Your statement is that, "You are going to start a factory in Gujarat and your question is whether it will be coming under the Factories Act?"
Factors Constituting a Factory
To constitute a factory, three factors are necessary: premises, manufacturing activity, and the number of workers engaged. You are using electrical power of 600 HP. However, the type of manufacturing you are having in the new unit is not mentioned by you.
In case you manage with only 5 workers (in my opinion, a workforce of 5 does not correspond to the power installed by you; there must be a greater number of workers required than what you have stated), then you will not be required to get registered under the Factories Act.
Regards,
Adv. K. H. Kulkarni