Examples
Examples
Try the starting example
- Current (A)
- 10
- Total loop resistance (Ω)
- 0.2
- Supply (V)
- 12
- Voltage drop (V)
- 2
- Load voltage (V)
- 10
- Wire loss (W)
- 20
Try another scenario
- Current (A)
- 11
- Total loop resistance (Ω)
- 0.2
- Supply (V)
- 12
- Voltage drop (V)
- 2.2
- Load voltage (V)
- 9.8
- Wire loss (W)
- 24.2
Calculation method
Calculation method
Voltage drop (V)
a × b
Load voltage (V)
c-a × b
Wire loss (W)
a × a × b
Symbols and units
- a
- Current (A)
- b
- Total loop resistance (Ω)
- c
- Supply (V)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Loop resistance includes both outbound and return conductors. This is not a cable-sizing or installation approval.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
Background reading; this does not imply endorsement or independent review of SumFizz.