Double the electrics. (1 Viewer)

[Xoxoc]

Hi,

If I have 7 amp hookup can I connect my camper to two ehu connections instead of one and get 14 amps?

If so, is it as easy as using a splitter (see pic) in reverse?

Thanks
Bryan

 

[slobadoberbob]

interesting argument

Hi,

If I have 7 amp hookup can I connect my camper to two ehu connections instead of one and get 14 amps?

If so, is it as easy as using a splitter (see pic) in reverse?

Thanks
Bryan

OK, we must have an expert that can solve this one..makes for an iteresting argument.. who gets what at what amps?:Blush:

Bob:thumb:

 

[Dodgey]

I know the yanks do this, you can buy the widgets to achieve

I know if we turned all we have on we could exceed 7 amp, but why would we/you?

Just curious?

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[slobadoberbob]

like sticking your finger in

I know the yanks do this, you can buy the widgets to achieve

I know if we turned all we have on we could exceed 7 amp, but why would we/you?

Just curious?

Simon, Just like sticking your finger into the elctric fly swat to see if it works?:Blush:

Bob

 

[scotjimland]

Site EHU supplies are run in three phases + neutral .. one phase per socket .

it would work if both on the same phase but as you don't know this .. it's a big NO .. do not do this

 

[Dodgey]

Simon, Just like sticking your finger into the elctric fly swat to see if it works?:Blush:

Bob

Thought about it, but not daft enough to try, now lets see how many admit to it

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[Geo]

During a recent electrical safety inspection and certification carried out by my oldest boy Simon. at Newark one of these systems was found on a RV It was pointed out that
Although unlikely, it is possible to pick up two different phases
and input 480Volts using this method
Go for it brian your electrical problems will be overoh:
Geo
Make my day
Ask yourself Punk!!!
Do you feel lucky

 

[Terry]

Hi Bryan, I could well be talking b-----ks here but most UK camp-sites are 10 OR 16 amps so why is your van limited to 7 ? Does it trip above 7 ? If that is the case then fit a bigger trip.
terry

 

[Geo]

No Bryan is just greedy he knows there is 48 amps out there on a 16 amp site and he's proberly already working on a "relay" powerd self circulating power input that will suck 16 amps off each phase in turnoh:
Geo

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[Terry]

or his new lappy takes more power than he thought
terry

 

[scotjimland]

or his new lappy takes more power than he thought
terry

or planning an extra special Christmas display, the glowing RV .....

 

[GJH]

Simon, Just like sticking your finger into the elctric fly swat to see if it works?:Blush:

Bob

Thought about it, but not daft enough to try, now lets see how many admit to it

I'm sure Haganap will tell us how enjoyable it is at Lincoln

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[Xoxoc]

Hi Bryan, I could well be talking b-----ks here but most UK camp-sites are 10 OR 16 amps so why is your van limited to 7 ? Does it trip above 7 ? If that is the case then fit a bigger trip.
terry

Hi Terry,

Van is not limited to 7 amp, just asking the question; same question could have been worded 2 x 16 amps to get 32 amps but I wanted to take the cable used out of the equation.


Bryan

 

[Xoxoc]

Thanks for all the quick replies.

The consensus seems to be a resounding NO! due to phases or something...That I know nothing about oh:

So given that MY way is not so clever, is there a way to do it at all?

Thanks

Bryan

 

[hilldweller]

So given that MY way is not so clever, is there a way to do it at all?

Thanks

Bryan

Not if Jim's right and there is a risk of more than one phase.

If you tested for single phase ( 0V from live to live ) then you could in theory split your wiring into two semi-equal loads and have two hook-ups, you'd use a splitter if you found a single 16A supply.

Hmmm. Talking theoretical, there is a way with 2 phases. Two BIG chargers, one off each phase and you run everything of a whopping inverter. This would work with single or two phases. Might be able to squeeze a relay in there somewhere. There might be a voltage issue because all of a sudden you are in command of a 390/415V system. Different regs ?

See if you can find one 12V 150A and one 12V 300A charger before you get too excited. And a 3 or 4kW inverter and some very thick wire.

Can NASA copy with 300A ?

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[Terry]

Thanks for all the quick replies.

The consensus seems to be a resounding NO! due to phases or something...That I know nothing about oh:

So given that MY way is not so clever, is there a way to do it at all?

Thanks

Bryan

Lost me Bryan I suppose you could wire the left side of the van to work off one hook up and the right off tother
terry

 

[tofo]

and convice the neighbouring pitch its their lead

 

[Simannjo]

Connecting 2 leads to different outlets would double the amount of current avaliable...
BUT...

