Probably depends on the line...20 amps..30 amps or what? Also, probably depends on the particular REL that you own, as some have much larger amps than others.
I run my two REL’s off one line and my tube mono blocks off another dedicated 20 amp line...but my mono blocks are NOT wall sucking juice monsters ( I have a ss amp that is) and as such...there is no issue with running the mono blocks and the preamp off the same dedicated line. These days, one could question why anyone really needs wall sucking juice monsters, LOL.IME, some of the best sounding amps are low to mid power...at best.
I run my two REL’s off one line and my tube mono blocks off another dedicated 20 amp line...but my mono blocks are NOT wall sucking juice monsters ( I have a ss amp that is) and as such...there is no issue with running the mono blocks and the preamp off the same dedicated line. These days, one could question why anyone really needs wall sucking juice monsters, LOL.IME, some of the best sounding amps are low to mid power...at best.