burned wires..

[badboy2]

i was finally done on my sav conversion..i extended the evx esc wire for the batts with 3inches 12gauge wire..i connected the 1st pack and everything was good,the 2nd one as soon as i connected the deans plugs the wires went on fire as i panicked i burnt my fingers from pulling the plugs off..i made sure that the red and black are in the correct place..what will make this happen the wire that got burned was the battery wire..this wires arent connected permanently on the batts..they have this connector that connects to the tabs soldered on the batt ,so the batt was safe..the esc wire was not burnt either..only the wire connector which is 14awg im guessing thats 14gauge..what can cause this? if its the wire size it should have happened to the 1st one i connected and the evx isnt on too..can u pls help me?any suggestions..thanks
http://img429.imageshack.us/img429/44/dsc022659zt.jpg

[bensb4]

it shoouldnt be the wire size difference.my esc has 14awg and my batts have 13.if i wrongbut are those yellow and blue things on theother end of the wires those wire tabs you just snap to another wire for an extension?if so thats your problem right there.

you used a even more resistanced connection that cause even more heat because its ineficient.if you wanted a extension you should have soldered it then shrink wrapped it.

then again its know the evx totaly blows

[jacteh]

Burnt wires indicates too much heat in the wires (duh). Heat in the wires can be calculated using the simple power equation P=I^2R. Obviously R is going to be REALLY low so the problem was a huge current draw.

Also, the problem is not the connectors. Any resistances they have will result in power lost (ie heat) at the connectors. There is no way connector resistances will cause wire further down to burn its insulation.

Looks like something has shorted to me, possibly in that T connector, seeing as the ESC side of things was safe. Get out a multimeter and put one probe in each of the connector terminals and measure the resistance between them. I'm betting you'll get something close to 0 instead of something close to infinite.

[badboy2]

well as ive searched and ask other people in other forums i discovered that i made a stupid mistake..when i connected my esc wires to the deans plugs i switched the red wires in different connectors..its like wire #1 should be paired with wire #6 or something like that..but since i know everything i was so curiuos why wire #1 is paired with wire #4 when # 3 is closer so what i did is i changed them..ah i just wanna bang my head againts the wall.

[baih]

i do notice you used different colored connectors for your extensions. you might also want to consider using a female and male on one side so that you dont cross those wires. better yet just use deans or make the joints with soldered connections.
when i tell people to change to deans connectors on a evx, i tell them to do one set of connections at a time. battery and motor. your not the first one to do that. i think on the traxxas website there is a wiring diagram for the evx.

[Jeckler]

http://www.traxxas.com/products/electric/emaxx/blueprints/010613_evxaddm.pdf

[kschauwe]

Yes, when you switch the two red or two black wires on the battery input, you will create a direct short on one of the battery connections.

[badboy2]

thanks guys,man y even think of switchin them?do u think my evx is still good?i never tried it yet..im actually afraid to do it that i might burn it again..