I need a 50 amp manual transfer switch
 

I need a 50 amp manual transfer switch

Started by Danny, April 03, 2018, 04:05:02 PM

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Danny

What manual transfer switches do your guys recommend?  Thanks
I have heard it said, "life comes at you fast".  I didn't know it would be in the shape of a bus  :-)



richard5933

Quote from: Danny on April 03, 2018, 04:05:02 PM
What manual transfer switches do your guys recommend?  Thanks

Best manual transfer switch I have found is Blue Sea. They have a few options depending on how many poles, positions, etc. This is what I used on my 4106 to transfer from generator to shore power. Since I wanted to switch both hot lines and the neutral I got one that could do so. The down side is that they are pricey.

There are a few other brands available, and most of the better ones can be found at marine supply houses. Here's an example that even has three positions + off (shore/gen/inverter) https://www.fisheriessupply.com/newmar-ac-transfer-switches

I know nothing about this particular switch - just throwing it out there as a less expensive option to the Blue Sea. Might be worth a phone call to the seller to ask about quality.

I've tried a few of the cheaper versions found on Amazon and eBay, but each time I've been disappointed. The quality was minimal at best, the things weighed almost nothing compared to the Blue Sea, and I didn't feel safe actually using any of them.

Richard
1974 GMC P8M4108a-125 Custom Coach "Land Cruiser" (Sold)
1964 GM PD4106-2412 (Former Bus)
1994 Airstream Excella 25-ft w/ 1999 Suburban 2500
Located in beautiful Wisconsin

Danny

I have heard it said, "life comes at you fast".  I didn't know it would be in the shape of a bus  :-)

buswarrior

Using plugs is a cheap and easy way to deal with neutral/ground bonding...

A frustrating topic...

Happy coaching!
Buswarrior
Frozen North, Greater Toronto Area
new project: 1995 MCI 102D3, Cat 3176b, Eaton Autoshift

richard5933

Quote from: buswarrior on April 03, 2018, 04:32:55 PM
Using plugs is a cheap and easy way to deal with neutral/ground bonding...

A frustrating topic...

Happy coaching!
Buswarrior

Using plugs accomplishes the goal, but usually requires going outside since that is where the plug/receptacle are located. Even though our switch is still mechanical, I do prefer having the convenience of just rotating a knob.

Regarding the neutral/ground bonding, it's easily solved by using a three-pole switch that switches both hot lines and the neutral.
Richard
1974 GMC P8M4108a-125 Custom Coach "Land Cruiser" (Sold)
1964 GM PD4106-2412 (Former Bus)
1994 Airstream Excella 25-ft w/ 1999 Suburban 2500
Located in beautiful Wisconsin

eagle19952

60$ vs. 250$ 

when i'm on my generator.. i have no reason to switch sources
when I'm on the pole, same deal.
my inverter is always on, my source powers the inverter charger,  the things I want on it when I have no source, are battery/inverter source 24/7/365.
and yes I full time that way.
in fact about the only thing my pole/gen powers is
my inverter
my heat
my AC
my hot water
lights, most outlets and stove top, microwave and what not are all serviced by inverter whose out puts are a sub panel.
and I have a manual jumper to take the inverter out totally (4 foot #6 4 wire and a screw driver)
1/2 my lights are 12v, 1/2 are 120v
50% are LED bulbs
ALL electric coach
House and chassis are the same bank
gen has a separate battery
toad has jumper cables
I do have an auto transfer
when/if it craters I'll use cords and 50 amp receptacles.
And buy the wife a nice umbrella :)
Donald PH
1978 Model 05 Eagle w/Torsilastic Suspension,8V71 N, DD, Allison on 24.5's 12kw Kubota.

buswarrior

You only go outside if you install them out there...

Busnuts have a sado-masochist bent when it comes to system design. Why would switching configurations be out there??? Follow the leader gets painful, if you chose the wrong leader?

Manual power plugs under the couch upstairs are far more pleasant, when the storm takes out the campground power pole...

Design the coach so you can stay INSIDE...

Happy coaching!
Buswarrior
Frozen North, Greater Toronto Area
new project: 1995 MCI 102D3, Cat 3176b, Eaton Autoshift

eagle19952

Quote from: buswarrior on April 03, 2018, 06:03:54 PM
You only go outside if you install them out there...


Manual power plugs under the couch upstairs are far more pleasant, when the storm takes out the campground power pole.

Happy coaching!
Buswarrior

i keep my stamp collection under the couch :)
Donald PH
1978 Model 05 Eagle w/Torsilastic Suspension,8V71 N, DD, Allison on 24.5's 12kw Kubota.

chessie4905

Do it outside. Hang a jacket and umbrella inside. Our 4104 had a selector switch on side panel above driver. Generator- nuetral- shore. I think it was Cole-Hersee.
GMC h8h 649#028 (4905)
Pennsylvania-central

Dave5Cs

"Perfect Frequency"1979 MCI MC5Cs 6V-71,644MT Allison.
2001 Jeep Cherokee Sport 60th Anniversary edition.
1998 Jeep TJ ,(Gone)
Somewhere in the USA fulltiming.

sledhead

I had to replace my old switch that is the same one that Dave just posted with the same but new . as I read the instructions they say to mount the switch vertical or it will burn out early and BUZZZZZZZ.. so I did , funny how the old one was mounted on its side ? and ya it BUZZED loud and that is why I had to change it . the old one was 17 years old and did work but it made a LOUD BUZZZZZZZZING noise

  Dave    
dave , karen
1990 mci 102c  6v92 ta ht740  kit,living room slide .... sold
2000 featherlite vogue vantare 550 hp 3406e  cat
1875 lbs torque  home base huntsville ontario canada

oldmansax

I made my own. Cheaper and versatile. I used two 100AMP (you can use 75A) contactors and a DPDT toggle switch (ON-OFF-ON) I also install DELAY-ON-BREAK relays to keep loads from trying to restart immediately upon a momentary power interruption. You can also install any other kink of power monitor if you want. You can put the contactors wherever needed and install the switch inside the bus. Don't make fun of my drawing.  ;D ;D

TOM
1995 Wanderlodge WB40 current
1985 Wanderlodge PT36
1990 Holiday Rambler
1982 Wanderlodge PT40
1972 MCI MC7

buswarrior

Nice drawing.

Unlicenced software?

You nasty busnut! ROFLMAO!

Happy coaching!
Buswarrior
Frozen North, Greater Toronto Area
new project: 1995 MCI 102D3, Cat 3176b, Eaton Autoshift