wbartram
Member
Fitting a Galvanic Isolator to a Targa 34
Items required
1.Zinc Saver / Galvanic Isolator about £79.00 (Sterling Power Products)
2.8 Meters of marine standard earth cable
3.2 x Cable butt connector and suitable crimping tool
4.4 x Black Heat shrink tubing
5.2 x Ring Terminals
6.Cable ties
7.1 x small tube Clear Silicone sealant
8.2 x small Pan head screws for fitting Zinc saver to bulkhead
9.Various tools, screw driver, cable cutters, etc
10.Multi-meter
Time Taken about 1 hour, difficultly rating 5 / 10
1.Remove the four small slotted screws holding the shore power RCD in place
2.Gently prize the back plate from the hull using a screw driver to break the silicone seal
3. See attached PicturesOverload Trip /Earth Cable
4.You will now be able to see the required earth cable entering and exiting the back of the sealed case, unscrew the four cross point screws holding the back cover of the RCD.
5.You will see that the earth cable is not connected to the RCD but looped though using a butt connector.
6.Cut the earth cable each side of the butt connector and strip back about 10mm of insulation.
7.Now cut your new earth cable into two four meter lengths
8.Slide two suitable lengths of black heat shrink insulation over the end of the existing earth cables, (you will note that one goes to the shore power connector and the other to the boats earth bonding system).
9.Attach one length of new earth cable to each of the existing earth cables using the two new butt connectors, crimp and insulate using the Shrink wrap.
10.Note which of the new earth cables goes to the Shore power connector and mark the end with a cable tie.
11.Check the connections with a multi-meter place on continuity check
12.Pass both of the new earth cables though the hole on the hull which the shore power RCD normally sits in.
13.Leave the RCD out of place for the time being
14.Remove all cushions in the engine bay area and place out of harms way
15.Open the engine hatch, and remove the large storage box if fitted, three screws.
16.Now remove the forward cockpit drain hose on the port side by loosing the jubilee clip
17.Here comes the fun bit!
18.Look up, aft and under the port side where the drain hose was and you will see the light coming though the hole where the shore power connection was in place, with two new shiny earth cables.
19.Reach up and route the new cables along the cable ducting and fix with cable ties, the objective is to bring the cables down to the main bulkhead at the font of the engine compartment next to the 240v socket, and breaker box for the bow truster.
20.Fix the Galvanic Isolator next to the 240v socket / breaker box using two pan head self tapping screws.
21.Note the new earth cable with the cable tie and attach a ring terminal using a suitable crimp tool, not forgetting to place the back shrink wrap over the cable first!
22.Connect this to the Gold connection marked shore power.
23.Do the same with the remaining earth cable and connect to the terminal marked bonding system.
24.Test the system as described in the manual, using a multimeter
25.If all is well reseal the shore power connector with silicone sealant, and reassemble.
Items required
1.Zinc Saver / Galvanic Isolator about £79.00 (Sterling Power Products)
2.8 Meters of marine standard earth cable
3.2 x Cable butt connector and suitable crimping tool
4.4 x Black Heat shrink tubing
5.2 x Ring Terminals
6.Cable ties
7.1 x small tube Clear Silicone sealant
8.2 x small Pan head screws for fitting Zinc saver to bulkhead
9.Various tools, screw driver, cable cutters, etc
10.Multi-meter
Time Taken about 1 hour, difficultly rating 5 / 10
1.Remove the four small slotted screws holding the shore power RCD in place
2.Gently prize the back plate from the hull using a screw driver to break the silicone seal
3. See attached PicturesOverload Trip /Earth Cable
4.You will now be able to see the required earth cable entering and exiting the back of the sealed case, unscrew the four cross point screws holding the back cover of the RCD.
5.You will see that the earth cable is not connected to the RCD but looped though using a butt connector.
6.Cut the earth cable each side of the butt connector and strip back about 10mm of insulation.
7.Now cut your new earth cable into two four meter lengths
8.Slide two suitable lengths of black heat shrink insulation over the end of the existing earth cables, (you will note that one goes to the shore power connector and the other to the boats earth bonding system).
9.Attach one length of new earth cable to each of the existing earth cables using the two new butt connectors, crimp and insulate using the Shrink wrap.
10.Note which of the new earth cables goes to the Shore power connector and mark the end with a cable tie.
11.Check the connections with a multi-meter place on continuity check
12.Pass both of the new earth cables though the hole on the hull which the shore power RCD normally sits in.
13.Leave the RCD out of place for the time being
14.Remove all cushions in the engine bay area and place out of harms way
15.Open the engine hatch, and remove the large storage box if fitted, three screws.
16.Now remove the forward cockpit drain hose on the port side by loosing the jubilee clip
17.Here comes the fun bit!
18.Look up, aft and under the port side where the drain hose was and you will see the light coming though the hole where the shore power connection was in place, with two new shiny earth cables.
19.Reach up and route the new cables along the cable ducting and fix with cable ties, the objective is to bring the cables down to the main bulkhead at the font of the engine compartment next to the 240v socket, and breaker box for the bow truster.
20.Fix the Galvanic Isolator next to the 240v socket / breaker box using two pan head self tapping screws.
21.Note the new earth cable with the cable tie and attach a ring terminal using a suitable crimp tool, not forgetting to place the back shrink wrap over the cable first!
22.Connect this to the Gold connection marked shore power.
23.Do the same with the remaining earth cable and connect to the terminal marked bonding system.
24.Test the system as described in the manual, using a multimeter
25.If all is well reseal the shore power connector with silicone sealant, and reassemble.
