View Full Version : 230 volt question
07-18-2009, 03:35 PM
I have a 230 volt irrigation pump located on a floating dock on a man-made lake subject to Army Corps of Engineers regulations. Power is supplied from the house to a power pole located on the lakeshore. the pump is wired to the peer pole with a breakaway plug. All has been installed by an electrician. As the lake level drops the dock is pushed further out to the point that I have cannot push it out any further without disconnecting the pump.
Is a 230 volt "extension cord" an option or would it be too dangerous given the voltage involved ? I can't find any on the Internet so that may be a cle but I thought I'd ask.
07-19-2009, 02:21 AM
Is a 230 volt "extension cord" an option or would it be too dangerous given the voltage involved ?
A 230V cord wouldn't be any different than a 120V cord. You would likely have to make one by installing the appropriate cord caps.
The connections on an extension cord would be very vulnerable to moisture/water. They would be laying on the ground I presume.
You might want to conside putting a new, longer cord on the pump.
I have no idea what the legal limits on something like that would be.
Depending on the plug and receptacle, a 240 v. room air conditioner extension cord might work.
07-19-2009, 03:53 PM
Thanks for the responses.
I want to add about 50' of wire. After thinking about some more it is probably best to disconnect the existing wire and put a watertight junction box under the gangway. I can add new wire from the junction box to the pump and have the connection made permanently in the junction box.
07-19-2009, 06:30 PM
Stay away from household/shop extension cords. Use Romex for underground applications or single strand wire and plastic conduit. The wire needs to be rated for the current load (surge/continuous) of the irrigation pump and distance (voltage drop). This website (http://www.powerstream.com/Wire_Size.htm) contains a handy reference for wire gauge and load current. And, make sure the circuit is connected to a ground fault circuit breaker in your house. For any outside wiring, especially near water, you don't want to expose yourself or others to an unprotected circuit.
07-19-2009, 06:41 PM
Use Romex for underground applications or single strand wire and plastic conduit.
When you say Romex I assume you mean UF cable.