A power control system (PCS) regulates current so that busbars and conductors are not loaded beyond their ratings, which can be lower than the sum of all connected sources. With a certified PCS, the busbar can be loaded up to its full rating instead of following the 120% breaker sizing rule, and the PCS current settings can be used for NEC Article 690 and 705 design current calculations. PCS-controlled busbars and conductors still need properly rated overcurrent devices, and the maximum PCS current setting must never exceed the busbar rating or conductor ampacity. Generac PWRcell 2 is certified to UL 3141 and listed to the UL 1741 PCS CRD. Its PCS functions are Power Export Limit, Busbar Overload Control and Feeder Conductor Overload Control, and they are set during password-protected commissioning by a qualified person.
requiresc1 verified · fact Qualified person
Only qualified people may commission the PCS or set or change its maximum operating current; Generac commissioning also needs a password.
sec=h88 h=6d1cda0ffb8esec=2.3.8.6 h=13f07c533fa9sec=2.2.8.6 h=b4abbda45b6cverified by: review-workflowverified on: 2026-10-24
c2 drafted · lead Export limitation
Scope: products Generac PWRcell 2
Power Export Limit (PEL) is one of the PCS functions on Generac PWRcell 2, alongside busbar and feeder conductor overload control.
sec=h88 h=6d1cda0ffb8eresponse_timec3 verified · fact nominal 1.95 SEC
Scope: products Solis S6-EH1P(3.8-11.4)K-H-US
Conditions: Measured open-loop response time of the PCS on the Solis S6-EH1P hybrid inverter
sec=4.5.2 h=bb84389b07e7verified by: review-workflowverified on: 2026-10-24review note: possible conflict with c4 (same source; check the conditions)
c4 drafted · lead nominal 4.2 SEC
Scope: products Solis S6-EH1P(3.8-11.4)K-H-US
Conditions: Longest steady-state time of the PCS on the Solis S6-EH1P hybrid inverter
sec=4.5.2 h=bb84389b07e7review note: possible conflict with c3 (same source; check the conditions)
related_to c12implements c10