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My pet peeve here is that the electrical code has done nothing about what I think is the actual coming danger in outdoor devices: GFCI in the wrong places. It’
by amluto 2y ago
My pet peeve here is that the electrical code has done nothing about what I think is the actual coming danger in outdoor devices: GFCI in the wrong places. It’s very common to install a supposedly water resistant box 6" above grade outside, stick a “WR” (weather resistant) GFCI in the box, and call it a day. This, of course, provides absolutely to protection against problems caused by the receptacle or the wiring getting wet! Code should require GFCI protection indoors, or at least upstream in a NEMA 3R or better enclosure.
Similarly, inadequately waterproofed wire splices in boxes in the ground are very common. Code should, but does not, require GFCI protection on these circuits.
IMO outdoor circuits, with few exceptions, should be GFCI protected, possibly with the thresholds set based on circuit rating. So a 200A circuit could have a threshold of a few amps, and a 15 or 20A outdoor receptacle or lighting circuit should have a threshold no higher than 30mA.
And of course the wires coming out of an EVSE should be protected at 30mA or less, which they already are. And the wires coming in should be protected based on circuit rating if the EVSE itself is in a location exposed to water.