I concur.
Little off thread but, the hose spigot is dumbfounding.
I do not think 1/20th is in the formula. That is 20 divided by I=ground fault current in milliamps. Please correct me if I am wrong.
1 amp is 1000 milliamps. 50 x 20 = 1000
Yes of course. Thanks for correction. So there is this which is back in line with your concern.
Yep 1/10th of one second is normal. The ones I tested were taking 2 seconds or more to trip.
The voltage is constant, the current is variable. According to that chart these are the approximate trip times based on the load:
06 ma = 5.6 seconds
10 ma = 2.8 seconds
20 ma = 1 seconds
30 ma = .6 seconds
40 ma = .4 seconds
50 ma = .3 seconds
Having said that unless I’m missing something the numbers on the chart aren’t even close to the trip times when you compared to the formula T = (20I)1.43.
For example:
(20/06)1.43 = 4.78 seconds
(20/20)1.43= 1.43 seconds
Yep. That’s where I got the “1/20th of 1 amp in less than half of one second”.