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September 22, 2026 Service campaign

Pierce has updated our inverter installation policy to require a sub-feed breaker box with inverters that...

Pierce technical service bulletin 74B345 for 2002-2026 Pierce Arrow XT, 2002-2020 Pierce Dash and 2002-2026 Pierce Impel and others.

Bulletin number
74B345
Component
Electrical system
Summary
Pierce has updated our inverter installation policy to require a sub-feed breaker box with inverters that can supply over 2400W (20A @ 120V) in an unprotected output. In alignment with the National Electric Code (NEC), this will ensure that any 15A or 20A inverter load will not exceed the current rating of the wire or device.

Owners of these vehicles have filed 1 complaints in the electrical category.

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