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What is the differences between insulated/bondable neutral and insulated/bondable single neutral

Insulated/Bondable Split Neutral - Panels are supplied with split insulated neutrals with an insulated cross strap. For service entrance applications,
the neutral must be bonded by using the bonding strap supplied with the panel. For non-service entrance (subpanel) applications, the panel may be installed with the bonding strap not connected to the neutral. Separate ground bars must be used on non-service entrance panels.

 

Insulated/Bondable Single Neutral  -  Panels are supplied with a single insulated neutral. For service entrance applications, all that is required to bond the neutral is to loosen the bonding screw and the neutral screw directly beside it, insert the bonding strap into the neutral bar, and retighten both connections. The single neutral can be moved by the contractor to the other side of the panel, if desired. When used as a service entrance panel, unused neutral connections may be used for the termination of equipment grounds. For nonservice entrance (sub-panel) applications, the panel may
be installed with the bonding strap not connected to the neutral. Separate ground bars must be used on non-service entrance panels.