Installation Manual

Chapter 4: Connecting the AC and the Strings
to the Safety Switch
TheSafetySwitchdisconnectsallungroundedDCconductorsofthecircuittowhichitisconnectedin
compliancewiththeNationalElectricCode,andspecificallyNEC690.35,whichaddressesungroundedPV
arrays.TheSafetySwitchisratedtothemaximumoperatingconditionsoftheinverter.
ThefollowingfigureillustratestheSafetySwitch.
Figure 17: Inside the Safety Switch
Grid Connection Guidelines
l Insinglephaseinvertersconnectedtocornergroundedgrids,connecttheL2terminaltothe
groundedconductor.Whenconnectingtoothergrids,L1andL2areinterchangeable.
l Theconduits,hubsandfittingsmustbesuitedforfieldwiringsystems.
l ThehubsandotherfittingsmustcomplywithUL514B.
l UsetheconduitandwiringappropriatefortheinstallationlocationpertheNEC.Outdoor
installationsmustusecomponentsthatareratedNEMA3Rorhigher.
NOTE
For more wiring information refer to the SolarEdge Recommended AC Wiring Application
Note , available on the SolarEdge website at
http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf
Connecting the AC Grid to the Safety Switch
1. Removethespring-clampterminalinstructionsfrominsidetheswitch.
2. Strip05⁄16''(8mm)oftheACwireinsulation.
3. InserttheACconduitintotheAC-sidedrillguidethatwasopened.
Chapter 4: Connecting the AC and the Strings to the Safety Switch
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00306-1.1
29