Board Thread:Questions and Answers/@comment-74.103.122.228-20130522155554/@comment-23270394-20130924213230

After some experimenting (and making an account) I made this rather simple settup. MFSU is set to output a signal when full, so when it is no longer using energy the block breaker (on the right) will break the connection. The other line leads to a deployer (on the left), and has a NOT gate. When the MFSU isn't full, it will place down a cable to complete the circuit. The other two gates are pulse formers, which aren't required, but can prevent problems from chunk loading. Also, there is probably a simpler way of doing this, but I don't know buildcraft very well.