Product Manual

ManualsBrandsSterling ManualsBattery ChargersPro Charge Ultra 12V 40A (3 out) Battery Charger

A/C installation (input to charger)

Wiring, using ring or captive spade connections and a proper crimping tool attach the A/C cables Live ( line ) Neutral and Earth / Ground. Repeat

the procedure for the breaker side of the install, support the cable every 18 inches/ 0.5 metre and protect from sharp edges when passing through

bulkheads and all other openings as per any standards which apply to the installation.

D/C installation (output from charger)

The closer to the batteries you fit the charger the better. Not only

do you save expensive cable you also get better performance from

the charger.

The cable should be properly rated 105 deg C fire resistant. do not

use solid cable or speaker wire

Choosing cable- unlike A/C conductors, D/C are very sensitive to

voltage drop. The longer the cable runs the larger the cable

thickness needs to be, ensure only quality fire retardant cable is

used.

IMPORTANT

D/C - Fuse selection, as per the

diagram each positive output from the

charger to the battery must be fused.

Choose a fuse that is about 20%

higher amperage rating than the

maximum rating of the charger, and

round it up, remember this fuse is

primarily protecting the cables and not

the product. E.g. a 20 amp charger

would have about a 25 amp fuse, a 60

amp charger about a 75 amp fuse. A

full range of fuses and fuse holders

are available from Sterling.

Ground / bonding / earthing . This is

extremely important and often overlooked

there are, in effect, 3 grounds,

1)the earth wire ( A/C input, the ground ) ,

2) the Chassis / bonding ground ( going to

a vehicle body / boats bonding system,

the bolt on the side of the charger )

3)the D/C negative.

In most installations all these will end up

at the same point, ie the A/C power source

should be connect to the boat/vehicle

chassis ( for safety ).The chassis earth will

also go there, and the D/C neg should

also go there, in effect bonding the total

system together ensuring any fault to the

chassis will blow a fuse. This could vary

for steel/aluminium boats.

Earth /chassis

boats bonding

12 or 24 v battery bank

AC circuit breaker

Any outputs not being used should be linked

across to one that is, this is not a requirement

for these new models but is good practice as it

helps spread loads etc.

D/C fuse

20% larger

amperage than

charger output

D/C fuse

20% larger

amperage than

charger output

D/C fuse

20% larger

amperage than

charger output

10 amp Length of conductor ( cable ) to and from power source