Installation Instructions

4.3Powerconnection—EV-2
ThepowerfortheEV-2unitisprovidedbythe
SeaTalkng®backbone.
•TheEV-2unitmustbeconnectedtoaspur
connectionontheSeaTalkng®backbone.
•SeaT alkng®requiresONE12Vdcpowersource.
Thiscanbeprovidedbyabattery.
Note:Ifyourvesselhasa24Vsupplya
suitablevoltageconvertorisrequired.
Warning:Positiveground
systems
Donotconnectthisunittoasystemwhich
haspositivegrounding.
4.4SeaTalkng®powerconnection
point
Smallsystems
Ifthebackbonelengthis60m(197ft)orless,the
powerconnectionpointmaybeconnectedatany
pointinthebackbone.
Largesystems
Ifthebackbonelengthisgreaterthan60m(197ft),
thepowerconnectionpointshouldbeconnectedat
apointthatcreatesabalancedcurrentdrawfrom
eachsideofthebackbone.TheLoadEquivalency
Number(LEN)isusedtodeterminethepower
connectionpointforthesystem.
IntheexampleabovethesystemhasanoverallLEN
of10,sotheoptimumconnectionpointwouldbeto
have5LENeithersideoftheconnectionpoint.
In-linefuseandthermalbreaker
ratings
TheSeaT alkng®network’spowersupplyrequiresan
in-linefuseorthermalbreakertobetted.
In-linefuseratingThermalbreakerrating
5A
3A(ifonlyconnectingone
device)
Note:
Thesuitablefuseratingforthethermalbreaker
isdependentonthenumberofdevicesyouare
connecting.Ifindoubtconsultanauthorized
Raymarinedealer.
SeaTalkng®systemloading
Themaximumloading/LENforaSeaT alkng®
systemdependsonthelengthofthebackbone.
LoadingtypeBackbonelengthTotalLEN
Unbalanced
20m(66ft)
40
Unbalanced
40m(131ft)
20
Unbalanced
60m(197ft)
14
Cablesandconnections
21