In this episode, when Timo walks in to tell Leo's future they both greet each other and mention that they are finally glad to meet each other. However, Timo has been coming around for many episodes already including spending much of the time of a hurricane with Leo in his bar so this episode is way out of order from the other episodes.
When testing the electrical fence, Walter puts the volt meter on the fence. Both electrodes are on the cyclone fence; so, even if the fence was electrified, the volt meter would not show it. However, the cyclone fence itself was grounded, and would therefore instantly discharge any charge straight to the ground. It could not, therefore, be electrified.