This is an interesting question that I have found myself asking lately.
I rant the first test through my cabinet with the following conditions.
I used a Coopers ‘kit and kilo’ kit of their Sparkling Ale.
It was mixed as per instructions to make up 23l.
BEFORE pitching the yeast I took 11.5l out into a second carboy.
Yeast was divided and pitched.
So, I am trying to diagnose a power issue that we have in the new house.
Maybe twice or three times a month the Earth Leakage Breaker will pop in the dead of the morning, cutting power to the house. Luckily I havent been caught out yet missing my train due to the alarm being off, but it is only a matter of time I guess.
We dont have much turned on at that time in the morning, only a handful of mobile phone and laptop charges and the occasional plug pack for various devices, a couple of computers and oh yeah, the fridge.
On discussing this matter with a few electricians on the OverClockers.com.au forums, it was decided to try and isolate the issue, despite the fact that it might take 12 months to do so.