Hi guys. A friend of mine is setting up a business servicing caravans. He is plugging into the mains to do some testing and his rcd tests are obviously taking out the house rcd. I know there are battery packs available to keep the power on for electronic devices/routers etc if we have to turn the power off for customers working from home. I don't have one myself. Would these sort of things be suitable for testing an rcd on a portable caravan or any caravan for that matter ?
Thanks
Gary