The fact that we don't have a sign on a cusp does not make a planet in that sign "weak." Intercepted is not weak - no planet is "weak." It shows that the influence works independent of the general inclination to approach the house affairs through the sign of the cusp and whatever planet rules that sign. As I've noted, it shows a very wide house, encompassing three sign energies, which would mean when any planet transits through that house it would have a long stay and a wide range of experience.
Remember, the planets always express themselves. While the signs on our cusps show our general inclination of approach in those life areas, those areas only express when a planet occupies that sign, or when a hot spot is set off by a progression, transit, eclipse point, a major planet conjunction point, a Solar Return emphasis, or other such indicators.
An intercepted planet is still very strong, and will show its influence every time something makes an aspect to it. It may work as a background influence, or a non-obvious influence, but it will still show itself. My Venus in Taurus in the 10th is intercepted, but no one would ever think it was not a powerful influence in my life! And I can assure you that Scorpio transits to my 4th are very powerful, since they aspect quite a few of my planets.
When two cusps share the same ruler, obviously we look to that ruler to see what "governs" the affairs of those houses, and we will often see similar movement in both areas as its ruler moves through its yearly dance with itself and all the other planets in our charts. Just remember that the outer Invisible Triad of Uranus, Neptune, and Pluto work out transpersonally and collectively, and if we want to see what's going on in our personal and interpersonal affairs we must reference the traditional rulers of the signs.
Unless you're a global force majure, you'll usually understand more about your life affairs by looking at Saturn as ruler of Cap and Aquarius, Jupiter as ruler of Sag and Pisces, and Mars as ruler of Aries and Scorpio. And even world rulers and major players are under the traditional rulers, though their decisions may work out as Uranian, Neptunian, or Plutonian energies in the world.
So please take a new look at how interceptions work if they apply in your chart, since it's a very powerful influence even though those signs aren't on a cusp. And of course, they might be if you approach cusps as zones of influence rather than hard lines fixed in space-time.
Robert Wilkinson ovaj mi je ulio malo nade
tako nesto...
i to u 3.kuci koja mi je najvishe naglashena......Dok nisam prochitala o ovoj tzv zakljuchanoj sputanoj energiji umetnutih planeta,Bila sam svjesna svog mjeseca u vodoliji,venere i tih znachenja,al Poshto sam riba/shkorpija dupla voda koja lako povjeruje u sve shto chuje i pretvori se u to.Sad neshto bash ne bih!
z HVALA PUNO!:dm5:
dakle znaci koji nisu dovoljno materijalizovani jer su upravo vrhovi kuca ti koji nam daju materiju, ASC i kada se on pojavi, odredi ceo horoskop ... 
