I have a 240VAC twist-lock outlet that was installed to power a repeater/coupler for X-10 home automation gear. I seem to remember (very dimly) that it's against the code to spawn multiple 110VAC outlets downstream from that 240VAC. Since I am out of neutral and ground connections and have no more knockouts left in the circuit box, it would be handy to be able to wire in some new 110VAC outlets to the 240VAC one since the coupler/repeater only uses a few watts.
Does anyone know for sure what the rules are about 110VAC outlets downstream from a 240VAC one? I know one consideration is that the 240AC outlet be connected to a ganged breaker so that if there's a problem, both legs of the circuit will be disconnected if either one trips it. That's how it's set up right now, so if that's the only constraint I should be good to go . . .
TIA
-- Bobby G.