hardworkingstiff
Senior Member
- Location
- Wilmington, NC
I've been getting involved in marinas lately. Maintaining a 3% or less voltage drop is impossible without installing transformers on the docks. That gets pretty expensive and there is too much competition willing to do it without transformers.
I?ve spoken with three different boat manufacturers and they all agree that the boats will operate down to 200-volts before they have problems. This makes sense since most single-phase motors today are able to operate on two legs of a 3-phase wye service.
I am of the opinion that the wire should be sized to deliver 200+ volts at 100% of the connected load if the power company has a 5% voltage drop, and the wire should be sized to deliver 220+ volts at 80% of the connected load if the power company maintains 240-volts. In our area, the power company is delivering about 246 during non-peak hours.
I would like to hear comments on what you feel an acceptable voltage drop would be for a 240-volt 1-phase feeder to the marine power pedestal.
I?ve spoken with three different boat manufacturers and they all agree that the boats will operate down to 200-volts before they have problems. This makes sense since most single-phase motors today are able to operate on two legs of a 3-phase wye service.
I am of the opinion that the wire should be sized to deliver 200+ volts at 100% of the connected load if the power company has a 5% voltage drop, and the wire should be sized to deliver 220+ volts at 80% of the connected load if the power company maintains 240-volts. In our area, the power company is delivering about 246 during non-peak hours.
I would like to hear comments on what you feel an acceptable voltage drop would be for a 240-volt 1-phase feeder to the marine power pedestal.