Users Manual

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5-JAW METER SOCKET
WARNING Some PV inverter manufacturers specify a full-sized neutral conductor
(i.e. the same size as the line conductors) as part of the inverter output wiring. The 5
th
jaw
inside a form 12S meter socket may have only nominal ampacity, intended to be
sufficient for the utility meter to calculate kW usage on 120/208v systems.
In 4-jaw meter sockets, and in cases where the 5
th
jaw in the meter socket has insufficient
ampacity to support the PV inverter or other DER:
Attach a copper wire pigtail from the rear of the ConnectDER to a neutral point inside
of the meter socket. The conductor must have a minimum ampacity as the line
conductors protected by the circuit breaker inside the ConnectDER unit.
Use a method approved by the utility and authority having jurisdiction (AHJ).
It is the responsibility of the installer to ensure the neutral pigtail or the 5
th
jaw (where
present) in the meter socket provides equal or greater ampacity as permitted to be
protected by the integrated circuit breaker.
Follow the instructions in the “4-JAW METER SOCKET
” section to install a neutral pigtail.