I’ll add a few opinions, although I’m not a professional electrician or a NEC expert.
First, I’d heed tvad’s suggestion about a circuit to the garage. I put in a 50 amp 240V circuit when I had my house built, yes with the plan to get an EV (which I did). However, having a circuit to the garage will be a benefit to somebody at some point who would want to do a workshop, welding, etc., so it is cheap to put it in now, much more expensive later on. I’d also put in a 20 amp 240V outlet right under the main panel, just for an air compressor or something you might want to run from 240V.
Some have mentioned the grounding rods, and rather than test if the one is at specification, it seems easier to just put another one in, according to code of course.
I see absolutely no reason to remove the 100 amp panel to the HT room, it is better to have it and not need it than need it and not have it. That is the same justification for upgrading to the 200 amp main panel. Also, just because it is a 100 amp subpanel, if the loads on the panel are calculated it can be supplied by a lesser amp (for example 60 amp) breaker.
One other detail I’ve learned from listening on Audiogon, the dedicated 20 amp circuit is a major focus, it seems you might be able to do a couple to the HT room. And to go even with 10 ga wire.
If I was redoing the electrical at my house, I’d have added several conduits in various locations where wire could be pulled easily at some future point. A roll-you-eyes but I still would LOVE to have it, a 20 amp 240V circuit to the living room or bedroom, where I could power my computer with the more efficient 240V.
First, I’d heed tvad’s suggestion about a circuit to the garage. I put in a 50 amp 240V circuit when I had my house built, yes with the plan to get an EV (which I did). However, having a circuit to the garage will be a benefit to somebody at some point who would want to do a workshop, welding, etc., so it is cheap to put it in now, much more expensive later on. I’d also put in a 20 amp 240V outlet right under the main panel, just for an air compressor or something you might want to run from 240V.
Some have mentioned the grounding rods, and rather than test if the one is at specification, it seems easier to just put another one in, according to code of course.
I see absolutely no reason to remove the 100 amp panel to the HT room, it is better to have it and not need it than need it and not have it. That is the same justification for upgrading to the 200 amp main panel. Also, just because it is a 100 amp subpanel, if the loads on the panel are calculated it can be supplied by a lesser amp (for example 60 amp) breaker.
One other detail I’ve learned from listening on Audiogon, the dedicated 20 amp circuit is a major focus, it seems you might be able to do a couple to the HT room. And to go even with 10 ga wire.
If I was redoing the electrical at my house, I’d have added several conduits in various locations where wire could be pulled easily at some future point. A roll-you-eyes but I still would LOVE to have it, a 20 amp 240V circuit to the living room or bedroom, where I could power my computer with the more efficient 240V.