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2.8 Electrical installation
• Thecablesandplugsmustberoutedsothattheyare
protected against moisture.
• Thecablesandplugsmustnotlieonthesubstrate,
theroofsurfaceortheground.
• Thecablesandplugsmustberoutedsothattheyare
protectedagainstUVradiation.
• Thecablesandplugsmustbeprotectedagainst
animal bites.
• Connectionsthatarenotpluggedinmustbeprotected
from dirt and moisture during transport, storage and
duringtheinstallationperiod,asonlyplugged-in
connectionsmeettheirrespectiveprotectionclass.
• Observethepolarityofthecablesandplugsduring
connection.
• PVmodules,junctionboxes,cablesandplugs
mustbecheckedfordamageandcontamination.
Only undamaged components may be installed.
• Theminimumbendingradiusofthecableandstrainrelief
mustbetakenintoaccount.
• Thecablesmustnotberoutedoversharpedgesand
cornerswithoutprotection.
• Alwaysconnectthecableswithasuitableidenticalplug,
donottrapthemandprotectthemfrommechanicalstress.
• Ensurethatthecablesareroutedsothatthereare
noloops(minimisetheriskofinductionduring
thunderstorms).
• ItisrecommendedtoplacePVmoduleswiththesame
orientationandinclinationinastringtoachieve
maximum yields.
• Connectthemodulestringtoaninvertersuitable
forthelayout.
2.9 Equipotential bonding, grounding and lightning
protection
•Therearegroundingholesonthemoduleframesfor
connectingthePVmodulegroundingandtheseare
markedassuch.Pleaserefertothecorrespondingmodule
datasheetforthepositionofthegroundingholes.
Properequipotentialbondingofthe
system components must be ensured
inaccordancewiththelocallyapplicable
guidelines, regulations and standards.
ThePVmodulegrounding must be
implementedinaccordancewithnational,
regional and local guidelines, regulations
and standards.
2.7 Safety during electrical installation
Thefollowingsafetyinstructionsmustbeobserved
atalltimes:
• Workmayonlybecarriedoutbyqualiedpersonnel.
• Theapplicablesafetyinstructionsandregulations
mustbeobserved.
• Evenwithlowlighting,theopencircuitvoltage(VOC)
is applied.
• DonottouchthePVmoduleswithbarehands.
• Donotwearmetallicjewellerywhenworkingwiththe
PVmodules.
• Usedryandinsulatedtoolsandinsulatinggloves.
• ThePVmodulesmustbedry,cleanandfreeof
damage during installation.
• DonotmodifythePVmodules.
• NeverconnectordisconnectPVmodulesunderload.
Thereisariskofelectricarc.
Theexistinglightningprotectionconcept
ofthebuildingmustbeobserved.
ThepotentialintegrationofthePVsystem
intothelightningprotectionconcept must
beagreedwiththecorrespondinglightning
protection expert. National, regional and
local guidelines, regulations and standards
mustbecompliedwithatalltimes.
Recommended mounting type for grounding connection
M4 screw
Washer
Serrated washer
Grounding cable lug
Washer
Washer
M4 nut