Automatic Inverter Switching (1 Viewer)

Jul 18, 2009
7,786
10,675
Javea, Spain/Manchester UK
Funster No
7,543
MH
HYMER B644
Exp
2004
Thought this may help others considering a similar task.

Posted on other forums by me.

Managed to get around to rewiring the motorhome today. Fed up of extension leads from the cheap/Basic dealer install.

If it is of any interest to anyone considering the same, here are a couple of photos....

As we had a CBE consumer unit, this did not facilitate the installation of my type of automatic switch over. So it was removed and an MK Sentry 8 way fitted. We only needed 2 or 3 Fuses, so this made room for the contactor. Saved having an additional box.

As the MK Sentry is made for Domestic use, there is the possibility that screws could loosen with vibration (happens in homes too but more likely in vehicles). So I used boot lace ferrules and a combination of blue thread sealant and glue to prevent screws turning.

Just a bit of tidying up to do.

TM
 

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OP
EuroTrotters
Jul 18, 2009
7,786
10,675
Javea, Spain/Manchester UK
Funster No
7,543
MH
HYMER B644
Exp
2004
Morning,

I about to carry out a new installation on or Hymer, this time using Techno's relay version.

If you never hear from me again, I was fried during the set-up.

TM
 

eddievanbitz

Trader - Funster
LIFE MEMBER
Oct 4, 2007
7,378
32,741
Taunton Somerset
Funster No
540
MH
RV
Exp
since 1989
The inverter output from the relay will go through the RCD on the consumer unit.
It can't unless you wish the whole 220vac circuit to be running off of the inverter, also your inverter would be potentially live even with the RCD "tripped"

You will need an RCD on the incoming main (supply) and on the invertered 220 vac output from the inverter
 
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