Each piece has a positive, and negative sign, so you can not go wrong
Each of the two pieces which make up a full plug, will only fit one way, and will fit any other 50 amp Anderson type plugs
There are also 50 amp Red Anderson type plugs
The red ones will not fit the grey ones, (that is why they are different colours)
I use grey for normal stuff, but red ones from my portable solar panel, when bypassing the regulator, as 22.5 volts come out, which will fry a lot of 12 volt stuff I would not want to accidentally plug a solar panel without a regulator direct to the battery by mistake I have made up a very short lead with a red Anderson on one end, and a grey one on the other end, this saves me carrying two Anderson type extension leads
I also do not crimp my Anderson connections, I drilled a hole in a piece of wood, sit the connector in upright, fill it with solder, using a small hot devil type gas gun, and then push the wire in This way I can always reuse the connectors, by using the gas gun, to heat the solder
Hope that this is helpful
Edit to say
The other day I decided to clean a grey Anderson plug terminal, which I have connected to my battery, via fuse I used electrical contact cleaner, opps that was wrong, the Anderson type plug softened before my eyes, and drooped down, then some of the plastic fell to the ground
-- Edited by Tony Bev on Saturday 13th of October 2018 11:06:53 PM
There are colour coded Anderson plugs as Tony has mentioned, the standard grey, red and blue. The colours will only fit with another plug the same colour, so if you have circuits that would be damaged if the wrong thing was plugged into it then you need to use the colour coded method.
Always make sure you are buying genuine Anderson plugs and not Anderson type plugs, the difference is chalk and cheese yet the price is similar .... except for the coloured ones, they can get a bit pricey.
T1 Terry
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