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Ayrshirelandy

Member Since: 28 Mar 2015
Location: Ayrshire
Posts: 140

Inverter in rear

I am thinking of installing a high power inverter in the rear of my 110 Utility. I was wondering if anybody has done this and any tips. I want to run a fridge and some other things so thinking of 12V Modified Sinewave 1000W Inverter from Maplin. I would want to hard wire this as the use the accessory socket would not be wise.

I would appreciate any input or working diagram.

Thanks 2015 Defender 110 XS Utility Santorini Black, sawtooth alloys, steps and so much more...........

1st Dec 2015 9:42pm

Laurie

Member Since: 22 Feb 2008
Location: Sussex, England
Posts: 2897

2005 Defender 90 Td5 XS CSW Bonatti Grey

Hard wire it either from the battery terminal or the input side of the starter solenoid.

1st Dec 2015 11:58pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20447

Direct from battery using a VSR I would say, possibly an isolator switch too.

2nd Dec 2015 12:21am

leeds

Member Since: 28 Dec 2009
Location: West Yorkshire
Posts: 8582

Re: Inverter in rear

Ayrshirelandy wrote:
I am thinking of installing a high power inverter in the rear of my 110 Utility. ..... I want to run a fridge and some other things so thinking of 12V Modified Sinewave 1000W Inverter from Maplin.

Thanks

Am not sure of your logic here.

Most 240 volt fridges are not suitable for use in a 4x4. A standard 4x4 12 volt fridge can take the vehicle movement and cope .

A standard 240 volt fridge normally needs time to 'settle' after periods of movement.

The good quality 4x4 fridges will work on both 12v DC or 240 v AC.

A modified sine wave inverter may well not be suitable for charging items such as laptops which normally require pure sine wave current. A pure sine wave inverter is more expensive then a modified sine wave inverter.

A 1,000 watt inverter would pull at least 80 amps on full load so allow for losses your cabling would need to be able to take 100 amps continuously. Cable size would then be of the order of 16mm2.

Now running that inverter at full power would flatten a standard battery within an hour.

The standard way of running a fridge in a Defender is to use a 4x4 fridge on 12 volts, such as an ARB, Engel,Waeco with a twin battery set up. As an aside the Waeco fridges come out on top of an Australian survey of 4x4 fridges in 2014

If I have misunderstood your aims I apologise but is a critical rethink in order?

Brendan

2nd Dec 2015 8:42am

couplands

Member Since: 31 Aug 2011
Location: Peak District & Cornwall
Posts: 1826

Related question: I have seen various methods of providing protection on the 240v side of the inverter. Is it recommended to put in an RCB and also to earth the truck to real ground via some sort of earthing stake...? Or just leave the 240v floating..?

Cheers

Simon

Ps was going to make the same point about the 240/12v fridge...

2nd Dec 2015 8:59am

Phoenix90

Member Since: 04 Mar 2012
Location: Cornwall
Posts: 377

2007 Defender 110 Puma 2.4 USW Stornoway Grey

As Brendan says, wherever possible much better to get 12V kit rather than inverting

Can get 12V chargers for most things now including laptops etc.

3rd Dec 2015 10:11pm

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