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ENPHASE STORAGE DESIGN
CERTIFICATION TRAINING
Which=component=of=the=Ensemble=system=detects=a=grid=failure? A.=Envoy B.=Enpower C.=Encharge=-=ans-✔✔B.=Enpower True=or=false:=PV=systems=with=Energy=storage=but=without=backup=power=do=not=req uire=Enpower.=-=ans-✔✔True Where=do=the=hot=conductors=between=Encharge=and=Enpower=terminate? A.=In=the=IQ=Combiner=box B.=At=the=DER=(distributed=energy=resource)=input=terminals C.=On=the=Encharge=circuit=breaker=terminals D.=On=the=PV=circuit=breaker=terminals Clear=my=choice=-=ans- ✔✔B.=At=the=DER=(distributed=energy=resource)=input=terminals What=is=the=maximum=amount=of=PV=and=storage=that=can=be=connected=to=the=Enpo wer=smart=switch? A.=80A=of=PV=and=80A=of=storage=for=a=total=of=160A B.=80A=of=PV=or=80A=of=storage=for=a=total=of=80A C.=40A=of=PV=and=40A=of=storage=for=a=total=of=80A D.=0A,=PV=and=Storage=is=landed=in=a=backup=loads=panel=-=ans- ✔✔A.=80A=of=PV=and=80A=of=storage=for=a=total=of=160A
Do=we=need=to=install=an=additional=service=disconnect=if=the=Enpower=main=service=br eaker=has=been=installed=as=the=main=service=disconnect? A.=No,=it=is=not=necessary=to=install=an=additional=disconnect B.=It=depends=on=the=use=case C.=Yes,=it=has=to=be=redundant=and=serve=as=a=rapid=shutdown=initiation=device=-=ans- ✔✔A.=No,=it=is=not=necessary=to=install=an=additional=disconnect Why=does=Enpower=need=a=Neutral=Forming=Transformer=to=operate=during=the=grid=o utage? A.=Because=NEC= 2017 =requires=a=transformer=to=have=reference=to=Neutral B.=Because=Encharge=batteries=operate= 240 =VAC=line=to=line=and=split=phase=power=s ystems=require=a=neutral C.=Because=when=the=grid=is=down=the=micro=inverters=operate=on= 120 =VA=-=ans- ✔✔B.=Because=Encharge=batteries=operate= 240 =VAC=line=to=line=and=split=phase=pow er=systems=require=a=neutral The=above=system=was=initially=estimated=to=require=three=Encharge= 3 =equivalent=to=o ne=Encharge= 10 =and=no=soft=starter.=After=the=site=survey,=they=found=that=the=largest= single=load=in=the=backup=load=center,=is=going=to=be=a= 3 =kVA=electric=motor=with=a=st art=current=of= 32 =Amps=at= 240 =VAC=for= 3 =seconds. Is=the=estimated=size=of=one=Encharge= 10 =going=to=be=enough=to=comply=with=NEC= 2 017 =710.15=(A)=without=using=a=soft=starter? A.=Yes,=one=Encharge= 10 =will=comply B.=One=Encharge= 10 =is=ok=because=NEC= 2017 =710.5(A)=only=applies=to=whole=home= backup C.=No,=it=requires=a=minimum=of= 4 =Encharge= 3 =to=comply=-=ans- ✔✔C.=No,=it=requires=a=minimum=of= 4 =Encharge= 3 =to=comply For=partial=home=backup=the=guidelines=in=the=Ensemble=planning=guide=recommend=t he=size=of=the=energy=storage=system=to=be=the=largest=of: -->=Largest=single=load=in=the=essential=loads=subpanel -->=Result=of=load=analysis=of=power,=surge=and=reactive=power
