Basically 690 12 states that pv system circuits installed on or in buildings shall include a rapid shutdown function that controls specific conductors as follows.
Rapid shutdown solar panels long island.
The section 690 12 update to the 2017 national electrical code nec calls for module level rapid shutdown of solar systems instead of nec 2014 s array level shutdown requirement.
The rapid shutdown rule now in force in most jurisdictions means that micro inverters or power optimizers need to be used rather than string inverters.
An average solar system on long island or in new york city ranges between 10 000 and 25 000.
Otherwise the system will work on island mode and remain unsafe for you to work on.
This rapid shutdown kit made by solaredge ensures that your safedc feature of your solaredge inverters will de energize to less than 30 volts within 10 seconds which is the requirement of nec 2014 rapid shutdown functionality according to section 690 12.
Requirements for controlled conductors shall only apply to pv system conductors of more than 5 ft inside a building or 10 ft from a pv array.
Controlled conductors shall be limited to not more than 30 volts and 240 volt amperes within 10 seconds of shutdown.
Rapid shutdown kit installation and configuration single phase inverters this document describes how to install the rapid shutdown kit in the solaredge safety switch and how to enable the rapid shutdown feature in the inverter in order to provide the functionality described in the rapid shutdown clause of nec2014 690 12 1 through 4.
But to use other hardware whether it be a string inverter a charge controller or a hybrid inverter requires additional electronics to accomplish the shut down tigo appears to be the primary supplier of relevant hardware they have 2 very different.
Compare the prices and reputations of solar installers solar panel manufacturers and other solar energy companies servicing long island city.
Afikt microinverters implement suitable shutdown as do solar edge systems.
Solarbos rapid shutdown solutions as part of the string inverter solutions provide a low cost and space saving solution for residential and commercial solar systems when it isn t feasible for the string inverter to be within the array boundary per nec 690 12.
As a system technology specialist sma has been developing and distributing high quality pv inverters and innovative technology for intelligent energy management for over 30 years.
When you turn off the ac side you must remember to turn them off both.
By turning off the dc breaker from the battery bank you completely ensure that the system will be totally out and that you will be able to safely access the batteries.
Soon all rooftop pv installations will require rapid shutdown.
1 2019 when nec 2017 goes into effect in certain jurisdictions all conductors within an array s 1 ft boundary have to be reduced to 80 v or less within 30 seconds of rapid shutdown initiation.
