Question:  What happens if I try to put more than the officially supported devices on a single HelixNet powerline?  Will the extra devices go online or even power up, will it take down the powerline?  
Answer: HelixNet doesn't prevent a user from connecting and using more than the supported number of units on a powerline.  The user will see start to see  degraded audio performance if the traffic on the line is too great and perhaps a failure of the added unit to even power up.  The power draw from the unit could potentially take down other units on the cable depending on cable topology.  But as soon as you remove the extra devices, the power should come back automatically, no reset required.
Each HelixNet base station powerline can provide approximately 45W for connected devices or both powerlines provide 90W for connected devices. 
It is not recommended to exceed the documented system limits of 10x Helixnet BPs per digital powerline