The W4 Mains Tester is a must if you hook up.
The W4 Mains Tester is a must for all traveling and plugging into a site mains point. It is essential to ensure the site mains supply is safe and wired correctly before you plug your van into the supply. This W4 Mains Tester will do all the checks that you will need. It will test that the mains has a neutral and importantly and earth connection. It will also ensure that there is no reversed connection which is an important check to be done.
Make sure you check every time before plugging in. The electric supply may well seem to work ok but with a reversed line / neutral can be very dangerous.
The tester is used on 230 volt in 13 amp sockets.
