Thanks everyone for there upgrade post. They have been very helpful in planing my upgrades. Warning: this is a long post...
I have attached a block diagram of the upgrades I am planning on our new 2023 22FQS Titanium. I do not have the trailer yet, so everything is planed base on post and videos. Please give me your feedback!
I would like to run a conduit like LearningMore, but the required size of my conduit may be to big. LearningMore used 3/4", but the number and size of wires I am running would need 1" or 1-1/4" (I am not sure). Please give me your opinion on the size of wire I am running in the conduit. Am I being too conservative on wire size (too big)? I plan on using liquidtight flexible nonmetallic conduit.
Link to LearningMore install pictures:
Inside the conduit will be two 30A A/C runs (6 wires), a 20A A/C run for the Air Con (3 wires), and a CAT5 cable for the multi digital control panel. The Shore/Gen 30A input to the RV will run to the input of the Victron Multi, and then back to the existing A/C dist box 30A input. This will add about 40 feet to the main 30A power input to the RV.
The 20A A/C air conditioning circuit will be disconnected from the existing A/C dist box and be connected to the Aux A/C output on the Victron Multi. This will also add about 40 feet of wire to the circuit, but the first 20 feet will be on the larger 30A main line.
30A would normally use #10 wire resulting in an additional 2.1% voltage drop. So I am showing #8 (1.4% drop) in the block diagram.
20A would normally use #12 wire. The voltage drop here would be:
20 feet of #8: 0.7% (assuming 30A current @ 20')
20 feet of #12: 1.2%
For a total added voltage loss of 1.9% to the Air Con. But, if I use #10 from the multi to the Air Con:
20 feet of #10: 0.7%
For a total added voltage loss of 1.4% drop to the Air Con. The block diagram is currently showing #10.
But now for the good news! Let's assume I am willing to turn on Victron Multi power assist any time Shore/Gen power is present. Now all of the voltage loss up to the input of the Victron Multi should be corrected. Right?
Now the added voltage drop would be:
Using 20' #10 for 30A: 1% drop going to existing A/C dist panel.
Using 20' #12 for 20A: 1.2% drop going to air conditioner.
So now conduit would have 6x #10 wires, 3x #12 wires, and a CAT5.
What size conduit? Not sure this would fit in 3/4" conduit.
This has been a long post. I understand if this is too much time/effort. But thanks for any comments.