As has been mentioned, the possibility of one socket/lead being on one phase and the other socket/lead on another phase is possible and not advisable... Here's why...

As a rough (but reasonable) guess you would have 415V between the lives of each cable... The common connection being the RV or connector/adapter and in effect a dead short on a 3 phase circuit.
The PFC (Prospective Fault Current) on a 3 phase installation is very likey to be a MINIMUM of 2500 amps and probably higher... All through a 2.5mm Hook-up cable designed to carry a max 27amps...

Be nice to watch though!

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[Ash]

Hi,

If I have 7 amp hookup can I connect my camper to two ehu connections instead of one and get 14 amps?

If so, is it as easy as using a splitter (see pic) in reverse?

Thanks
Bryan

Be careful mate , we were in Spain with friends 2 yrs ago and he did that , there was an all mighty bang and he had blew the electrics up on site oh:oh:

 

[scotjimland]

The PFC (Prospective Fault Current) on a 3 phase installation is very likey to be a MINIMUM of 2500 amps and probably higher... All through a 2.5mm Hook-up cable designed to carry a max 27amps...

Be nice to watch though!

One or both of the outlet's MCBs would trip first...

 

[Simannjo]

One or both of the outlet's MCBs would trip first...

No doubt... (Drama ruined!)
But when the source of the short is either in the hand - the plug or the switch - It's still gonna make a bang as it's still gonna be 2.5 Kva!

Even if it is only for a micro second.

The cable might survive, but I don't think my heart would!!!

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[Snowbird]

Does Suzy know about this idea of yours?????

 

[aba]

hi brian
the only way to do this safely is to plug 1 hook up lead into the vans input socket
then connect the second hook up to 1 of those blue socket to 13 amp adapters and use a 4 way socket to power the other things.
that way the 2 separate phases remain separate.

when i was working as a sound engineer we had a lighting guy decided he wanted a 63amp single phase socket in his unit so he opened the mains box that had 3 phase mains got a socket and wired the live on the socket to all 3 lives in the box he then wired neutral to neutral and earth to earth to make the completed socket when he switched the power back on it took out the area sub station and blew a hole in the unit wall quite spectacular to see but he wasn't flavour of the month with the electric company and he earned the nick name shadow for his efforts.:thumb::thumb:

andy.

 

[welsh winger]

Dont fancy having 415volts in my van, it hurts, as a sparky I read this thread in horror, If just one person gets the wrong end of the stick, or in this case a wire, there will be a death.

Nick

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[pappajohn]

short answer Bryan....no.

the breakers in the post are designed to pass no more than 7amps no matter how many 'supplies' you have to one input socket.

all that would achieve is the possiblility you will trip one breaker before the other due to minor intolerances in the breakers due to age differences.

 

[Xoxoc]

and he earned the nick name shadow for his efforts.:thumb::thumb:

andy.

Love it, Shadow

Does Suzy know about this idea of yours?????

...erm, of course?





Okay, it sounds that it IS possible if the two hookup sockets are on the same phase...


so....

...is there an easy way to check if two sockets are on the same phase or different phases?


yours hopefully,

Bryan 'Kaboom' Admin

 

[scotjimland]

hi brian
the only way to do this safely is to plug 1 hook up lead into the vans input socket
then connect the second hook up to 1 of those blue socket to 13 amp adapters and use a 4 way socket to power the other things.
that way the 2 separate phases remain separate.

please please do not do this.. this is really bad advice .. having two phases in a van is highly dangerous ..

I wouldn't give medical or legal advice ..if your not qualified please don't give electrical advice..

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[pappajohn]

Love it, Shadow




...erm, of course?





Okay, it sounds that it IS possible if the two hookup sockets are on the same phase...


so....

...is there an easy way to check if two sockets are on the same phase or different phases?


yours hopefully,

Bryan 'Kaboom' Admin

this is were the site owner gets upset......oh:

dismantle the post.....

look at the wiring to the outlets....

2 or more linked by a common 'live' wire will be on the same phase....

one wire, one outlet...one of three phases to that outlet only.

just run your genny you tight ****....that'll give you 40amps+

 

[welsh winger]

Excuse the pun but this thread should have its plug pulled, 415 volts in a tin can is deadly.

Nick

 

[aba]

the safest way is to keep the 2 hookups separate from each other.
you can test to see if the outlets are on the same phase by using a suitable multimeter
although it is most likely that if a post has 3 outlets they will be on separate phases.

andy

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