Are Disconnects Required for Transformers?
A. a Disconnect Is Required to Disconnect All Transformer Ungrounded Primary Conductors. the Disconnect Must Be Located Within Sight of the Transformer, Unless...
A. A disconnect is required to disconnect all transformer ungrounded primary conductors. The disconnect must be located within sight of the transformer, unless the location of the disconnect is field-marked on the transformer and the disconnect is lockable [450.14], as shown in the Figure.
Do I need a disconnect on the secondary side of a transformer?
240.21(C)(4), an OCPD is not required at the secondary side of the transformer. The conductors are protected from physical damage in an approved manner. ... The disconnect means for the conductors is installed at a readily accessible location complying with one of the following: a.
Do you need a main breaker after a transformer?
A. No. Lighting and appliance branch-circuit panelboards supplied from a transformer, as permitted in 240.21(C), must have overcurrent protection for the panelboard on the secondary side of the transformer.