You just installed and added your second of two JuiceNet enabled devices, but only have one electrical circuit. Good news, the JuiceNet servers allow you to share one electrical circuit safely while charging both vehicles.
For your electrician:
Code for Load sharing (NEC 2017)
625.42 Electric Vehicle Supply Equipment Circuit Ratings
Former 625.14 has been revised and relocated to 625.41 as a result of Article 625 being reorganized. A new last sentence that includes provisions for an automatic load management system has been added to 625.41. The maximum electric vehicle supply equipment load on a service and feeder shall be the maximum load permitted by the automatic load management system. This revision provides relief from service upgrades in some cases, but an automatic load management system has to limit the load on the service to its capacity.
Please note when setting up your load sharing, that the overcurrent device (Circuit Breaker) cannot exceed the rated amount of a normal JuiceBox installation.
- Pro 75/80 with same must only go on a 100A breaker, and nothing larger
- Pro 40 with same must only go on a 50A breaker, and nothing larger
- Pro 32 with same must only go on a 40A breaker, and nothing larger
Once you have the JuiceBoxes wired up and connected to WiFi, please add them to a Load Group. It will allow a combined output per the NEC 125% rule. For example, a 50 amp circuit for two or more Pro 40 units would split the available 40A,
To set up a Load Sharing Group, follow these steps:
Go to dashboard.emotorwerks.com and login (same as your app login) and under My JuiceNet select Load Groups.
Select + New Load Group and give it a name and shared amperage rating (this is 80% of the circuit breaker)
When selecting the “Maximum Current” for the group (this is remembered even if offline), please follow this chart:
100A circuit breaker = 80A Maximum Current (A)-JuiceBox 75 or 80 only
50A circuit breaker = 40A Maximum Current (A)-JuiceBox 40 only
40A circuit breaker = 32A Maximum Current (A)-JuiceBox 32 only
*30A circuit breaker = 24A Maximum Current (A)-only if an adapter is used
*20A circuit breaker = 16A Maximum Current (A)-only if an adapter is used
Now click on the group name to add the JuiceBoxes in your account
Select from your list, if you have 2 JuiceBoxes, you will see 2 to select. Check them and select "add selected."
The boxes will default to 6A, and will start there, and they will check to see if it is sharing so as not to trip the circuit before it gets the server command. When one car is charging, it will get full charging capabilities. When the second car plugs it it will start at 8A, then ramp up to 50% and the first car ramps down to 50%. As one car tapers off, the other will increase so that all available amps are able to be used as needed.
That's it, please note that if your server connection is lost the Load Share group will default to the safe start rate of 6A each.