Voltage sensitive relay

[Anonymous]

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[Anonymous]

[Oily RagParticipant @oilyrag]

Where does the 140 Amps quoted come from? Is it the winch consumption? or is it the fuse box rating? Do you not want the interior light to work when the engine is not running? I can understand the fan not being required when engine 'off' but I would have thought the interior light would ideally be switchable at all times.

I also do not understand exactly what you mean by a voltage sensitive relay! Do you really mean the AWL relay (Alternator Warning Light)? Or do you mean a dual charging relay as used with caravans, which only charges the accessory battery when the main vehicle battery is consuming less than 13.2V?

A brief sketch of the circuits to be employed would be helpful as well.

Martin

[noel shelleyParticipant @noelshelley55608]

Voltage sensitive relay 140A maximum current rating ? Why only using fan or light when engine running ? Do you have other electrical problems ? Why not run fan and light from the ignition switch run position or if you feel the need for a relay wire this through the run position then to a small fuse box. It seems alot of work and technology for no useful gain. Please explain what you need and why ? Noel

[Anonymous]

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[Anonymous]

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[Anonymous]

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[Oily RagParticipant @oilyrag]

The problem may be that the voltage will need to be below 13.2V before the relay triggers for the fan and interior light circuit. The dual charging relays are designed to prioritise the vehicle battery over and above the accessory battery. So on initial start in winter the alternator will supply the main vehicle battery at, say, 14V if the cranking has drained the battery and it will not start to supply voltage to the auxilliary circuit until the battery is sufficiently charged and is only drawing 13.2V. EDIT : just noticed the charge parameters are 13.3V to 12.65V

As Noel says – just link it to IGN pos2

Martin

Edited By Oily Rag on 07/10/2021 17:58:53

[Robert Atkinson 2Participant @robertatkinson2]

You can feed the new fusebox from the AUX battery terminal on the VSR. You should fit a fuse rated to protect whatever size of cable you are using to feed the fuse box at the VSR end. Otherwie if the cable chafes it will cause a fire.

Robert G8RPI.

[Anonymous]

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