Red wire or black wire?

[bleggblogg]

On a Crest lithium battery back (the kind used with Aristo onboard train engineer), which wire is positive polarity and which is negative? I know that black is usually positive, but I want to make sure.

Thanks,

 Arthur

[altterrain]

Red is almost always positive in most parts of the world!

Go here for some guidance -

Power Car - 4th Generation
by Paul Norton

 Also invest a few bucks in a multimeter! You can find them as cheap as $4 at HarborFreight. I can't imagine working on electronics without one.

-Brian 

[cabbage]

Ermmmm...

Here in the UK we are somewhat fanatical about colour codes and yes -RED IS POSITIVE. It is also indicative of DC, our AC colour coding is somewhat different to that in the US -as my 16 year old nephew from Walnut Creek found out... After having blown all the circuit breakers in the house so that; he, his brother, and his mother, all sat in the dark for 3 hours -until we got back home. And YES -everyone from the US was told not to touch any electrical wiring or bring any item of electrical equipment with them...

DC Wiring
RED is positive
BLACK is negative
Light BLUE and YELLOW are DC of variable BUT DIFFERENT polarities.

Single phase AC Wiring
GREEN WITH YELLOW STRIPE is the earth connection
BROWN is the line connection
BLUE is the neutral connection

regards

ralph

[bleggblogg]

Not entirely sure how I made that particular mistake. Wow. Anyway.

I apologize for giving the impression that I've never heard of an electron before.

The particular project I'm working on is the G-Scale Graphics basic Critter Control, which is a manual control system for battery locomotives. I've finally got it put together, and it works in a manner most charming.

 

Arthur