Who should pay for storm damage?

We had an electrical storm which damaged the intercom system,security system and also now we are having trouble with running a several appliances without the circuit breaker activating. The strata manage is prepared to fix the intercom as part of common property but will not pay for security system or the fault that occurs at the fuse box located inside the unit. The security system was part of the development not something that I have had installed.The electricity to the fuse box and power points is supplied from a common meter box that is common property.Shouldnt strata pay for my issues?