I have to replace 4 night storage heaters adding a fifth but I only have a four way old wylex cu protected with a 63amp 30mA legrand rccb. I have to install 2 elnur 2.55kw heaters and 3 elnur 1.7kw heaters, is it safe to put 2 of the 1.7kw heaters into one 15amp rewireable fuse if they are both on s...
