When you put shower on it starts off hot but does not maintain the heat and starts to run warm
Gem
November 2009
difference is 1000 watts, go to consumer unit locate the shower fuse and note the RATTING of the fuse device.
8500/230 is rated at 36.9 amps, 9500/230 41.3amps
If your fuse is only 40 amps MAX, 8.5K/Watt is the size to fit