"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:I looked at several, including Juice Box, but was a little leery of the raft of negative reviews on Amazon.
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: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.
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.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.
Interesting! I didn't know that the basic version without WiFi was no longer available.MKH wrote:If eMotorworks still made the classic model, without the wifi and voice control, which I don't need or want, and adds to the cost, I might have been tempted - but 6% translates into 1 out of every 17 shipped getting knocked on Amazon, usually for total failure after a few months, or on-going issues with flaky software for the added bells and whistles.
Yeah, those are long-gone. eMotorworks has gone main-stream, and with maybe a few growing pains.I bought the 60 A JuiceBox kit
A problem with adding an on-off switch to an EVSE is that it would need to be able to operate only when the EVSE is not charging or it would have to be a heavy-duty, relatively expensive switch capable of switching high currents. If an EVSE loses power while charging, the EV's on-board charger would register a charging error. I never turn off our charging circuit's power switch while our EVSE is charging, but to prevent that with an on-off switch on an EVSE would add additional complexity and cost to an EVSE.MKH wrote:That if the "appliance" didn't have an on/off switch, then it was designed to be kept powered up in a wait-state. He said it is actually harder on solid-state circuitry to be powered up and shut off repeatedly, than to be left on in a wait-state, unless specifically designed for the repeated on/off cycles.
As all of us begin to understand the serious environmental cost of wasting energy, especially as EV and EVSE numbers increase, such unnecessary wasting of energy leaving an EVSE running continuously when it's absolutely unnecessary will become an issue that is addressed because it's so easy to do so. We are urged to eliminate vampire loads in our homes which are generally no larger than that of an EVSE idling, so why ignore an EVSE?MKH wrote:He also said that the few watts, energy star certified or not, that an EVSE uses on standby is pretty negligible. If the EVSE uses 7 watts on standby @ 12 cents a kilowatt hour, you are looking at something like $8 bucks a year's in electricity costs if it is on standby 24 hours a day, seven days a week.
Jim,jadnashuanh wrote:Electronic devices tend to fail during power on cycling. Note, though, that that exposes them to power line anomalies that can also cause damage long-term. This is one reason why a whole house surge suppressor is useful. Some products include inlet power conditioning circuits, but not all. IMHO, it doesn't hurt to try to protect everything, and local conditioning for things that are more expensive.