Using both the CTEK 120S and the 250SE together
This post summerises key information from
this CTEK instructional video. It is not a substitute for watching the video. It merely summerises key information to help an install.
Fuses
Two 300 amp fuses are needed (but one or both may already be installed on your INEOS).
One 300 amp between the Start Battery (aka main battery) and the CTEK 120S SMARTPASS. I believe this is done via a battery fuse on one of the INEOS busbars, known as a
MEGA range ZCASE® fuse.
A second 300 amp fuse between the CTEK 120S and the Serve Battery (aka auxiliary battery). If you have selected the INEOS aux power pack INEOS uses an inline MEGA fuse in the Midi style (which are
not MEGA range ZCASE fuses). I believe, but cannot be certain,
this is the Littelfuse fuse holder used in the INEOS.
Warning: you must look at your car’s set up is before doing work, because set ups may vary between countries and models. Do not make assumptions! You may already have one or both fuses already installed.
Fuses used and cable length
Page 5 of the CTEK Manual lists the fuse ratings and cable requirements for your install. Cable size can vary depending on the length of a cable run. What cables to use may vary between the CTEK 250SE and 120S
. The CTEK supplied Table tells you both, use it.
More fuse information
This thread has more detailed information on the fuses used in the INEOS.
Terminal screws/nuts on units
Use an Allen Key on the terminal screws (nuts) and tighten to 7 N-m of torque (Newton meters). Tightening by hand is not good enough.
Solar panel for the CTEK 250SE
The CTEK 250SE charger is designed for solar panels:
- between 50 and 300 watts;
- with a maximum open circuit output value of 23 volts;
- using a 6mm cable from the solar panel to the charger.
Use an M8 ring terminal/lug (I suggest a tin-plated copper lug) crimped to the solar panel cable and attach the cables to the solar input on the CTEK 250SE. Tighten to 7 N-m of torque.
View: https://youtu.be/kTRiqyzK9zA