When=the=grid=is=present=during=sun- hours,=this=system=is=supplying=power=to=the=main=service=panel.=What=type=of=loads= will=it=serve=during=a=grid=outage? A.=It=will=not=feed=any=loads=as=it=will=not=operate=during=the=grid=outage B.=It=depends=on=the=time=of=the=day=and=the=irradiance C.=Refrigerator=and=lights D.=Only=lights=because=it=has=only=three=branch=circuits=-=ans- ✔✔A.=It=will=not=feed=any=loads=as=it=will=not=operate=during=the=grid=outage When=will=the=IQ8=microinverters=supply=power=to=the=protected=loads=panel=if=the=gri d=is=down? A.=During=the=day=if=the=generator=stops. B.=IQ8=microinverters=are=grid=forming=so=they=will=operate=day=and=night=with=or=with out=generator. C.=Only=during=sun- hours=and=enough=solar=irradiance=for=the=microinverter=to=operate. D.=During=sun-hours=if=the=generator=is=running=to=provide=the=voltage=reference.=- =ans-✔✔C.=Only=during=sun- hours=and=enough=solar=irradiance=for=the=microinverter=to=operate. True=or=false:=This=system=will=supply=power=during=grid=outages=during=sun- hours=or=at=night=because=the=PV=array=power=is=larger=than=3.5=times=the=largest=sin gle=load=power.=-=ans-✔✔False Which=Enpower=breakers=must=be=ordered=separately,=be=specified=in=the=single=line= diagram=and=be=listed=in=the=bill=of=materials? A.=All=except= 6 B.= 1 =and= 2 C.=All=but= 4 =and= 5 =because=they=are=identical=and=preinstalled D.= 4 =and= 5 =-=ans-✔✔A.=All=except= 6
What=electrical=safety=reason=is=involved=in=the=requirement=that=Encharge=and=Gener ator=breakers=must=have=a=hold=down=kit=to=comply=with=NEC= 2017 =710.15(E)? A.=Both=breakers=are=two-pole= 240 =Volts=and=a=secondary=power=source B.=ESS=and=Generators=are=considered=high=voltage C.=When=the=grid=is=down,=the=Encharge=breaker=will=be=energized,=and=the=Generato r=breaker=can=also=be=energized=if=Enpower=starts=the=generator=to=supplement=energ y=demand.=The=hold=down=kit=prevents=exposure=to=electric=shock=and=arc=flash=if=a=p erson=accidentally=attempts=to=remove=the=breakers=during=a=grid=outage=-=ans- ✔✔C.=When=the=grid=is=down,=the=Encharge=breaker=will=be=energized,=and=the=Gene rator=breaker=can=also=be=energized=if=Enpower=starts=the=generator=to=supplement=e nergy=demand.=The=hold=down=kit=prevents=exposure=to=electric=shock=and=arc=flash=i f=a=person=accidentally=attempts=to=remove=the=breakers=during=a=grid=outage Which=Enpower=breaker=can=be=used=as=PV=rapid=shutdown=initiation=device? A.=PV=AC=combiner=breaker B.=Only=an=external=breaker=can=be=a=rapid=shutdown=initiation=device C.=Encharge=breaker=-=ans-✔✔A.=PV=AC=combiner=breaker Main=and=load=CSR=breakers=have=identical=specifications=with=ratings=ranging=betwe en= 100 =Amps=and= 200 =Amps.=What=does=the=designer=must=do=if=the=required=rating= for=the=load=breaker=is=below= 100 =Amps? A.=Does=not=specify=any=load=breaker=in=the=single=line=diagram=and=on=the=bill=of=ma terials B.=Switch=from=partial=home=backup=to=whole=home=backup C.=Does=not=specify=any=load=breaker=inside=Enpower=and=specifies=a=regular=breaker =inside=the=essential=load=center=as=OCPD=of=the=load=feeder=in=the=single=line=diagra m=and=on=the=bill=of=materials=-=ans- ✔✔C.=Does=not=specify=any=load=breaker=inside=Enpower=and=specifies=a=regular=bre aker=inside=the=essential=load=center=as=OCPD=of=the=load=feeder=in=the=single=line=di agram=and=on=the=bill=of=materials True=or=false:=This=system=was=designed=as=whole=home=backup=with=a= 200 =Amps=C SR=breaker=as=the=system=overcurrent=protection=device=and=service=disconnecting=m eans.=-=ans-✔✔True Regarding=breakers,=is=this=system=correctly=designed=and=code=compliant?
