The insteon dimmers 1000w are nothing more than the 600w models with two fins added for heat dissipation.
In a multigang box setup each fin you break off derates it 200w.
So a 1000w dimmer in between two relay or ordinary switches(no dimming) 1000w-200w-200w=600w!
So if you payed extra to end up with 600w then that is a bummer.
If you place 1000w insteon dimmer in between two dimmer switches(any type) it must be derated further.1000-200-200-?(manufacturer's formula)=???
was put there because some manufacturer's derate 100w in this case,others 50w.Leviton Plant is five minutes away would have to check what their's is.
I've been reading many forums to research my final choice of upgrade from X-10 and it is coming to an end soon.
Insteon forums are plagued with problems,low quality complaints,noise problems.Basically it looks like X-10 all over again.
Smarthome's customer service is andgetting even worst than X-10(you can still reach smarthome by phone though).
Smartlab's are alone in their quest to improve and develop products for Insteon.They may tell you otherwise but it is what it is.
I deal with Leviton,Intermatic and all the big electrical names and all concur to say Z-Wave will win the battle in the end .... unless.
Unless Smartlabs can get some serious Industry backing which Z-Wave has and is constantly adding on(with newproducts I must add).
Just to take the time to look over X-10 forums and then read over Insteon forums and you will be shocked to see the similarities.
Z-Wave on the other hand is good to high quality products with BIG BOY'S backing them(Leviton,Intermatic +++).
Most of the questions on the Z-Wave forums pertain to setup and software.Product return rate is very low from what my guy at Leviton tells me.
If you read the problems with Z-Wave are swiftly and efficiently resolved and it works reliable and true.
I really would prefer if BIG BOY'S would back Insteon as well to give us choices but in my opinion once the smoke clears...Z-Wave will come out on top.
All the big boy's are within 20km of where I am(Leviton,Intermatic,Schneider Electric etc,...)and I have contacts in all of them.
Actually get to try out stuff occasionally that has not even been announced yet.
Maybe I have shifted towards Z-Wave but for healthy competition and consumer choices would prefer both Insteon and Z-Wave become the standards in HA.
Just my 2cents .... sorry for the long 2cents.
Cheers