A $112\mathrm{.}5$ kva, $480$ v primary to $\backslash (120/240\backslash$mathrm$\{$v$\}\backslash )$ secondary$,$ three$-$phase transformer with a $300$ amp secondary overcurrent device will require at least size secondary conductors

a$.\backslash (\backslash$quad $300\backslash$mathrm$\{$kcmil$\}\backslash )$

b$.\backslash (\backslash$quad $500\backslash$mathrm$\{$kcmil$\}\backslash )$

c$.\backslash (\backslash$quad $750\backslash$mathrm$\{$kcmil$\}\backslash )$

d$.350$ kcmil

A $112\mathrm{.}5$ kva, $480$ v primary to $\backslash (120/240\backslash$mathrm$\{$v$\}\backslash )$ secondary$,$ three$-$phase transformer with a $150$ amp primary overcurrent device will require at least size primary conductors.

a$.4/0$ AWG

b$.2/0$ AWG

c$.\backslash (1/0\backslash )$ AWG

d$.3/0$ AWG

Overcurrent protection for the secondary of a transformer rated $600$ V or less having a primary current rating of $9$A or more must be set at not more than percent of the primary current rating.

a$.100$

b$.170$

c$.150$

d$.125$

The primary overcurrent protection for a transformer rated $1,000$ V$,$ nominal, or less, with no secondary protection and having a primary current rating of over $9$A shall be set at not$-$more than percent.

a$.125$

b$.300$

C$.167$

d$.200$