Figuring Volts Watts and Electrical Amperage
May 20, 2014 by: Dave Rongey
How to Calculate Electrical Loads and Circuits using Ohms Law: The Most Common Electrical Calculation using Ohms Law
Understanding and Calculating Electrical Circuit Loads
Electrical Question: I am trying to calculate an electric circuit for my kiln.
- I am making the kiln using Kanthal element wire coils.
- The coil itself is 16 ohms, making 3500 watts, and drawing about 14 amp’s. I wish to have another coil too.
- I know if I add this coil in a parallel connection with 1st coil, I will get more watts at same voltage but will my amperage rise?
- I think it won’t double as I think it would in a series connection and what do you think it would be?
- As I want my kiln to have over 6000 watts heating power but don’t know if the amps will rise too much if I set it up in parallel for my wall plug and I think that is about 20 amp’s or so.
- I get the feeling this will draw about 17 amp’s or so.
Background: David from Brisbane, Australia.
Additional Comments: Seems very helpful and a simple nice clean look.
Thanks for your electrical question David.
How to Calculate Electrical Loads and Circuits using Ohms Law
- David, this all sounds fine, however if you want to be extremely accurate then just use one of the ohm’s law formulas to find out what your electrical load will actually be.
The Most Common Electrical Calculation of Ohms Law
To find out the Amperage when the voltage and watts or resistance is known simply make this electrical calculation:
Watts / Volts = Amps
3500 watts / 240 volts = 14.6 amps
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