Cutting shore power wires to add plug for battery bank

[mojo43]

Hello, I have a trailer with a shore power inlet. I would like to be able switch between shore power and a Bluetti AC200 Max for AC power. I was thinking of cutting the wires after the shore power inlet and the fuse box and adding a female plug on the shore power side and a male plug into the one that goes into the fuse box. This way I could plug my Bluetti into the fuse box to supply power when I need it. This would all be done in the trailer. Do I need to add a box? These are the plugs I was intending to use.

https://www.amazon.ca/dp/B0868Q5YB1?psc=1&ref=ppx_yo2ov_dt_b_product_details

Thanks in advance!

 

[time2roll]

When you cut the wire from the inlet to the panel.... the proper thing to do is install a transfer switch. Add a second inlet to the Bluetti.

Of course if the Bluetti can sit outside, a simple adapter from Amazon works fine. Bluetti goes direct to the existing inlet.

 

[mojo43]

Thanks for the reply. What could happen if I just put the plug in? Also could you point me in the right direction for a transfer switch? I did a quick Google search but it seems like all the transfer switches are pretty massive. This is something that would have to fit in a very small place since the trailer is tiny.

 

[time2roll]

What do you mean by just plug it in? Plug what to what with what?

Here are a few transfer switches: https://www.bestconverter.com/30-Amp-Transfer-Switches_c_182.html
Yes they are a bit bulky.

 

[time2roll]

If you want to switch manually so to speak and use the amazon plugs inside a compartment that is fine.
Attach a male plug to the main feed wire to the panel and a female connector to the other side that connects to the inlet.
Attach a second female connector to a cord that plugs into the Bluetti.

 

[marionw]

Just make sure you do not have a "Male" (read prongs exposed) plug/connection that has any power applied whether from the breaker box or a source.

Depending on what you can do with the trailer fuse box you could add a second "input" breaker for the "Bluetti AC200" that is interlocked with the "Shore Power Breaker" such than only one breaker can be closed.

 

[mojo43]

Thank you for all the responses! Just to clarify... "Inside a compartment" means in the trailer itself? Just wanted to make sure it wasn't an electronic compartment of some kind?

 

[time2roll]

Under the sink, behind the fridge, in with the water pump etc is all good.

 

[HighTechLab]

Y'all are scary.

Please do note that this forum is not a substitute for a licensed electrician. You are responsible for verifying the accuracy of advise given, and verifying that it meets the applicable codes and requirements for your jurisdiction.