Calculating Voltage Drops

Instructions on how to use this calculator:

  1. Use the drop down box to select your starting voltage. Pick whether your system runs on 12V or 24V.
  2. Select if you're running AC or DC power. More than likely you will be choosing 12V DC or 24V AC.
  3. Enter in the amount of current in amps. Please Note: 1 amp = 1000 mA. Ff your camera draws 500 mA, enter 0.5 in the text box for Current (Amps).
  4. Enter in how many feet of cable you will be using.
  5. Enter what size cable you are using. The standard for CCTV is usually 18 awg
  6. Click the 'Calculate' button. Click 'Cancel' to reset the form and start again.

1. Initial Voltage

2. AC / DC

3. Current (Amps)

4. Cable Length (ft)

5. Cable Gauge (AWG)

   

 

Note: Industry standard is a voltage drop of no greater than 10%.