True=or=false:=If=we=had=to=add=a=third=Encharge= 10 =to=an=existing=installation=of=two= Encharge= 10 =currently=interconnected=with=#8=AWG,=we=will=rewire=so=that=all=three=E ncharge= 10 =are=interconnected=with=a=wire=size=larger=than=#8=AWG.=-=ans-✔✔False What=is=the=minimum=wire=size=when=using=CSR=breakers=both=for=main=and=load=bre akers? A.=#1=for=Load=and=#2=for=main B.=#2=AWG=for=both=load=and=main C.=#1=for=both=load=and=main=-=ans-✔✔B.=#2=AWG=for=both=load=and=main True=or=false:=The=wire=size=range=of=Enpower=matching=the=combined=output=wire=si ze=of=the=IQ=combiner=is=#10=to=#2=AWG=for=less=than= 80 =Amps=of=PV=ampacity=but=f or=more=than= 80 =Amps=is=#10=to=2/0.=-=ans-✔✔False What=should=be=the=minimum=feeder=conductor=size=for=90°C=THWN-2? -->=PV=current:= 20 =Amps -->=Encharge=current:= 16 =Amps Select=one=or=more A.=Encharge,=#14=AWG B.=Encharge,=#12=AWG C.=PV=AC,=#10=AWG D.=PV=AC,=#12=AWG=-=ans-✔✔A.=Encharge,=#14=AWG D.=PV=AC,=#12=AWG Encharge= 10 =has=three=AC=disconnects,=one=on=each=Encharge= 3 =base=unit=and=they =are=accessible=without=having=to=use=tools. Why=does=the=jurisdiction=require=a=separate=AC=disconnect=between=Encharge=and= Enpower? A.=The=distance=between=Encharge=and=Enpower=on=straight=line=is= 10 =feet=and=there =is=a=solid=obstruction=between=them B.=There=is=no=Encharge=breaker=on=Enpower C.=Encharge=breaker=in=Enpower=is=undersized
D.=Encharge= 10 =does=not=have=a=single=disconnect=to=shut=down=all=three=Encharge= 3 =base=units=at=the=same=time=-=ans- ✔✔A.=The=distance=between=Encharge=and=Enpower=on=straight=line=is= 10 =feet=and=t here=is=a=solid=obstruction=between=them True=or=false:=The=above=design=complies=with=the=120%=rule=using=either=a= 150 =Am p=or=a= 200 =Amp=main=breaker.=-=ans-✔✔True The=designer=specified=the=PV=breaker=inside=Enpower=as=the=rapid=shutdown=initiatio n=device.=Do=the=two=breakers=in=the=PV=AC=combiner=also=comply=with=Article=690. 2 =of=NEC= 2017 =as=an=approved=alternative=location=for=rapid=shutdown=initiation=devic e? A.=No,=only=a=separate=AC=disconnect=between=the=AC=combiner=and=Enpower=is=a=c ode-compliant=alternative=to=the=PV=breaker=inside=Enpower B.=Yes,=the=breakers=in=AC=combiners=comply=with=Article=690.12=of=NEC= 2017 =as=an =approved=alternative=location=for=rapid=shutdown=initiation=device C.=No,=the=article=applies=only=to=the=IQ=combiner=branch=circuit=breakers=-=ans- ✔✔B.=Yes,=the=breakers=in=AC=combiners=comply=with=Article=690.12=of=NEC= 2017 =a s=an=approved=alternative=location=for=rapid=shutdown=initiation=device What=should=be=the=minimum=conductor=size=of=the=Encharge=feeder=for=90°C=THWN -2? A.=#8=AWG B.=#12=AWG C.=#10=AWG=-=ans-✔✔B.=#12=AWG Which=note=number=corresponds=to=the=Ensemble=components=in=charge=of=sensing=t he=energy=usage=of=the=whole=home=and=how=many=components=are=there=on=the=no te? A.=Note=7,=Two=components B.=Note=2,=Two=components C.=Note=1,=One=component=-=ans-✔✔A.=Note=7,=Two=components In=this=single=line=diagram,=the=PV=rapid=shutdown=initiation=device=is=shown=as=a=sep arate=AC=disconnect.=The=AHJ=notified=the=installation=company=to=move=the=function ality=of=PV=rapid=shutdown=initiation=device=to=the=breakers=labeled=as=note= 6 =becaus
