370 – Cable bus

370.20 – Conductor Sizing and Terminations for Cablebus

Change at a Glance:

Two new informational notes were added to 370.20 related to conductor sizing and terminations for cablebus.

370.20 Conductor Size and Termination. (Cablebus)

(A) Conductors. The current-carrying conductors in cablebus shall: (1) Have an insulation rating of 75°C (167°F) or higher and be of an approved type suitable for the application. (2) Be sized in accordance with the design of the cablebus but in no case be smaller than 1/0.

(B) Termination. Approved terminating means shall be used for connections to cablebus conductors.
Informational Note No. 1: See 110.14(C) for conductor temperature limitations due to termination provisions for installations up to and including 2000 volts.
Informational Note No. 2: See 110.40 for conductor temperature limitations due to termination provisions for installations 2001 volts to 35,000 volts.