Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Electrical
Transformer Calculator
Determine the primary current draw of a transformer given its output voltage, output current, and efficiency. Use this when sizing transformers for power supplies, HVAC systems, or industrial equipment.
Fill in the required fields to see your result.
Electrical
Conduit Fill Calculator
Determines the minimum conduit diameter needed for a given number and gauge of wires per NEC fill rules. Use it when planning new electrical runs to avoid code violations and overheating.
Fill in the required fields to see your result.
Key differences
| Transformer Calculator | Conduit Fill Calculator | |
|---|---|---|
| Category | Electrical | Electrical |
| Inputs required | 4 | 2 |
| Result | Primary Current (A) | Minimum Conduit Size (inch) |
| What it does | Determine the primary current draw of a transformer given its output voltage, output current, and efficiency. Use this when sizing transformers for power supplies, HVAC systems, or industrial equipment. | Determines the minimum conduit diameter needed for a given number and gauge of wires per NEC fill rules. Use it when planning new electrical runs to avoid code violations and overheating. |