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Itisrecommendedthatbestpracticeisobservedinallvesselelectricalinstallations,asdetailed
inthefollowingstandards:
•BMEACodeofPracticeforElectricalandElectronicInstallationsinBoats
•NMEA0400InstallationS
tandard
•ABYCE-11AC&DCElectricalSystemsonBoats
•ABYCA-31BatterychargersandInverters
•ABYCTE-4LightningProtection
Grounding—Dedicateddrainwire
Thepowercablesuppliedwiththisproductincludesadedicatedshield(drain)wireforconnectionto
avessel'sRFgroundpoint.
ItisimportantthataneffectiveRFgroundisconnectedtothesystem.Asinglegroundpointshould
beusedforallequipment.Theunitcanbegroundedbyconnectingtheshield(drain)wireofthe
powercabletothevessel'sRFgroundpoint.OnvesselswithoutanRFgroundsystemtheshield
(drain)wireshouldbeconnecteddirectlytothenegativebatteryterminal.
Thedcpowersystemshouldbeeither:
•Negativegrounded,withthenegativebatteryterminalconnectedtothevessel'sground.
•Floating,withneitherbatteryterminalconnectedtothevessel'sground
Warning:Positivegroundsystems
Donotconnectthisunittoasystemwhichhaspositivegrounding.
Grounding—additionaldedicateddrainwirerequired(CP470only)
TheCP470requiresanadditionaldedicateddrainwire .Thiswiresupplementsthedrainwire(shield)
thatispartoftheproduct’spowercable.
CP470sonarmodule—additionalgroundingconnection
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