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Quote: Originally posted by sharky 2728 on 13/6/2009

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having your rcd on might have caused it as when you plug in your 240 it will surge the system or you've got a loose wire somewere on the 12v side

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You don't get "surges" as such...they're for lightning strikes! But I know where you're coming from!

All's that happened is the fuse has possibly blown due to starting current from the fridge motor creating induced back voltages, It would probably be a one-off, but if it keeps recurring then to be double sure have your wiring checked and tested by a professional.

Noticed your location is Sunny Swad by the way.....me too!

Quote: Originally posted by nuttyboy on 14/6/2009

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Quote: Originally posted by sharky 2728 on 13/6/2009

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having your rcd on might have caused it as when you plug in your 240 it will surge the system or you've got a loose wire somewere on the 12v side

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You don't get "surges" as such...they're for lightning strikes! But I know where you're coming from!

All's that happened is the fuse has possibly blown due to starting current from the fridge motor creating induced back voltages, It would probably be a one-off, but if it keeps recurring then to be double sure have your wiring checked and tested by a professional.

Noticed your location is Sunny Swad by the way.....me too!

 

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3 Way fridges don't have motors.

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Would this cause the blown fuse.......

While connected to the electric we connected van to car...never done it before, the ATC kicked in as normal. When we got home 12 v fuse had blown

And yes its sunny in swad nuttyboy 

Hmmm not sure exactly what could have caused that to blow.......... I wonder if by doing what you did the 240v has backfed thru the 12v system? (Wonder if that's what DaleR meant by "surging"?) Try doing what you did again and see if it blows the 12v fuse. If so then that's probably what's doing it. If not then have your wiring checked out. 

Yeah I'm in sunny Swad too - well, Midway!

Quote: Originally posted by nuttyboy on 15/6/2009

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Hmmm not sure exactly what could have caused that to blow.......... I wonder if by doing what you did the 240v has backfed thru the 12v system? (Wonder if that's what DaleR meant by "surging"?) Try doing what you did again and see if it blows the 12v fuse. If so then that's probably what's doing it. If not then have your wiring checked out. 

Yeah I'm in sunny Swad too - well, Midway!

On the car or caravan???

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The golden rule with fuses is, if it blows change it, if it blows again there is a fault. This is because fuses are known to age and become less tolerant of higher end current flow.

If you have an rcd type device and it trips then you have a fault as they are not susceptable to ageing like fuses.

Quote: Originally posted by Claire1965 on 15/6/2009

On the car or caravan???

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On the caravan!