50amp 6/3 or 6/4 wire from shore-power to panel

[herman]

I am planning to add an inverter/charger to my 2020 Reflection 303RLS in the future. I am leaning towards a Magnum MSH3012RV because it's my understanding the inverter will use both L1 and L2 whereas the MultiPlus only uses L1 (although I think the new MultiPlus II can do both). Anyway, I was looking around in the basement and I believe I see the shore-power cable and notice the jacket says 6/3. I had assumed it would have been 6/4. My panel has both a black L1 and red L2 AC hot lines going into the left and right side of the panel respectively. Does the cable really have all four conducters (black, red, white, green)? Maybe I don't properly understand 6/3 versus 6/4.

Jeff

[ThePowells]

Welcome to the forum! It has 4 connectors, red, black, green, and white. One of the electrical engineers will be by to explain this later, fore I have no clue.

[Jlawles2]

herman I'll have to look at the wiring in my 303. From what I remember wiring is labeled by the number of conductors and size negating the ground. so 6/4 would be 4 conductors #6 in size usually with a ground that may be a different size. 6/3 would be 3 conductors #6 in size usually with a ground that may be a different size.

[ncitro]

I am planning to add an inverter/charger to my 2020 Reflection 303RLS in the future. I am leaning towards a Magnum MSH3012RV because it's my understanding the inverter will use both L1 and L2 whereas the MultiPlus only uses L1 (although I think the new MultiPlus II can do both). Anyway, I was looking around in the basement and I believe I see the shore-power cable and notice the jacket says 6/3. I had assumed it would have been 6/4. My panel has both a black L1 and red L2 AC hot lines going into the left and right side of the panel respectively. Does the cable really have all four conducters (black, red, white, green)? Maybe I don't properly understand 6/3 versus 6/4.

Jeff

They don’t count the uninsulated conductors. Since the factory cabling is romex, the ground is bare, so it’s designated 6/3. If you want to use SO cable to tie in the inverter (which most of us do as it’s more flexible and easier to work with) all the conductors are insulated and it’s designated 6/4. Whatever you use you’ll need four 6AWG conductors.

[TedS]

It would be called 6/3 with ground, 4 wires.