Progressive Dynamics PD4045 - Page 2 - Fiberglass RV


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Old 06-17-2010, 07:04 AM   #15
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Here's what the PD service guy emailed me:

"The Shore AC power cord will come into the unit to the main breaker , netrual bar and ground bar. The AC power is then distributed to 120 Volt items through the AC breakers , neutral and ground bars.

The large Black and White wires from the DC distribution panel go to the battery. + Black - White

You DC items go to the individual numbered wires , corresponding to fuses . + side

Your return side of DC items go to a ground bar which in turn is connected to the DC side of the system and battery. Or sometimes the chassis is the DC return and the lights , etc are connected through the chasis."

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Old 10-01-2013, 10:22 PM   #16
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I have been browsing many forms on discussions on the best way to install the PD4045. I have taken away much, and both Randy at best converter and Mark at PD have been a big help.
I have one more thing I want to be sure of before I throw the switch. I have tried to attach a photo to no avail, so bare with me.
I have attached my Batt + to the connection on the right rather than the upper one as I have a battery shut off on my battery box (this is what the install directions indicate). I have removed the Jumper from the converter that would have linked both Positive terminals. Wiring the Batt + to the other terminal is for systems which have no battery shut off (again which is indicated in the install manual).
So the question is, do I have this wired correctly? I seem to get the impression I have to run additional wires from the battery if I am going to utilize the shut off option on this converter, but this is where my "experience" in wiring runs out.
Any thoughts, comment or suggestions would be appreciated.
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Old 10-02-2013, 10:23 AM   #17
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You took the 12 volt DC positive jumper out, this is the power connection from the output of the converter to your 12 volt positive buss. It looks like you brought in power from the battery on the hot pink line from the battery positive. (I dont know only you can see the other end of the hot pink wire.) if this is true as wired the converter will do nothing since its output is connected to nothing. The 12 volt buss is recieving battery power assuming its connected to the battery positive through your connected disconnect switch. You need to plan to get the output from the converter to your batter so it will get recharged. I do not see that happening the way it is currently wired. As wired if you turn off your battery line and are plugged in to 120 volt AC the converter will not power your 12 volt circuts since you choose this wiring path. That is OK if that is what you want.
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Old 10-02-2013, 10:42 AM   #18
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Because PD does not provide an internal schematic for the PD-4045 I think that this is a question for them.

The ones I have installed have all, with the exception of attaching the converter power wire to a breaker, been as out-of-the-box, including two that had battery disconnect switches, without any known problems.
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Old 10-02-2013, 08:56 PM   #19
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Here is the pic I had intended to add. I understood that the two positives on the converter were "input" rather than out put. Would not the converter supply 12 power to amenities via the fused output to the amenities?
For clarity the locations labelled batt + is from the battery rather than to the battery. Likewise for the Batt -.
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Old 10-02-2013, 10:12 PM   #20
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photo...Click image for larger version

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Old 10-03-2013, 12:10 PM   #21
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I'm not entirely sure what you're asking, but where the battery connects, that does two things. 1. Runs the camper off the battery when shore power is off, and 2. Charges the battery when shore power is on. Yes, accessories will run off the fused side.
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Old 10-03-2013, 09:53 PM   #22
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Thanks Jared J. i do understand that element of the converter.

See, my confusion is that (aside from the sad excuse of an install guide that comes with this converter) I don't understand the theory or the wiring on the converter when it comes to the two batt connections on the board and what the difference is and what I need to do to wire it one way or the other (meaning with or without the battery shut off.) I would like to include the battery shut off in the wiring of the system, but I am not confident that I know how it needs to be wired (as mentioned by stevebaz).

So... Maybe I am better off putting the jumper back in, connecting the my battery lead to the main "batt+" on the converter and removing my battery shut off. Not my preference though.
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Old 10-04-2013, 08:04 AM   #23
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I though that the "jumper" issue had to do with requirements in certain countries that mandated a battery disconnect. As mentioned, I connect PD-4045's as shipped, and have put disconnect switches in without issues.
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Old 10-04-2013, 10:35 AM   #24
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You have to decide what you want your battery disconnect to do.
Do you want it to just disconnect the battery to the circuit or do you want to kill the whole battery and negative buss.
As wired from the factory with the jumper you connect the battery to the black + post with the jumper in place with the proper size wire and with circuit protection from the battery. When the battery is used to power the system the power flows through the 12 volt system through the jumper to the 12 volt buss. Plug in the 120 volt converter and 12 volt DC is pushed into the Battery to charge it and through the jumper power is fed to the 12 volt buss. Some people put in a disconnect switch between the battery and the Black + post on the converter board. this isolates the battery but will not kill the 12 volt buss if plugged in to 120 volt AC. power will still flow through the circuit through the jumper keeping it live.

I do not know if this should be done you should check with the manufacturer about running this converter without the battery connected but still running 12 volt circuits through the converter. In the old days this was a NO NO.

The manufacturer uses this jumper to isolate the 12 volt buss. if you take out the jumper the converter is isolated from 12 volt output to the 12 volt buss. Using the proper wire size and wiring protection from the battery with a proper disconnect you can bring the charge line from the converter to the disconnect, the disconnect to the battery and the disconnect to the post on the 12 volt buss. To isolate all 3 circuits takes a special disconnect not a single pole switch. Or 2 disconnects one between the converter and battery ( Charge Line) one from the Battery to the 12 volt buss ( supply line to 12 volt buss)

As above this should be checked out with the manufacturer to make sure your not hurting anything when you open and close these switches. Placement of these disconnect switches must not interfere with other systems on your trailer such as warning alarms and emergency disconnect braking systems. Consult a professional in your system so you can be assured of a proper installation. I am not a professional and do not profess to be.
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Old 10-04-2013, 08:26 PM   #25
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Thanks Steve. The detail you provided is very valuable. I see now why the set up I have currently, will not work.
I think I will go the default route and reinstall the jumper and not worry about a battery shut off. If I really want to isolate the battery, for what ever reason, I can always throw the breakers, disconnect the shore power and\or pull the connectors off the battery. Thanks for all your help guys! Still welcome other thoughts in the meantime.
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Old 10-15-2013, 02:10 PM   #26
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Well I final had a chance to finish the instal and it appears all is well. I reinstalled the jumper (left my battery positive wire on the terminal in the picture as it has gotten colder and the wire is less that cooperative). All the appliances, outlets and furnace are working properly. I checked the voltage at the battery and was reading around 13.49 v so the charging system is active. I will monitor it for a while to ensure the charge changes to trickle and there is no smoke coming out of the TT
Thanks again for all the comments and suggestions.
Cheers.
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