Raymarine RAY91 - Page 53

1
W aterprooffuseholdercontainingasuitably-ratedinlinefusemustbefitted.
Forsuitablefuserating,referto:
In-linefuseandthermalbreakerratings .
2
Productpowercable .
3
Drainwireconnectionpoint.
BatteryconnectionscenarioA:
SuitableforavesselwithacommonRFgroundpoint.Inthisscenario ,ifyourproduct’spowercableis
suppliedwithaseparatedrainwirethenitshouldbeconnectedtothevessel’scommongroundpoint.
BatteryconnectionscenarioB:
Suitableforavesselwithoutacommongroundingpoint.Inthiscase,ifyourproduct’spowercableis
suppliedwithaseparatedrainwirethenitshouldbeconnecteddirectlytothebattery’snegative
terminal.
Powercableextension
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.
Cablesandconnections53