Starting January 1, 2018, the NEC 2017 690.12 module-level shutdown requirements will go into effect. NEC 2017 is in effect in 26 states, so make sure whether or not your state is affected by this. See map below:
While some string inverters are affected by this upcoming update, if you’re using microinverters or optimizers, you’ll automatically meet this particular requirement. Note however that some older models of microinverters do not meet other NEC 2017 requirements such as integrated grounding, so make sure to stay updated.
Other manufacturers have updated their products to meet the new requirement. SMA, for example, has teamed up with Tigo to be compliant. By retrofitting your solar panels with the TS4-R-O, you’ll not only meet module-level rapid shutdown requirements but also be able to observe production by the individual solar panel. Learn more about Tigo and its solution.