Wiring inquiry for 12V receptacles

[TheOtherLine]

I want to install 2, 12V receptacles in the cabin. However, I would prefer to connect BOTH of them to ONE available accessory switch. Is there any reason I can't/shouldn't do that?

I am planning on connecting the two black wires and butting them to a single black lead that I can then connect to the available accessory panel. Same idea for the red wires.

Any tips appreciated.

 

[DaleH]

You'd just need to make sure that the fuse or breaker powering BOTH of those items is LESS than the total ampactity rating for the individual wire going to one of the items.

This will make sure the fuse or breaker trips/disconnects before a single-wire itself could burn up. What length runs are you imagining?

I never use wire less than 16 AWG anyway and that should be fine, just size the circuit protection accordingly. If you give more details, I can help. Or PM me, I have a Boat Electrical Wiring 101 DIY article that is in draft form that might help you too.

 

[TheOtherLine]

What length runs are you imagining?

I am putting both of them in the cabin of a 2520, right next to the seat posts. I figure about 12' for the port side and about 4-6' for the stbd side.

 

[TheOtherLine]

You'd just need to make sure that the fuse or breaker powering BOTH of those items is LESS than the total ampactity rating for the individual wire going to one of the items.

So, if the accessory panel is a 10 amp switch, then the ampacity for each of the four wires coming from the items must be at least 3 amps?? :?

I will PM you for the wiring 101 draft.

Thanks