Drop Calc](https://chrome-stats.com/d/com.helostudios.wirecalc) — 40 users
- [Wire Size NEC 310 Calculator](https://chrome-stats.com/d/com.electools.wire_size_calculator) — 464 users
- [Wire Size Calculator](https://chrome-stats.com/d/com.bariskode.wire_size_calculator) — 8,883 users
- [Conduit Fill NEC Chapter 9](https://chrome-stats.com/d/com.electools.conduit_fill_calculator) — 263 users, 3.50 / 5
- [AWG Calculator: Wire Size](https://chrome-stats.com/d/awg.calculator.app) — 17,339 users
- [NEC Conductor Size Calculator](https://chrome-stats.com/d/com.necfreefinal.android.standardwirecalc_free) — 20,940 users, 2.83 / 5

---

Source: [Chrome-Stats](https://chrome-stats.com/d/com.wittyapps.electricref)