Not to be taken as an absolute, but blue cables are often 'Arctic Grade', meaning they remain more flexible at lower temperatures.
A 16A standard 'Orange' cable is like trying to coil an iron bar below about 15C, blue 'Artic Grade' cables should be easy to coil down to around -25C.
The colour alone is not enough to determine type, you need to read the markings on the actual cable to see what spec it is.
Hmm. We’ve never noticed any orange cable “iron bar” tendencies below 15deg. (That’s sometimes Scottish summer weather….) And no problems when the site water taps were frozen solid, one Easter.
The continental MHs seem to favour the blue cable. But most of us just use what our unit comes with.
I have two cables, one orange and one blue, both of the same current rating. In my case the only real difference is that my blue cable is MUCH longer, but that is because it is one I made up myself for my boat. Power points on some marina are much further away than is typical on most campsites. The orange one came with the caravan, and I haven't notice any difference in the stiffness between the two. However, I don't generally go caravanning in the depths of winter. I have seen frost on the ground when on a site in early spring though and my orange cable was fine.
I didn't know there was a difference actually. When I purchased both my two cables back in 2005 I purchased a 10 metre blue one and a 25 metre orange one which was deliberate as I could identify immediately which one was which.
I didn't think there was any difference in the colours. Mine is white because I made it myself and white 2.5mm 20 amp cable is what I had lying around.
There is a considerable difference in cables, the regs specify a certain type.
PVC cables aren't all the same, normal PVC can become brittle and crack in cold weather and is designed for use indoors!
saxo1
The color is entirely cosmetic. There may be valid reasons for choosing particular colors:
Orange, yellow, and fluorescent colors are favored by the construction industry for improved visibility. This helps to reduce tripping.
Dark green cords are useful for temporary lighting in landscaping: the color is less obtrusive, blending in with foliage.
Black cords are preferred for audio and video production because they are not very reflective, and are less noticeable by the audience of stage productions.
The carbon black pigment gives black cords extra resistance to ultraviolet degradation. Black is sometimes chosen where a cord is continuously or frequently exposed to sunlight.
White cords are often used with festoon lighting, where it must blend in with draperies.
Yellow and BLue are used in the construction industry to identify the different voltages, Yellow is 110V and Blue is 230v,Black is often rubber insulated and are used in harsh environments as it is flexible at low temperatures.
saxo1