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Hi, I have a small trailer and have an inverter and transfer switch installed. Here's a picture. The transfer switch has input from 120 and inverter and output to the fuse/breaker box. The transfer switch allows all the 120 outlets and devices to work, using the inverter, when running...

Hi, This is the busbar. 400 amp solid copper https://www.amazon.com/gp/product/B08JKZ4GCN/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

Hi, The Class T is only 6" from the battery. It's very close. Someone else on this forum told me that was acceptable.

Sorry to hijack the thread...here is my design https://diysolarforum.com/threads/new-install-comments.52676/#post-673358

Thank you..appreciate the input

I do have an inverter, but it's off.

Hi, I've been advise to have the cut off switch before the Class T-fuse so everything is cut off from the battery if needed (even the fuse) . Beginner here...seen it both ways, not sure of the prefered way. Could the Class T fuse be tied into the bus bar and the cutoff switch moved before...

Hi, small travel trailer, no slides or leveling jacks. Yes, all loads are less than 30 amps. Not sure I need a bus bar. The line from the WFCO will go directly to the switch. The other side will be connected to the 12V line that comes from the trailers junction box where the 12V line for...

Hi, I was able to check voltage drops. Do these numbers make sense? This was before doing any changes or inspection of the connection points. Top or first number was inverter on, but no load. Second or bottom number is inverter on with microwave (900W) heating water Circled number was...

Hi, The WFCO by design is limited to 30A or 600W. They make different sizes/capacities, my small RV doesn't have a lot of demand. The larger circuits on the AC side is the Air Cond., microwave and heat, which are 20 A. each. (Can't run two at the same time). Everything else is 15A...

Hi, An update. I've realized that when the battery switch (red switch in diagram ) going to the WFCO is off, the smart shunt shunt shows almost no power draw (left below) , which makes sense , but when the battery switch is on, the smart shunt shows 6.03 A /81W and the fan for the...

Hi, Not shown in diagram, but the 12 V black (actually white wires) go to the box shown on the right of the diagram listed as "12V ground bar for 12V systems" which is wired to the neg. bus bar and then to the shunt. So all the 12V loads go to the shunt via the ground bar shown on the diagram.

The fuse is 225A. I will check all the connections and confirm no washer under the lugs.

Ca Can you please provide me the technique to check voltagre drop so I do it correctly.

Just curious why you suggested to run larger than 10 AWG? tks

Hi, I have a new IP22 victron charger. When I plug it in to AC voltage, there are no lights nor 12V on the output. I've checked the fuse and it's good. Any resets or anything else to check or is it defective? Thank you

Got..it may take me a few days..I'm going camping solo next weekend and will have time to check all connectons. The voltage drop just confused me a bit when checking the negative. So you just check the current between two points independant of positive or negative. TY

That's a good thought about keeping a LA battery for the brakes. When I moved my batteries inside when I went with lithium. One thing I hated when they were on the tongue was if you turned the battery switch off, it also turned the power to the e-brakes off. So if you mistakenly left your...

tks, I guess I'm not sure what a Safety hub is...I have a WFCO power center/converter in my small RV. It has 110 circuits and 12V circuits going to and from it. I have a switch in between it and my batteries, but only running 10 AWG wire. I do have 2/0 wire between the batteries and my...

@Pappion Good points. So I would tie in the 10AWG wire (to the bus bar) on the output side of the Class T, but before the inverter switch? TY

Hi, Would it be possible to have the output wire (with a SAE plug) from the DC-DC charger pluged into the external solar plug which is wired directly to the batteries? I have moved my Li batteries inside my small RV and looking to avoid drilling a hole in the floor to get the DC-DC...

Hi, I have almost an indentical set up. How do you plan to connect the charger to the transfer switch? Cut off plug and connect directly to charger or wire in a female plug to the transfer switch and plug the charger? What brand charger Also if yiu disconnect the charger/converter...

My controller only has this. It does not seem to have KWh.

tks...I'm a bit fuzzy what you mean by "Green should be moved" You mean replace all the blade type fuses?

@Pappion I did what you say...but I have a 30 amp charger tied into the positive bus bar (not shown on my drawing). It blew the fuse..although I only had a 20 amp fuse in the short wire. In order to use 30 amp. do I just need to upgrade the short wire (and fuse) I moved to say 8 or 6...

Hi, Tks for the reply. Here is the answers to your questions per my calcs using formulas found on this site. But let me know if I did it wrong (first time), 185 amp; max continous (2222/12) 2222 max power (2000W/0.9) So you are saying the 6 ga wire should be 2/0? What about the connection...

tks..The fuse holder shown between the SAE plug and the bus bar is actually right at the plug. Would a fuse be required between the SAE plug and the charger? Is that what you are saying?

Hi, Does anyone have experience buying/using Lion UT 1300 factory recertied batteries? Thank you

No it's not. The converter/charger is wired in the transfer switch to a contact to only be powered when on shore power. So the converter/charger will continue to run (with fan) because it can not get to the float votage for Li batteries? (It's a converter/charger for lead acid batteries, I...

Hi, A DC to DC charger is used to be able to charge your batteries while on the move. I'm not installing one at his time. I'm using my WFCO and solar to keep them fully charged. I'm moving my batteries from the front of the RV to inside. I needed a way to keep power to my trailer junction...