Palamino Campers
Submitted: Monday, Oct 15, 2007 at 08:46
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Ray
My son has recently purchased a Palamino camper that was imported from the U.S. I has been converted to 240v with the exception of the roof mounted air conditioner. Would anybody know what size of step down transformer would be required to operate this air-con and is it a practical thing to do seing that it is 60hz compared to our 50hz. I would imagine that it would run at only 5/6ths of its design speed and may not be efficient
Reply By: Member - Kiwi Kia - Monday, Oct 15, 2007 at 09:01
Monday, Oct 15, 2007 at 09:01
Be aware that a motor designed to work at 60 Hz MAY not work properly at 50 Hz. It's all to do with the windings and amount of metal in the laminations of the motor windings. Keep an eye on the heat generated inside the motor itself.
How have you converted the camper to 230 V ? The internal wireing probably does not have a 230 V rateing and if so would be illegal for use at 230 V.
AnswerID:
266610
Follow Up By: Julian - Monday, Oct 15, 2007 at 15:09
Monday, Oct 15, 2007 at 15:09
Wiring rated for use at 110v in the US will be heavier than that for 240v because it's the current rating (amps) that's important.
a 1000w appliance would draw approx 4 amps at 240v and 9 amps at 110v. So the original wiring should be more than OK.
Cheers
Jules
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Follow Up By: Member - Kiwi Kia - Monday, Oct 15, 2007 at 16:10
Monday, Oct 15, 2007 at 16:10
Read the post again Jules, I said VOLTAGE rating not current.
Any wiring used to carry 230 volts MUST have a voltage rating of 450 volts or above. If the wiring does not have a minimum voltage rating of 450 volts then it is illegal.
Any recreational vehicle or caravan wired for 230 volts must comply with AS/NZS 3000 and AS/NZS 3001.
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Follow Up By: Julian - Monday, Oct 15, 2007 at 16:24
Monday, Oct 15, 2007 at 16:24
I'm sure you're correct about the legalities and the relevant AS/NZ standards but the fact of the matter is the important criterion by which one should judge whether a particular cable is suitable is the amount of current it has to carry. A good example would be the main cables connected to your car battery. These are very thick due to the current they are required to pass - but still only 12v. My point was that the installed US spec cables would easily be man enough for the task - whether they're legal or not is another matter.
Cheers
Jules
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Follow Up By: _gmd_pps - Monday, Oct 15, 2007 at 19:39
Monday, Oct 15, 2007 at 19:39
why do you insist on rubbish ... this is ludicrous ...
it was said above .. voltage is the point .. and with voltage he means insulation. I happen to have a Palomino slide-on and I have changed the wiring. The US insulation on the wires used is no way even close to 240 specs. The insulation is paper thin and higher voltage can go through that. So please stop splattering rubbsih all over the internet.
Have fun
gmd
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528930
Follow Up By: Julian - Tuesday, Oct 16, 2007 at 09:05
Tuesday, Oct 16, 2007 at 09:05
Not rubbish - just physics. Try to be more polite in a public
forum. We're off the front page now anyway!
Cheers
FollowupID:
529040
Follow Up By: Member - Kiwi Kia - Tuesday, Oct 16, 2007 at 13:23
Tuesday, Oct 16, 2007 at 13:23
Jules,
The insulation on 110V cable is NOT suitable for 230 V operation.
I will not go into all the tech details but the regulations were made for sound tech reasons.
Electrical Inspector !
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Follow Up By: Julian - Tuesday, Oct 16, 2007 at 13:27
Tuesday, Oct 16, 2007 at 13:27
I stand corrected!
Cheers
Jules
FollowupID:
529108
Reply By: Member No 1- Monday, Oct 15, 2007 at 09:11
Monday, Oct 15, 2007 at 09:11
I take it that the aircon is an evap cooler?....it will be heavy transformer....if ita a refrigerated type it gunna be a HEAVY trany
60 hz means things run fasetr than our 50hz stuff
just expect a 17% reduction in capacity
my advice would be to rip it off
AnswerID:
266611