Raymarine AXIOM PRO - Page 38

P
owercableextension
Ifyouneedtoextendthelengthofthepowercablesuppliedwithyourproduct,ensureyouobserve
thefollowingadvice:
•Thepowercableforeachunitinyoursystemshouldberunasaseparate,singlelengthof2-wire
cablefromtheunittothevessel'sbatteryordistributionpanel.
•Ensurethattheextensioncableisofasufficientgaugeforthesupplyvoltageandthetotalload
ofthedeviceandthelengthofthecablerun.Refertothefollowingtablefortypicalminimum
powercablewiregauges.
Cablelengthinmeters(feet)WiregaugeinA WG(mm
2
)for
12Vsupply
WiregaugeinAWG(mm
2
)for
24Vsupply
<8(<25)16(1.31mm
2
)18(0 .82mm
2
)
16(50)14(2.08mm
2
)18(0 .82mm
2
)
24(75)12(3.31mm
2
)16(1.31mm
2
)
>32(>100)10(5.26mm
2
)16(1.31mm
2
)
Important:
Beawarethatsomeproductsinyoursystem(suchassonarmodules)cancreatevoltagepeak sat
certaintimes,whichmayimpactthevoltageavailabletootherproductsduringthepeaks.
Important:T oensurepowercables(includinganyextension)areofasufficientgauge,ensure
thatthereisacontinuousminimumvoltageof10.8Vdcattheendofthecablewhereitenters
theproduct’spowerconnector,evenwithafullyflatbatteryat11Vdc.(Donotassumethataflat
batteryisat0Vdc.Duetothedischargeprofileandinternalchemistryofbatteries,thecurrent
dropsmuchfasterthanthevoltage.A“fullyflat”batterystillshowsapositivevoltage,evenifit
doesn’thaveenoughcurrenttopoweryourdevice.)
Grounding
Ensurethatyouobserveanyadditionalgroundingadviceprovidedintheproduct’ sdocumentation.
Moreinformation
Itisrecommendedthatbestpracticeisobservedinallvesselelectricalinstallations,asdetailed
inthefollowingstandards:
•BMEACodeofPracticeforElectricalandElectronicInstallationsinBoats
•NMEA0400InstallationStandard
•ABYCE-11AC&DCElectricalSystemsonBoats
•ABYCA-31BatterychargersandInverters
•ABYCTE-4LightningProtection
Warning:Productgrounding
Beforeapplyingpowertothisproduct,ensureithasbeencorrectlygrounded,in
accordancewiththeinstructionsprovided.
Warning:Positivegroundsystems
Donotconnectthisunittoasystemwhichhaspositivegrounding.
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