I'm new here. I'm not a home theater expert or power expert so I'm looking for advice on what to purchase to solve a problem I have.
I'm in Afghanistan and have an office setup with a MacBook Pro, Dell U2711 monitor, Epson WF3540 printer, Air Purifier, and few other things. Half of this stuff requires 110V power and my camp receives 220V power from diesel generators, so its definitely not the best power source. I have a Tacima 2000VA voltage converter supplying my 110V power. However, since moving to my new office, I've noticed some things.
For example, my Dell monitor button LCDs come on and off at random. When I plug my iPhone 5 into the USB port of the monitor, the touchscreen portion of the phone acts wonky, not always registering the touch input. I don't know if there is too much or too little power coming through, but I'm betting that its too little power, due to the gauge of electrical wire that was used in this new office.
I was thinking of buying an Uninterruptible Power Supply to correct the power voltage levels. However, years ago, I had an issue with using an 110V APC UPS plugged into a voltage converter (wouldn't turn on). I've been looking at the following options:
CyberPower Enterprise GreenPower UPS CP1500AVRT 1500VA 900Watt 4 x 5-15R Battery/Surge Protected 4 x 5-15R Surge Protected Outlets UPS
TRIPP LITE OMNI1500LCD 1500 VA 825 w 8 Outlets UPS
CyberPower CP1500PFCLCD PFC Compatible 1500VA 900W Pure Sine Wave Tower UPS
Does anyone have any input on whether there are issues with these types of UPS running when connected to voltage converters and not directly to a wall outlet? These are all 110V UPS and would fry if connected directly to the wall (which is 220V).
On another note, taking into consideration the following devices (the biggest power drawing devices):
Dell U2711 monitor
2009 MacBook Pro
Epson WF3540 All-in-One Printer
Is a 2000VA voltage converter overklll? Should I go smaller (1500VA or 1000VA)?
How can I do the math on these items so I can add up the power draw myself?
Thanks in advance.