Quote Originally Posted by Cuppa View Post
I would concur with Megatexture's reply. 30A doesn't leave a lot of leeway once a few things are switched on ..... but of course it depends what accessories you have (or may add in the future).

MT, there is a pic of the shunt in the ad linked to in the OP.

Same seller also has similar rated to 200A if required, but 100A would suit most camping set ups.
Thanks mate ill have another look must have missed that pic