Hi i'm doing the same job, got my cables from ( thecableguy) on ebay, or phone Gareth on 07825 812484 made to size and with connections in place BAZ.Anyone know where I can buy 35mm square copper cable? I'm installing a Sterling B2B charger and need to run a cable from the vb to the lb. I've phoned a dozen placed and no-one seems to sell it.
Does it need to be 35mm, as that seems quite heavy duty? Is it a long cable run? What size alternator is charging your VB?
Used 35mm Sq. Tri-Rated from Express Electrical service quite good, but why 35mm?
Someone from Roadpro said to use 35mm2, however I've just spoken to Sterling and they said I could use 16mm for a short distance or 25mm2 if over 3 metres. So not sure which to use. Techno100 said he used 25mm2.
Does anyone have a link for where I can buy 25mm+sq flexible copper cable? Thanks
Just had a look at the sterling cable sizing charts for these and they seem very onerous, ie:- 50mm2 for up to 180amps at 0-1.5m. 50mm is good for 340amps.
Based on what you've said i'm assuming that yours is the 50amp model, if so, even 25mm2 seems quite hefty as it is good for 170amps.
I'm assuming that there may be a sensitivity of the unit to voltage drop along the cable, but even so this seems a little steep.
Can anyone shed any light on this?
25mm will be more than enough for most installations, I use cable from VWP in the previous link, ref 196 which is 196/0.40 cable. 196 strands. My max load from the leisure batts will be about 25A, max feed current 50A.
The large cables ensure minimal volt drop, the cost saving from 25mm to 16mm is negligible especially on short runs. If using large inverters then the larger cables are a good idea.
I'm not using inverters so will 16mm be adequate? I'm fitting the 45amp B2B charger from Sterling
use some old jump leads ?