Forum Discussion
myredracer
Jun 17, 2015Explorer II
Danger, danger! Even experienced and licenced electricans have screwed this up. Guaranteed stories about damaging 120 volt 30 amp RVs every year which can result in thousands of $$ in repair costs. Make sure whoever is doing this knows exactly what is needed. Test the voltage at the new TT-30R before plugging to verify it's okay.
The existing wiring is use-able and that's all. That is, as long as you intend to convert that existing receptacle and circuit for your RV only. You need a single pole, 120 volt 30 amp breaker in your panel. If the wiring is rated for 50 amps, that's good as it can minimize any potential voltage drop issue. You will need a TT-30R receptacle of course. You will note on these RV receptacles that they will be marked "125 volts 30 amps". The side of an RV also has the same marking. Electricians can completely overlook this and wire it at 240 volts...
I highly recommend that you install a disconnect switch at the new TT-30R location so that you aren't plugging in your TT live every time which can eventually cause damage to the plug blades and eventual overheating. A motor rated switch works well as they have heavy duty contacts to withstand inrush current.
The existing wiring is use-able and that's all. That is, as long as you intend to convert that existing receptacle and circuit for your RV only. You need a single pole, 120 volt 30 amp breaker in your panel. If the wiring is rated for 50 amps, that's good as it can minimize any potential voltage drop issue. You will need a TT-30R receptacle of course. You will note on these RV receptacles that they will be marked "125 volts 30 amps". The side of an RV also has the same marking. Electricians can completely overlook this and wire it at 240 volts...
I highly recommend that you install a disconnect switch at the new TT-30R location so that you aren't plugging in your TT live every time which can eventually cause damage to the plug blades and eventual overheating. A motor rated switch works well as they have heavy duty contacts to withstand inrush current.
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