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Cable current rating advice

Former Community Member
Former Community Member
Hi all, I would like to verify something with respect to current carrying capacity of cable. Specifically vehicle single core DC circuits.


Looking at 16mm wire not worrying about voltage drop. manufacturers are ratting this at 110A and on a forum I subscribe to people have been advised 125A is ok.


The cable is rated at 70 deg as shown on the suppliers site linked below.

16mm supplier


Am I wright that this comes under 

Table 4D1A


Single-core 70°C Thermoplastic Insulated Cables, Non-Armoured, with or without Sheath


Reference Method C (clipped direct) This will be between battery to battery not in any conduit or insulation


So is rated as 87A


I would be interested in your advice as it has been several years since I used these tables
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    As Mike says you can look at current ratings in many ways and under many different conditions. We make battery cables with crosslinked insulations which allows conductor temperatures up to 150°C or more so under the right circumsatnces a 16mm2 cable in free air will carry 222A for 3000hrs. By the time this is derated due to ambient conditions and grouping this will probably realisticaly be ~150A. The information starts on page 56.

    HUBER+SUHNER Transportation—Page 56
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  • 0
    As Mike says you can look at current ratings in many ways and under many different conditions. We make battery cables with crosslinked insulations which allows conductor temperatures up to 150°C or more so under the right circumsatnces a 16mm2 cable in free air will carry 222A for 3000hrs. By the time this is derated due to ambient conditions and grouping this will probably realisticaly be ~150A. The information starts on page 56.

    HUBER+SUHNER Transportation—Page 56
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