pianotuna wrote:
PI unit has the advantage of being field serviceable and a limited life time warranty.
Only the hard wire versions are field serviceable, the portable versions must still be returned to the manufacturer for repair.
104 volts is too low for cut off voltage for my comfort. Fix the problem by using an autoformer.
And TRC engineers likewise feel 102 vac is suitable. :R
I am not sure what you mean by "trip delay".
If you mean the time before power is reconnected then the PI unit waits 136 seconds vs 128 seconds for the Surge Guard unit.
The TRC Surge Guard series avoid nuisance trips by employing a 6" - 8" trip delay
before disconnecting power for 128" ... Progressive EMS units do not offer this feature.