Armortek

Hi
I'm thinking of using a 24v automotive style relay to switch circuits between normal running and a battery charging socket - when the latter is selected it isolates the tank electronics from the charger input.
Although the power supply module has fuses for each of the sub circuit outputs, it has been suggested that I protect everything with a "master fuse" in line between the batteries and the relay. The trouble is, without knowing what current a full options setup draws, I don't know what fuse ought to be used. Is it the sum of the fuses in the PS module? I think I read that they are 2 x 40 amp and 2 x 5 amp, giving 90amps but that feels like a very big fuse.
Anyone experienced in this area please?
Regards
Kevin

Hi Kevin.

You dont need to isolate the power supply to the tank in order to charge up. Just plug in and off you go. We dont fit a master fuse for the very reason you have discussed. Realistically it would need to be 100amp, which is, as you say, a very big fuse.

Mark

Hi Mark

I think we have touched on the charging subject previously, specifically unplugging the tank at the battery connector plug in order to then plug in the supplied charger adaptor.

My logic (if you can call it that )of using the relay is of course to divert the battery connection between tank and charger as required without unplugging and plugging connectors in the bowels of the model. There is an additional safety benefit if the relay is switched with a key type rather than toggle switch, as power to the PSU can be locked "off" in case anyone wants to fiddle inside the hatches etc.

The advice regarding a master fuse came from an engineering club colleague with an electronics background - possibly over zealous in this context? Presumably though there is no reason I cannot run with the relay scenario but excluding said fuse?

As always, thanks for your tolerance

Regards

Kevin