Transfer Switch

Dusty R wrote:
Don't know what/how you are using for a generator. Many MHs with generators have a receiptical from the generator that you just plug your shore cord into, when you need to use your generator.

Dusty

But what fun is there in doing it the simple way? :)

Dunno about the OP, but I'm just looking for stuff to do as I'm retired.

Don't know what/how you are using for a generator. Many MHs with generators have a receiptical from the generator that you just plug your shore cord into, when you need to use your generator.

Dusty

MEXICOWANDERER wrote:


Brulaz señor please check the imprinted label on the relay that hums. You received a DIRECT CURRENT (DC) 110 vdc relay. Whether by mistake or intention I cannot tell you.

These relays operate SILENTLY - period. And they do not heat up via the magnetic coil. I have purchased 100+ of these relays in 40+ years so my answer here is not guesswork. The Miss Kelley 2, or example has eighteen of these relays. By their accident they had 33 amperes passing through the NC contacts on the Bridge relay and I found the issue by accident they were running a pair of AC heaters off the same receptacle.

Now REVERSE the problem. Install a 120 volt AC relay in a 110 volt DC circuit. The relay will chatter badly. The magnetics lose about 30% if misapplied.

EDIT EDIT EDIT EDIT EDIT EDIT

I just now ran across this excellent piece in PDF format explaining this more in detail...

http://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=13C3250_AppNote&DocType=CS&DocLang=EN

Thanks for that info. It's possible I ended up with a DC coil.

The NTE RO4 relays are available in both DC and AC with a single letter in their model designation (D or A) separating them, and 110VDC vs 120VAC. Can't get to the trailer right now but will take a look when we get back.

I like those Levitons. I may use that when my Chinese knife switch wears out. Except the knife is 3pdt.

DrewE wrote:
For a few dollars less (but still not "cheap"), you can get the 20A version rather than the 15A version: the Leviton 1286.

Last I looked there was also a 30 amp.

theoldwizard1 wrote:
Not "cheap", but if you want a typical style "wall switch" DPDT, this is it Leviton 1282

For a few dollars less (but still not "cheap"), you can get the 20A version rather than the 15A version: the Leviton 1286.

brulaz wrote:

MEXICOWANDERER wrote:


To try and atone for my screwup may I suggest...?

http://www.ebay.com/itm/YC-GP-DPDT-2-YuCo-Power-Relay-110-120V-AC-Coil-30Amp-2-Pole-DPDT-Heavy-Duty-U-/282382602316?hash=item41bf50904c:g:G8cAAOSwXYtYukSS

I KNOW this style of relay can carry 30 amps of 240 vac either NO or NC. Matter of fact I like THIS relay even better. Transparent. Can view action and can view contact point.

Oh shoot I screwed myself. Now, I have GOT to order some of these...

Last year I got the NTE version of that switch, without the transparent case, for US$43 (C$57), on Amazon. But after buying a plastic electrical box to mount it in, and the wire strain reliefs for the box, and wiring it all in, I found it makes an insistent hummmmm when the coil is engaged and generates a fair amount of heat. It works fine though.

So am beginning to wish I had just bought a premade DC coil version like the 30A Prog Dynamics PD5110010 which I can get for C$88 on amazon.ca

Prog Dyn 30A Transfer Switch


And ok, I'm convinced. It's a good idea to switch BOTH hot and neutral!

Brulaz señor please check the imprinted label on the relay that hums. You received a DIRECT CURRENT (DC) 110 vdc relay. Whether by mistake or intention I cannot tell you.

These relays operate SILENTLY - period. And they do not heat up via the magnetic coil. I have purchased 100+ of these relays in 40+ years so my answer here is not guesswork. The Miss Kelley 2, or example has eighteen of these relays. By their accident they had 33 amperes passing through the NC contacts on the Bridge relay and I found the issue by accident they were running a pair of AC heaters off the same receptacle.

Now REVERSE the problem. Install a 120 volt AC relay in a 110 volt DC circuit. The relay will chatter badly. The magnetics lose about 30% if misapplied.

EDIT EDIT EDIT EDIT EDIT EDIT

I just now ran across this excellent piece in PDF format explaining this more in detail...

http://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=13C3250_AppNote&DocType=CS&DocLang=EN

Not "cheap", but if you want a typical style "wall switch" DPDT, this is it Leviton 1282

oops wrong thread

2 amazing words. Cheap and transfer switch. I am not sure that these 2 words should ever be used in the same sentence. What are your plans and is this an RV you hope to keep or just a throw away RV?