02-26-2021, 08:38 AM
Hi Rod,
If you want to get a handle on the wattage required, temporarily insert a 10K resistor in place of the pot and put an amp meter in series with the 10K resistor to measure the current. Then take the wire attached to the center post, touch each side of the 10K resistor and note the maximum current shown. This can then be used to calculate the required wattage.
Power (wattage) = Current squared x Resistance. You would typically increase the calculated amount by some factor to the next higher available size.
If you want to get a handle on the wattage required, temporarily insert a 10K resistor in place of the pot and put an amp meter in series with the 10K resistor to measure the current. Then take the wire attached to the center post, touch each side of the 10K resistor and note the maximum current shown. This can then be used to calculate the required wattage.
Power (wattage) = Current squared x Resistance. You would typically increase the calculated amount by some factor to the next higher available size.
