Well … It took some doing … But it finally happened.
The power went out!
I had been pushing things, trying to find the limits … So in a way it was what I was looking for …
But somehow not what I had been hoping for.
Three different events … Three different scenarios … Three different sets of gear … But the end result the same.
The power went out.
One of the failures was pretty simple to figure out, easy to duplicate and explain mathematically.
It turns out if you ask for too much power from an inverter it will shut down … Not unlike what happens when you ask for more than 20 amps of power out of a standard 20 amp wall outlet.
Apparently running my mixing board, an audio processing rack, a couple of wireless systems , a keyboard set up, a bass amplifier, two guitar amplifiers and three QSC MX1500a power amplifiers on stage with the Houston Bernard band for an outdoor festival was asking too much of my 2000 watt sine wave inverter …
Looking back I probably should not have been so surprised!
The only real question for me now was why it had not happened sooner.
A decent inverter will actually produce more power than the wattage it is rated for … For a while. My inverters are capable of handling up to twice their rated output for very short periods of time (a couple of seconds) … Plenty of time to handle the surge current required to turn on some electrical equipment … Easily handling my 1 & 1/2 horsepower compressor for hours on end.
The compressor needs a 20 amp circuit to run … At home it would pop the glass fuse when I forgot and tried plugging it into the 15 amp outlet in the garage … The required fix used to be running a heavy duty 100′ extension cable to the basement to find a 20 amp circuit. These days I just plug the compressor into one of the 2000 watt inverters in the truck with no muss, no fuss … No extension cords required!
The other two failures I have not been able to duplicate … Or been able to explain mathematically … I am beginning to suspect that a loose connection on the 12 volt DC line may have been the “culprit” … I will keep you posted.
Now to figure out the best way to keep the power from going out!