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disconnects for your clean energy system

Clean energy systems such as a wind turbine or solar panels which produce electricity that are attached to a building need to have safety devices called “disconnects” according to the NEC (National Electric Code) Each major component of a clean energy system including inverters, and charge controllers, batteries (if your system is battery based) must be able to be disconnected from sources of power. To be compliant with NEC code, your disconnects must: be switches or ciricut breakers be installed in an accessible location must not have any exposed live conductors clearly display the on/off position be compatible with the system’s voltage and current The picture above shows a Xantrex DC Disconnect that meets all NEC code requirements. Overcurrent protection circuit breakers maybe used as disconnects. Only switched fuses can be considered disconnects. The NEC code says a solar photovoltaic system can have 6 or fewer disconnects, switched circuits or circut breakers to cut off all sources of...

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Intergrated Inverter DC/AC Disconnects

Disconnects for safety reasons rapidly disconnect from a power source. Disconnects are on / off switches and are required by National Electrical Code (NEC). With a solar power system for your system to pass inspection and meet all UL and NEC requirements your system must have a DC/AC Disconnects. Over the last few years inverter manufactures have been integrating dc, ac or DC & AC disconnects right into the inverter or as an external unit. Many inspectors are familiar with integrated DC / AC disconnects which is a good sign of the wide acceptance. The picture above shows a SMA Sunny Boy Inverter with an integrated disconnect, a knob style switch quickly shuts off the power in case of an...

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