When installing a messenger-supported wire, which of the following cable types are permitted to be installed?
- MV, MC, and MI cables.
- Multiconductor service entrance cable, which may use the messenger as a grounded conductor, as well as multiconductor underground feeder and branch circuit cable.
- Power and control tray cable, and power-limited tray cable.
- Other factory-assembled, mulitconductor control, signal, and power cables identified for the use.
- All of the above.
As noted in 396.10(A), there are many insulated cables and conductors permitted to be used with messenger-support wire. One of the key elements is to provide appropriate support by means of rings and saddles, or field-installed lashing material for conductor support.
The definition of "messenger-supported wiring" can be found in 396.2.
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