Wiring sense check before I commit!

CooseVW

Senior Member
VIP Member
T6 Guru
Hi all,

Just a quick sense check before I commit to installing my leisure set up... I'm shooting for pretty minimalist, as it's just for a day van/ slide pod configuration.

The kit:

CTEK D250SE
Renogy 100ah lithium leisure battery
Victon 12v 375VA inverter

Here is a quick mock up of my wiring diagram: (Forgot to draw the earth on the neg side of the fuse box)

IMG_9324.webp

Can anyone spot any terrible errors before I start?


I also have a couple of questions...

1) Where should I fit the fuses on supply cables? I've seen some diagrams with them fused at either end of the same cable... is this not over kill? I figured a 30A fuse on the positive cables as the leave the source would be adequate?

2) Would there be any benefit in installing an isolator between the starter battery and CTEK?

3) Guessing I'm going to need a consumer unit to offer protection on the 3 pin plugs?

4) What gauge cable should I run between the inverter and leisure battery? If my maths is correct, if I was to use all 375w, that would equate to over 31A @ 12VDC.


From the blade fuse box, I'll be running:
USB Charger, 12v Socket and LED lighting so nothing major.

Thanks!
 
My 2 penneth. Unless you’ve already bought it, I wouldn’t be fitting a Ctek charger. Very old tech, no Bluetooth so you’re guessing what’s actually going on, and not that reliable.
 
My 2 penneth. Unless you’ve already bought it, I wouldn’t be fitting a Ctek charger. Very old tech, no Bluetooth so you’re guessing what’s actually going on, and not that reliable.
I inherited it with the van unfortunately... it's the only part of the electrical setup that has remained 😂
 
Fuses at both ends of any cable that has the possibility of current flow in both directions.
I have a CTEK, not the best on the market these days but has been reliable for 8 years. If it works you don’t need to be looking at an app.
Not sure what you are planning to do with such a small inverter? I spend long periods travelling off grid and I’ve managed to get everything I need to operate on 12vDC.
12v Planet have good tutorial and technical content on their website.
 
Fuses at both ends of any cable that has the possibility of current flow in both directions.
I have a CTEK, not the best on the market these days but has been reliable for 8 years. If it works you don’t need to be looking at an app.
Not sure what you are planning to do with such a small inverter? I spend long periods travelling off grid and I’ve managed to get everything I need to operate on 12vDC.
12v Planet have good tutorial and technical content on their website.
That makes good sense regarding the current flow.

To be honest, I do not know... it was a Christmas gift so figured I might as well make use of it. It will fit under the passenger seat so won't take up any space in the back.

Even if I only use it to charge a laptop/ dewalt batteries, it's worth having purely as it's already sat in my garage.
 
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