TugboatEng
Marine/Ocean
- Nov 1, 2015
- 11,704
I'm curious to hear opinions (or rules) on plug materials for potentially (not continuously) wet environments. This is a 480V grounded 3P4W application.
I am changing from a disconnect switch and plug to a switching duty plug. Currently when a wet plug is inserted and the plug energized by the disconnect the plugs sometimes burn out internally. The operators hands are not on the plug during this fault.
With the new style plug, the operators hands will be on it while it is being energized (no more manual disconnect). I feel that grounded metallic plugs would be safer in this case. The receptacle will be installed on a metallic enclosure. We have always used metallic plugs in the past but this new product has both poly and metal options.
I am changing from a disconnect switch and plug to a switching duty plug. Currently when a wet plug is inserted and the plug energized by the disconnect the plugs sometimes burn out internally. The operators hands are not on the plug during this fault.
With the new style plug, the operators hands will be on it while it is being energized (no more manual disconnect). I feel that grounded metallic plugs would be safer in this case. The receptacle will be installed on a metallic enclosure. We have always used metallic plugs in the past but this new product has both poly and metal options.