MKH wrote:I looked at several, including Juice Box, but was a little leery of the raft of negative reviews on Amazon.
"Raft" might be a bit strong with only 6% of 500 reviews either 1 or 2 stars. JuiceBox has been available for many years (ours is 4 years old and has never had a problem) and is one of the most popular U.S. EVSE's.
MKH wrote:My electrical panel is in the attached garage, and after local electricians quoted anywhere from $800 to $1200 to wire in a 220 receptacle, with a little Internet/Youtube "how-to" research, I ran 25 feet of PVC conduit from the panel to the back of the garage, and put in the 30 amp breaker, 10 gauge wiring and NEMA 6-50 receptacle myself, for not much over $100 in materials from HD. Easy afternoon project.
Most EVSE's use a NEMA 14-50 plug, so if you decide to replace your EVSE, you'll likely have to install a NEMA 14-50 receptacle.
MKH wrote:Suppose I could wire in a disconnect switch next to it, but don't think it vampires much electricity in it's wait-state. You can usually tell when an appliance is sucking up a chunk of electrons while "on" but not in use, as it will generate enough heat that the appliance is warm to the touch. This unit is pretty much stone-cold, unless plugged in to the car and charging, and only barely detectably warm then. And adding a mechanical switch adds in a wear-point, which as it is used and ages, will itself start to vampire electricity through worn connections.
Energy Star certifies EVSE's that consume, on average, 40% less power while idle (i.e., not plugged in or plugged in but not charging). The JuiceBox Pro 40 is Energy Star certified and consumes ~3 W while idle, but the Evocharge doesn't appear to be Energy Star certified. The Energy Star certified EVSE that consumes the most power while idle consumes ~7W of power, so it's likely that the Evocharge either consumes more than 7 W or hasn't been certified by Energy Star yet. That's not a huge vampire drain, but it's 24/7/365, so it could add up. I try to eliminate all vampire drains, so I installed a power switch in our charging circuit and turn it on only while actively charging.