What should I do if I find that I have a circuit reading 88 VAC?
On FERRUPS units with hardwired outputs where the actual output connections are made, you will find that one of the wires have been fastened to a terminal that has 88VAC there (necessary if one of your circuits are to be 208VAC Single-Phase) instead of one of the 120VAC terminals. Verify with a true RMS multimeter at the proper terminal and reconnect the correct wire in accordance with your Installation Manual