I am again replacing a pool pump (don’t ask).
The motor is uprated at 1.5 HP, pulling 10 amps.
The custom is to use solid core wire - which, I found out cannot be bent while connected without breaking the flimsy plastic terminal board.
Hence the idea of switching to stranded.
I know about the differences in cooling characteristics between AC and DC (AC’s on/off pulses serve to cool the wire - DC is always hot - this is why your house uses solid (cheaper) and your car uses stranded (greater surface area for cooling)).
Is there something about heavy motors which require solid, or are the installers just being cheap?
The distance from the switch to the motor is approx. 6’.