Prysmian Group Voltage Drop vs Electric Master
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Prysmian Group Voltage Drop
Calculate maximum circuit distance and minimum conductor size for required voltage drop. Designed for electrical professionals, it provides detailed information on conductor size, voltage loss, and amperage based on NEC standards.
- Calculate Maximum Circuit Distance
- Determine Minimum Conductor Size
- View Actual Voltage Loss
- NEC Code Selection (2011, 2014, 2017)
- Metric or Standard Conductors
- Amperage Calculations
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Prysmian Group’s Voltage Drop Calculator is a quick and easy tool to find Maximum Circuit Distance and Minimum Conductor Size for the required voltage drop. It is designed for contractors, electricians, and other electrical professionals. The minimum conductor size section will show the required conductor size, actual voltage loss, maximum allowable voltage loss, and maximum amps for the conductor. The amperage values are from the NEC® table T310.15 (B) (16) 75°C rating. Conductor sizes are determined based on the amperage value provided by the user and not the expected loads which in some scenarios may result in a larger conductor size. The Maximum Circuit Distance section shows maximum circuit distance, allowable voltage loss, actual voltage loss, and maximum amps of the selected conductor. Code Selection for NEC® 2011, 2014, and 2017. Metric or standard conductors
Electric Master
This app provides electrical code calculations and a panel planner for electricians. It offers 20 calculators for wire sizing, conduit fill, box fill, and more, all working offline. Generate PDF reports with your logo for inspectors and clients.
- 20+ electrical code calculators
- Offline functionality
- Panel planner and schedule
- PDF report generation
- Supports multiple electrical codes
- No account or ads required
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Every answer names the code table it came from — 310.16, Chapter 9, 250.122, Article 220 — so you can check it, cite it to an inspector, and learn it. That is the whole point. 20 calculators and a full panel planner. All of it works with no signal, in a basement, on a roof, in a crawlspace. PANEL PLANNER + PANEL SCHEDULE Lay out the actual board on screen. Drag breakers, GFCI/AFCI devices, busbars and terminals onto the rail, wire them up, name every circuit. Then export a PDF with your logo: panel schedule, board drawing and a parts list, ready to hand over. NO ACCOUNT, NO ADS - VOLTAGE DROP — branch and feeder circuits, instant 3%/5% check - AMPACITY — NEC Table 310.16 lookup, every size and insulation type - GROUND WIRE — equipment grounding conductor per 250.122 - OHM'S LAW and POWER TRIANGLE - THREE PHASE - PANEL PLANNER — free to enter and draw, core devices included MORE CALCULATORS - WIRE SIZING — the right conductor for the circuit, accounting for ampacity and temperature - CONDUIT FILL — EMT, IMC, RMC, PVC and flexible raceway - CONDUIT BENDING — 9 bend types (90°, offset, 3- and 4-point saddle, rolling offset, concentric, back-to-back, parallel offsets, matching centers), bender presets and an on-screen level - BOX FILL — junction box sizing per 314.16 - DWELLING LOAD — service sizing per Article 220 - NON-DWELLING DEMAND — commercial load calculation - SERVICE ENTRANCE — service and feeder sizing - GROUNDING ELECTRODE — per 250.66 - DERATING — temperature and conduit-fill factors - MOTOR — branch circuit protection per Article 430 - TRANSFORMER — overcurrent protection per Article 450 - FAULT CURRENT — available short-circuit current - EV CHARGER — EVSE branch circuit and load - SELECTIVITY — protective device coordination FOUR CODES, ONE APP NEC 2023 and 2026 - CEC 2024 (CSA C22.1) - BS 7671 - DIN VDE 0100. The app picks the right one for your region, and you can switch any time. Nobody else carries all four. PAY ONCE IF YOU WANT TO Every calculator gives you one free visit first, so you can check the math against your own book before you decide. Then choose a one-time Lifetime purchase and never see a subscription again — or pay yearly or monthly if you prefer. BUILT FOR THE TRUCK, NOT THE OFFICE - 100% offline. No internet, no account, no sign-up. - No ads. No tracking. No data collected. - PDF reports with your company logo and license number, US Letter or A4 - History with job names, side-by-side comparison, Siri Shortcuts, Home Screen widget Not affiliated with, endorsed by, or sponsored by the NFPA, CSA Group or the IET. NEC and National Electrical Code are registered trademarks of the National Fire Protection Association, Inc. Always verify against the adopted code edition in your jurisdiction. Terms: https://laborsam.com/apps/electric-master/terms Privacy: https://laborsam.com/apps/electric-master/privacy
Screenshots
Verdict
The clearest difference is rating: Prysmian Group Voltage Drop at 5.0 against Electric Master's 3.6. Prysmian Group Voltage Drop also leads on in-app purchases (none vs 3) and iOS requirement (11.0 vs 17.0). Electric Master's advantage is update cadence (every 11 days vs every 7 months). On price, ratings volume, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Electric Master sells 3 in-app purchases, starting at $9.99 per month. Prysmian Group Voltage Drop asks for nothing beyond the download.
Prysmian Group Voltage Drop holds the better App Store score, 5.0 against 3.6. Both are backed by a comparable volume of ratings — 6 and 5 respectively.
Prysmian Group Voltage Drop ships an update every 7 months, Electric Master every 11 days. Both last shipped on November 5, 2026.
| Parameter | Prysmian Group Voltage Drop | Electric Master |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) — better | 3.6 (5 ratings) |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 6 — better | 5 |
| Update frequency | Every 7 months | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 8 MB | 73 MB |
| Age rating | 4+ | 4+ |
| Developer | Prysmian Group | Yusuf Can Samiloglu |
Customer experience
Prysmian Group Voltage Drop
Electric Master
In-app purchases
Prysmian Group Voltage Drop
No in-app purchases
Electric Master
- Pro Monthly — All Calculators$9.991 Month
- Pro Yearly — All Calculators$59.991 Year
- Pro Lifetime — All Calculators$119.99
Questions
Is Prysmian Group Voltage Drop free?
Is Electric Master free?
Which has better reviews, Prysmian Group Voltage Drop or Electric Master?
Do Prysmian Group Voltage Drop or Electric Master have ads?
Which is updated more often, Prysmian Group Voltage Drop or Electric Master?
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