Electrician Advice Needed! 14k watt grow room

I'm expanding, and to do so, I plan on adding a Titan Helios 16 (16 light controller w/dual trigger). My question is how big of copper do I really need to run 14 ballasts @ 240v (4.16A each Phantom digital ballast = 58.24amps). I was thinking about runnning a 70amp with 6/3 Romex. Titan recommends a 100amp with 4 AWG copper, but I would never come close to drawing that much and I am kinda maxed out on my main @ 200amps.

Any advice?

#6 nm is not good for 70 amps. Size of overcurrent protection device (OCPD) should not exceed ampacity of wire gauge.

Installation according to mfgr recommendation is smart. Savings on wire is not a good idea, if done right firstly blah blah.

At 56 amps your starting to trip that 70 amp OCPD.

Im surprised they recommend #4 nm on a 100 amp feed as that's rated for 70 amps. A 100 amp ocpd trips at 80.

You should get a 400/320 amp main.

But if you try sometime, you just might find
You get what you need
And I went down to the demonstration
To get my fair shares of abuse
Singing, "We're gonna vent our frustration
And if we don't, we don't blow a 50-amp fuse", yeah
And no, you can't always get what you want

If your going to have all of those running at the same time, a 70 amp would most likely trip. Do the 100 amp and get the proper wire.

Yeah, think I'm just gonna do the 100a with the recommended wire size. I am getting a licensed electrician to do most of the work but wanted to get an idea of what I was getting into.

HashKingCO said:

... I am getting a licensed electrician to do most of the work ..

Click to expand...

Smartest thing I've heard all day.