I have been advised that these are actually autotransformers and are potentially dangerous for using in a 230-240v environment. Can anyone clarify?
1501886
When I opened one up the windings seemed to be those of autotransformers but floating with respect to the ground. The ground is common. If you use it as directed, there is no problem, but you do not want to inflict a common mode surge (use it outdoors- where a high voltage i.e. lightning, can pass through). It does not seem to be an isolation transformer.
1501887
Why would they be dangerous? Only danger is if you deliberately contact the output. I've been around transformers all my life with no problem
1501888
Thank you for your diligence. If so, it represents a manufacturing bug and the manufacturer as well as the UL should be notified by AMAZON. I will check my unit too, in case that the fault is not widespread.
1325779
It instantly blew the fuse away when connected to 230V. The label at the back that says 250V is for Fuse rating only. Don't get fooled by that. I bought this based on one of the answers above. The user seem to have got it working in Brazil but it could be a lower voltage environment. I am still checking for options to make it work other than using a step down transformer.
1631974
I looked at the instructions for you and it doesn't say anything about working in a 240 volt environment at all. My guess is that it would not.
181647
These bulbs are for use with a 12v or 24v system only, they are not for use with a 120v system
1953233
I would not use it without a transformer. Using it without a transformer would most likely burn up the motor.
1726794
Bought this specifically because for use overseas and checked product description for 120-240 auto switching. However, received product has a tag in the adapter noting "for use with 120 volt only". I am very confused.
2002863
The instructions don't say you should, I never have in 20 years of use. Some I know have used a 30 amp fuse. To be safe you probably should. One of those things I am to do but never do.
1595509
Probably not. There are transformers that step 230 down to 110. But then you'll have to run your pump at that voltage too.
1483648
I am currently deployed to Afghanistan and discovered the same thing. I just use 240V and have had no problems.
729931
I would like to know this too. I live in Europe and I need to use it with 230 Voltage.
872757
If you don't know that, I would advise you not to play with these. Transformer is an AC product only, and 12V + 12V is the RMS rating of each independent winding, assuming that you connect the primaries right, which I remember to be 120V + 120V. The primaries in series will make this transformer to be able to accept 240 VAC, with each secondary at 12V. In this mode, if you connect these primaries in series from 120V, the secondary will only give you 6V+6V. 30VA is the total AC power you can get for the secondary.Be careful and SAFE
2017407
yes these numbers refer to amp rating of alternater...these units are junk...they rob you of output voltage...almost 2 volt drop!!! Buy the mechanical ones or better yet just use a regular solonoid. I use the solonoid on my 2001 Peterbuilt with 2 banks of 3 batteries each.
1113238
Dear Sheila,Thanks for your interest! Since we ship out of many locations across the US, it'd be of great help to us if you could provide an ASIN for the 220-240 version. Are they currently for sale on Amazon? If they are, I'll gladly check our stores for the higher voltage version you desire. Sometimes items haven't been listed for sale yet, so you never know. Thanks!
879560
It seems to have an auto switching dc converter. I have used it in Germany (240 volts) with only a plug adapter. I take it you are going to England. While i have not actually used it there, it would be incredible to believe the unit could handle 240 but not 230.
1599737
Yes Bruce. This was a big concern of mine as well. I am stationed overseas and was worried I would have to use a transformer. It supports 100-240V.
2082000
I'm running 24 volts AC,off my main board.And it works fine.If you do not have the power,a Linear model 109207 wiring harness kit comes with a transformer.
1001143
the 2 we bought run on 110volt... they are almost a year old are seem to be holding up well.. we use them to keep our boats from mildewing with the covers on them