please can somebody help me to find chart shows multi core cable ampacity, i am talking about 3,4 core cables sized in mm. i am talking about all sizes of cables 1.5, 2.5, 4, 6 mm...etc, if possible?
You can find all these cables data's in the cable catalog from the cable suppliers or the cable manufacture. They always provide full details of all these cables.
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check previous threads at least in 2 threads there are links to this aspect.
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Fantastic ideas for a Fantastic World, I make the illogical logical.They put me in cars,they put me in yer tv.They put me in stereos and those little radios you stick in your ears.They even put me in watches, they have teeny gremlins for your watches
Hi Not to confuse at all, but there is more to just looking up on a table for the current carrying capacity of a cable. in any chart you look up there will be some standard specifications linked to the value. IE, depth of cable, or on a rack or in the air or in a duct, How many cables run together, insulation type - PVC or Pex, length of cable, voltage applied, volt drop depending on length and current it will carry, diversity factor, if in groung what is the soil resistivity, sand, clay, gravel. temperature of cable under operating conditions and many more factors. All these factors mentioned will have a derating factor to be applied to the nominal current carry capacity of a cable. If it is to supply a motor, then you will have high starting currents which impact volt drop. One must also considor the length and the loop impeadance for the size of the eart continuity conductor you use. Then there is the deciding factor of the protection type that you will apply. not withsatnding the current capacity of a cable under nominal conditions one must aslo condidor the implactions of the prospective short circuit current that will occur under a fault/abnormal condition. There will be a sigbificat temperature rise in the conductor depending on the operation speed of your protection. Some times you have to go to a bigger cable for example your load might be 20 amps so a 2.5mm cable will hanled that, but when you apply all the above factors and subsequent derating factors you might find that you have to use a 4mm or even a 6mm cable.
I have devised a software package for every concievable cable size and type which caters for all this, you can contact me at billsparky@gmail.com and I can share much more detail with you.
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cable ampacity
Re: cable ampacity
