That is why I said separate circuits. I had
two completely isolated 15 A circuits installed
and I use three separate circuits for powering
my A/V components.

I doubt it could do even 1400 watts ( 7 channels
into 8 ohms ) for more than a very brief period.

Unless you are listening at close to reference
levels driving all channels you should be o.k.

But if you are using six or more 4 ohm speakers,
forget about it, as they say :-)