I have an application where I will be building a panel with 4 VFDs, all rated for 1hp.
In nfpa79(2007)it shows that multiple motors can share branch protection if they are all under 1hp (A.7.2.1).
Does this hold true for vfds as well? Are there other codes (UL 508a?) that might apply?
If it is possible, how would one size protection?
Thanks for your help.
In nfpa79(2007)it shows that multiple motors can share branch protection if they are all under 1hp (A.7.2.1).
Does this hold true for vfds as well? Are there other codes (UL 508a?) that might apply?
If it is possible, how would one size protection?
Thanks for your help.