Simply Koi and More Koi

with out filter i would guess 17550 . but I'm probably wrong again .

I've tested my mains and i got 243 volts so im on 240

your heater 3000 watts your plug is rated at 13 amp your main is 240 volts a little help ! if you x voltage by the amps it will give you the max wattage that the plug can take before the fuse will blow i.e 240 x 13 = 3120 watts or 3.12 kw or for a better reading dived the wattage by the voltage to g...