hello all i have quick question. I have installed some x-10 modules in my apartment i was havening problems with some of them not responding. I unplugged every thing in the apartment to see if they would work then. I got them to work intermentely by doing so but still not all the time but at least some of the time. So i figure it is a noise and or signal strength problem. I did find by plugging in the power strip that my tv and other video devices are plunged into that the modules in question stooped working completely. So my question is i was thinking of getting a noise filter either the 5 amp or 10 amp [Link: smarthome.com] version how do i know what amp i need? Thanks.

You need to determine the current draw of the items that will be plugged into the filter.

A rough, but easy to remember rule of thumb:

5 AMPS = 500 watts

10 AMPS = 1000 watts

I would try two things before you buy anything:
1. try plugging the control for the x10's into a different outlet that is not on the same circuit as the strip that the tv is plugged into. Inother words, an outlet that's on a different breaker. If that works, then your ok.
2. try installing a capacitor across any 220v breaker that you may have in the breaker box. the problem could be 2 phase power. there are posts that can provide specifics on what size capacitor and how to install. If you don't have access to the breaker box or can't mess around with it (apartment rules), then there are filters on the market that you can just plug into any 220 outlet (say a cloths dryer outlet) that will act as filter and correct out of phase problems.
good luck

Yes, I agree - it's probably a phase issue.