IPC Standard 2221 (formerly 275) gives charts for this.
Specifically Figure 6-4, A and C.  Depends upon if
these traces are internal or external and how much
degree rise allowed in the trace (how much the
trace is allowed to heat above ambient).

Just my observation, best to go by the
charts, but roughly it goes like this:

 For the same cross sectional area and degree rise
 of a specific trace, an external trace can handle
 roughly twice the current of an internal trace.

Examples:

 External: 400 sq. mils w/10C rise ~ 10 amps (Figure A)
 Internal: 400 sq. mils w/10C rise ~  5 amps (Figure B)

 External: 150 sq. mils w/45C rise ~ 10 amps (Figure A)
 Internal: 150 sq. mils w/45C rise ~  5 amps (Figure B)

Regards, Doug McKean

> Eoin Carroll wrote:
>
> Hi All,
>     Can someone please answer the following question for me as I am
> not an electronic
> engineer. Can a Printed Circuit Board handle 12 amp inductive, 10 amp
> resistive. If so
> what size tracks would be needed. Thanking you all in advance for your
> help.