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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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  • Former Community Member
    0 Former Community Member
    Yes you are correct this is a charging circuit. Not fully understanding your post, are you saying all charging wiring needs to be twin sheathed. From the van we have the dealer has used single core cabling for teh charging circuit, this was also the same on the past three vans we have owned all from different dealers.


    Also our battery in the leisure area is under he passenger seat and already has protection device fitted in this area. For the vehicle battery this is under the passenger foot well and has fuses directly attached to the batter. Are you saying you cannot have any protection (fuses or circuit breakers) under the passenger seat. This van does not really have a battery compartment for leisure battery as it is open space under the seat as all van builds are.


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  • Former Community Member
    0 Former Community Member
    Yes you are correct this is a charging circuit. Not fully understanding your post, are you saying all charging wiring needs to be twin sheathed. From the van we have the dealer has used single core cabling for teh charging circuit, this was also the same on the past three vans we have owned all from different dealers.


    Also our battery in the leisure area is under he passenger seat and already has protection device fitted in this area. For the vehicle battery this is under the passenger foot well and has fuses directly attached to the batter. Are you saying you cannot have any protection (fuses or circuit breakers) under the passenger seat. This van does not really have a battery compartment for leisure battery as it is open space under the seat as all van builds are.


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