I know y do it , but why !
When running alternating current you run solid wire , when running direct current you run stranded . Why ?
Forum Discussion
I've run into boat wire in some high quality rigs, nice stuff for 120 vac runs, stranded, tinned wires.
http://www.bestboatwire.com/marine-wire/flat-triplex-ac-boat-wire/12-awg-triplex-ac
http://www.bestboatwire.com/marine-wire/flat-triplex-ac-boat-wire/12-awg-triplex-ac