/diy/ - Do It Yourself

>>2514375
Of course you can. The question is how much amps are you going to push trough cables? You need to apply appropriate reduction factors depending on installation method and number of circuits inside a conduit (pic related - https://www.legrandgroup.com/sites/default/files/Documents_PDF_Legrand/Solutions/Power_guide/Power-Guide-Legrand_EX29008.pdf ). After you determine those then you choose appropriate circuit breaker, check that you didn't exceed maximum permissible length and then adjust cable size if you don't have enough amps. In your instance if you have two single phase 3 conductor cables this means you have 2 circuits - total current carrying capacity is reduced by 0.8. Then if you look at another table on page 20 and if I assume you'll be installing this according to method B1 (on/inside masonry wall) then you get 249A, reduce that by 0.8 = 199A. From thermal design point of view cables and insulated conductors are the same, but I don't have access to standards to check if there is some specific directive about conduits and what can go inside.

t. not electrician