main panels and sub panel ampacity tables

[patsy]

i know the table for main panel ampacity what is the sub panel ampacity r they 310.15 for mains and 310.16 bfor sub

 

[Volta]

It is all T310.16 (for those types of wires), with an exception of 310.15(B)(6) only for "main power feders", or service-entrance or -lateral conductors, as 120/240 single-phase for dwelling units. Otherwise, stick with Table 310.16.

 

[patsy]

its a commercial building so i can use for both main panels and subs the one table/

 

[Volta]

Yup. 310.16 is our friend! (With 110.14(C), of course.)

 

[patsy]

i tell yah this one job has realy been helping me understand the code but givin me headaches everyday lol