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Electrical Engineering Excel Bundle, Cable Sizing, Voltage Drop, Solar Battery, 3 Phase Panel

Name: Electrical Engineering Excel Bundle, Cable Sizing, Voltage Drop, Solar Battery, 3 Phase Panel
Brand: tobulab
SKU: 4602860711
Price: 10.19 USD
Availability: InStock

NowPrice:$10.19

Original Price: $13.59

25% off

•

Sale ends on November 16

tobulab

You can only make an offer when buying a single item

Highlights

Designed by tobulab
Digital download
Digital file type(s): 1 ZIP

Three IEC / metric electrical design workbooks in one download, at a lower price than buying them separately.

1) IEC CABLE SIZING + VOLTAGE DROP
Up to 50 circuits. IEC 60364-5-52 method: installation methods A1 to F and D1/D2, Cu or Al, PVC or XLPE, ambient, grouping and soil factors, next standard breaker, voltage drop and a clear OK / FAIL per circuit. Current ratings calculated with the IEC 60287 thermal method, with safe-side margins; verify against your local wiring rules (or type your own table's value per circuit). Includes a step-by-step worked example.

2) OFF-GRID / HYBRID SOLAR + BATTERY SIZING
Daily load table to PV array, modules per string (cold Voc and MPPT window checks), battery bank, charge controller, inverter with surge check, and a 25-year cost and payback view.

3) 3-PHASE PANEL LOAD SCHEDULE + PHASE BALANCE
Up to 60 circuits on L1/L2/L3, per-phase demand, imbalance %, neutral current, main breaker and feeder size (same calculated IEC 60287 ratings), plus up to three suggested circuit moves to balance the phases.

They work together: balance the board, size its feeder and final circuits, then plan solar for the same loads.

WORKS WITH
A script opened this file in Microsoft Excel for Mac 16.114.3 and ran a full recalculation. Every cell matched the values stored in the file, with no error cells. That test did not type new data. Excel for Windows, older Excel versions and Google Sheets have not been tried. The formula tests ran in LibreOffice. No macros. Each file has a Start Here sheet, a worked example and a printable PDF of the example.

GOOD TO KNOW
- Digital download. Nothing is shipped.
- Estimation aids: check every result against the rules where you work and have a qualified engineer review the design. Not affiliated with or endorsed by IEC.

HOW THIS WAS MADE
The workbooks were designed and built with the help of AI tools. Scripts recalculated the file in LibreOffice and compared it with a separate Python calculation of the same method, across 34 test cases including edge cases.

For your own use and your company's projects. Please do not resell or share the files.

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