Personally, I wouldn't put up with it and tell him point blank that he is either dating me or dating his fucking phone.
There is a right time and a right place to text people... Doing it while someone else is there talking to you is plain rude.
Your going to the breaker box and cutting the power to the whole house to get his attention is severe - This means this texting addiction he has has become unmanageable and is a problem.
Addiction... that is what this is.
In winter with nothing else to do I spend a lot more time on computer. There is a reward (pleasure) with each post, each click, each thing I do. If it wasn't satisfying I would do something else. And there is always the need to read one more post, answer one more message, to send a quick word to a person.
Now that its spring and the weather is lovely, I'm spending much more time outside - but I find myself feeling just a wee bit guilty for ignoring my online friends.
Perhaps for him that guilt is bigger, the pleasure of the 'click' is addictive for him?
I read stuff like this:
http://janderson99.hubpages.com/hub/Text...and-Deaths
And I can't help but note that drug addicts are so obsessed with their drug of choice that they too partake of high risk activities. Perhaps Texting is his drug of choice.
Regardless, it is a problem - a big enough problem where you are resorting to extraordinary means to get his attention....
I think you need to draw a hard line or three here, give him his texting time, but also he has to give you his time and attention and turn off the fucking phone. Failure to do so is grounds for divorce.
You shouldn't have to be resorting to turning of the electricity to get his attention. That is desperate and passive aggressive and tells me that this is a serious issue in the relationship.