How do I bypass a 30amp transfer switch

To bypass it you better know what your doing. Could a expensive experiment.

MrWizard wrote:


if you have a motorhome with generator but shore cord is plugged into an outlet in the cord storage bay you do not have a TS

That’s how you “bypass” a defective TS. Remove it and replace it with an RV-30 receptacle. One less auto-magic piece of junk to mess with. :W

:):)

I hate it when I'm typing and POOF. it's gone.

Though on it's face it sounds like bypassing a 30 amp Transfer switch is a matter of 3 wires. .it may not be so.

30 amp RV's often come with 5000-5500 watt Generators.

So how come a generator that can kick out nearly 50 amps?

Well the Transfer switch has two sides. one is "House" and handles everything except ONE Air Conditioner (either THE air conditioner or one of two)

The switch puts the A/C on the Generator's 20 amp circuit. the rest of the house on the 30. So there are up to 9 wires you need to deal with.

I would suggest replacing the switch rather than a bypass unless it is an emergency situtation in which case make and model please for more details.

first time poster
with a TS bypass question

what is your problem
and what RV do you have

we assume you are having power problems

if you have a trailer with no built in generator
you do not have a TS

if you have a motorhome with generator but shore cord is plugged into an outlet in the cord storage bay
you do not have a TS

if you have an RV with generator and the shore cord is stored away , but Not plugged into anything, then yes you have a TS

is your shore power input to the RV not working ?

Pipeliner89 wrote:
How do I bypass my 30amp transfer switch and which wires do I need to put to the shore cord

You need to discover what is connected to where. Then connect the main cord wires to the wires that feed the breaker panel.

If that is overwhelming.... probably best to get some help.

alaska dennis wrote:
30 amp is 110v so standard wiring black to black white to white and green to green.

But, you have to KNOW which of the 3 sets or wires are which. You do NOT want to connect the Genset input wires to the Shore Power and to breaker panel wires. Most Transfer switches will have a schematic showing what contacs go to the 3 sources. Doug

30 amp is 110v so standard wiring black to black white to white and green to green.

Why bypass it--is it broken?

Basically, the transfer switch has three sets of connections: two inputs and one output, each one with a hot, a neutral, and a ground lead. The output goes directly to the main AC electric panel, the hot to the main breaker, the neutral to the neutral bus, the ground to the ground bus. To bypass with the shore cord (and not have a generator hookup available), you'd connect the shore cord hot to the main breaker, the shore cord neutral to the neutral bus bar, and the shore cord ground to the ground bus bar, and disconnect the corresponding wires from the transfer switch.

Exactly which wires these are, and whether it might be easier to connect at some point other than directly at the electric panel (maybe a junction box by the transfer switch), would depend on the exact details of the electric installation in your RV.

It hopefully goes without saying, but whatever change you make, be sure you cannot ever have two power sources connected together. In other words, be certain that it is impossible for the generator output and shore power to be connected to each other. (Plugging the shore power cord into the generator is okay as that's just using the generator as the single power source.)