StirCrazy wrote:
jkwilson wrote:
LittleBill wrote:
jkwilson wrote:
Going back to an earlier post you mention a toaster oven “ramping up” its power use. That doesn’t make sense. A resistive device will instantly go to full power and then actually fall just a bit as the elements heat. The ramping effect you are seeing may be a problem with your inverter or battery system limiting power on initial demand and could be the source of the air conditioner problem as well.
its not instant, at least not my testing. resistive and ptc type elements, ramp, its less then 2 seconds in my test, but motor's definitely surge harder in my testing.
It will be closer to instant than you can measure. If you are seeing a 2 second delay it’s in your measurement equipment or power source.
I believe him. the resistance of elements change as they heat up and ramp power as they warm up. they never start blasting and go to full power in an instant. the larger the element the longer it will take and it won't be at full power untill the temrature fo that element hits the point where the resistance stops changing with the power thats available.
You have it backwards. Resistance increases as the wire heats. A resistive load will draw peak power nearly instantly, then it will decline slightly and pretty well stabilize. No resistive device will exhibit anything close to a 2 second delay to full power. That would indicate a reactive load.
