Got an extra slot in my panel and want to add a couple 12v outlets to charge phone, laptop, etc. How do you wire 2 or more things on a circuit? Just use a terminal block? Is it possible to wire from one outlet to the next? They've got spade connectors on the back.
Also, is there a right way or wrong way to do the spade connectors? Do they need to be heat shrinked or anything?
There is NOTHING right about spade connectors on DC panels to begin with.
Sadly we are seemingly stuck with them and numerous arguments by those of us in the industry, to ban them for use on "critical" circuits, have been ignored..
You could not pay me to install a DC panel that used spade/friction fit connectors. I have in fact declined to install them when owner supplied and sent them back for a "quality" panel.. I personally find them to be an unsafe installation practice for anything that is a "critical circuit".
Heck we can't even get "reputable" companies like Blue Sea Systems to stop shipping products with friction fits so we certainly can't expect second, third or fourth tier companies to do any better.
If you want to wire the speaker outputs of a stereo with them, or a cabin light, that is one thing but for most other circuits they tend to cause nothing but issues. They are also usually a ONE TIME connection. Pull them back apart and they rarely if ever meet the min required pull out numbers.
They are my #1 trouble spot connection on a boat other than 3M Scotch Locks & badly done DIY soldering..
For the 12V outlets you can simply parallel wire them at the source or install a bus bar close by. Of course the 12V outlet will usually have one ring terminal and one friction fit which makes parallel wiring with the friction fit dubious at best... I will often drill a hole in the friction fit male ear and use a bolted on ring terminal... Arghhh........
Don't feel bad many current boat builders still ship boats that have DC panels fully wired with friction fit terminals. I spent two days five weeks ago chasing down multiple non-operational circuits on a 2008 six-figure power boat.... Every single issue was a friction fit connector. All this to save a penny...... These penny savings eventually costs the owner tens of thousands of pennies, but I digress....