Originally Posted by RaisingCajun
What is everyone's experience with a surge guard? Is it a must have or are they a waste of money?
Normally they just sit there and display voltage and current.
But what happens if you have a "power Flicker"?
This is where the lights go out and almost immed come back on.. Well if your air conditioner is conditioning then the compressor stops and tries to re-start with a full head of pressure.. NOT GOOD, it stalls and overheats and times out. This damages it over time and at $1,000 (rounded) per replacement.. That is EXPENSIVE.
Also when power comes back and everybody's compressors and such are kicking back in you really don't want to see how that can spike the power levels, voltages go crazy for a very short period of time.. This near 3 minute hold off. lets it settle down to normal levels.
The SURGE GUARD brand holds the power off for nearly 3 minutes to allow the compressor to start normally.. The Progressive Industries models can be set that way (Default is 15 seconds).
They also shut you down if power "Browns out" (Voltage drops below say 105 or 109) This too is damaging to the air conditioner (And possibly other stuff) but the surge guard protects you
And high voltage
And high/low frequency. All of which are damaging .