Agreed. The sideways thing is really hokey.Canada is ahead of us on this one for sure... I still thing a sideways mount would be a hard sell around here even if 240.81 were amended.
I think I would run the conductors to the bottom & side of the panel before I turned it sideways.
I know the older (pre 1940) MO panel had breakers pointing 'upside down'.
The ones I'm thinking of would be 1970s vintage, eight circuits or so and by all appearance made to install with the top breakers pointing down.I know the older (pre 1940) MO panel had breakers pointing 'upside down'.
I did find an adapter frame that allowed QO breakers to be installed in an MO-8 enclosure.
My 1960 QO catalog page is not definitive as to the position of breakers in QO6 and QO8 panels, but the way it lists the box dimensions I think the breakers are intended to be sideways not up and down.
ITE EQ 4, EQ 6, & EQ 8 panels also had breakers on top, Cutler-Hammer, GE, & Bryant, had the same type of panels where the breakers on top handles were down when on.