Hooking up Generator to gas connection legal?

Hi guys i am thinking about buying a generator now i was wondering is it allowed by the sui gas company to hook up our generators to the gas line i.e make them run on gas? or is a permit required?

thanks!

there is a dedicated generator thread. This issue has been raised in that thread as well.

http://www.wiredpakistan.com/forums/viewtopic.php?id=226