User Guide
Application Notes and Recommendations
Whether you intend to use your Vulcan to save energy costs to offset a time-of-use energy plan,
as a standby/backup system, to save fuel by generator firming, as a solar energy storage system,
or a power quality improvement system, there are a few recommendations and specific
procedures that must be followed to ensure proper operation and safety.
AC Grid/Shore Power
AC grid/shore power is a source of 120Vac, 60Hz, sine wave alternating current that provides
energy to power AC loads. This source is usually the utility grid (power company) or an AC
generator. An automatic or manual AC source selector switch can be used to switch between
the multiple sources of grid/shore power to the Vulcan. The AC source feeding the Vulcan must
have the neutral conductor bonded to ground. When Vulcan passes grid/shore power through,
it will lift its internal bonding relay on the output and will rely on the AC input being bonded in
order to ensure that the power delivered to a sub panel is properly bonded.
AC Input
The circuit breaker or fuse that is used to supply the Vulcan must be rated at no more than 30A
and must be approved for use on 120Vac branch circuits. The wire used between the breaker
and the Vulcan input plug must be sized adequately to carry current up to the rating of the
input breaker and in accordance with the electrical codes or regulations applicable to your
installation.
AC Output
When connecting Vulcan to an AC voltage subpanel, the circuit breaker or fuse must be rated at
no more than the rating of the input breaker sourcing the Vulcan AC input and must be
approved for use on 120Vac branch circuits. The wire used between the Vulcan and the AC
output breaker must be of adequate size to match the AC input circuit breaker’s rating. Use a
minimum wire size of 12 AWG or 10 AWG. The wiring from each AC output breaker to each of
the loads must be adequately sized to carry the current rating of the individual AC output
breaker.
Battery Energy Storage and Power Solutions
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