THE NUMBERS, EXPLAINED
How to use this calculator.
Separate incompatible control groups each use one module capacity. Wire quantity counts individual conductor lengths; no current, voltage or installation guidance.
Start with your inputs
Enter turnouts by control group, turnouts supported per module by group, wires per turnout by group, average wire run per turnout by group (m). Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Turnouts by control group | 8,5 |
| Turnouts supported per module by group | 4,2 |
| Wires per turnout by group | 3,2 |
| Average wire run per turnout by group (m) | 2,3 |
A worked example
With the example inputs above, control modules by group is 2, 3. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Control modules by group | 2, 3 |
| Conductor length by group (m) | 48, 30 |
| Unused module outputs | 1 |
How this is calculated
Control modules by group
Round turnout count divided by compatible module capacity up.
Conductor length by group (m)
Multiply turnouts, wires per turnout and average run length.
Unused module outputs
Sum module output capacity left after connecting all turnouts.
Symbols and units
- a
- Turnouts by control group
- b
- Turnouts supported per module by group
- c
- Wires per turnout by group
- d
- Average wire run per turnout by group (m)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions and limits
Separate incompatible control groups each use one module capacity. Wire quantity counts individual conductor lengths; no current, voltage or installation guidance.
Calculations use the values you enter. Blank or invalid inputs show an error instead of silently substituting zero. Results are displayed to useful precision; calculations retain the underlying numeric precision.
Questions about this tool
What does the result tell me?
Control modules by group; Conductor length by group (m); Unused module outputs. The result applies to the method and inputs described above. Check the units and assumptions before using it in a decision.
Why might another calculator differ?
Differences in units, rounding, timing or model definitions can produce different answers. Compare the input definitions and the method, rather than only the final number. For this tool: Separate incompatible control groups each use one module capacity. Wire quantity counts individual conductor lengths; no current, voltage or installation guidance.
Are my inputs stored or sent to AI?
Calculations on this page happen in your browser. The separate AI question finder sends its submitted conversation to OpenAI; these calculator fields are not sent. Favourites and recent tool names are stored locally. A shared link contains the inputs you choose to include.
Further reading
OpenStax: Solve proportions and their applications ↗
Background reading; this does not imply endorsement or independent review of SumFizz.
Review status
Software example and browser checks are recorded in our quality report. No external expert review is claimed. Created with coding assistance; calculations run as ordinary browser code.
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