ups

Is it cost economic to use a EV Car Battery or external for home supply outage, use a backup generator or Solar PV. To cover a standing load of 0.5kw and cooking Maximum demand of 3kw it seems a small generator or 15Kwh battery might suffice. What would people suggest as there is no money any...

So my Granddad (who is in hid mid 80's) has had a UPS on his router for a number of years as he lives in a rural area and gets lots of power cuts and power dips. The UPS was 10-11 years old and had started to become unreliable, so I ordered him a new one. In the mean time I sent him this via...

Some may know that I have a APC Smart 1500VA UPS that protects my network and rack server at my home. It is normally at a 25% load. The UPS was original manufactured in September 2007 and I bought it second hand on ebay in 2013. I have replaced the batteries twice since having it and are due to...

Just a few pics that I took the other day; is it your bog standard generator control panel or is it quite specialised? Don't know anything about the history of it, whether it works, etc... as it was just in a warehouse that I was in briefly moving tables into for long term storage purposes...

Just wondering what would have caused the following. I moved my NAS box from my kitchen to above my hallway data cabinet, and when I plugged the USB cable in between my NAS and the UPS, it shorted out all the 5v USB ports on my NAS. Unplug and re-plug the USB cable on the UPS end, same thing...

Just wondering what BS7671 says about fixed sockets being RCD protected when being fed from a portable UPS (i.e. removable rack type UPS) when the the UPS is operating on battery mode and the Line & Neutral conductors are isolated from Earth. (Effectively a Isolated Terra based earthing system.)...

I need to get two new 7ah 12V Lead Acid batteries for my 1000va Belkin UPS as they are shot after 3.5 years of use. They clearly need replacing as the UPS just shuts of immediately on power loss and the batteries are very hot and slightly swollen out. Ones even resting around 6V. They are...

Hi all, I'm currently in the process of building a ups to back up a cctv system. I have been using this as a guide http://www.instructables.com/id/Super-Simple-Super-Cheap-DIY-UPSCCTV-system-fro/ I've got as far as the relay and I'm now stuck as this guide does not explain it very well (not at...