- Location
- Windsor, CO NEC: 2017
- Occupation
- Service Manager
1.) NEC Section/Paragraph: 210.20
2.) Proposal Recommends: [deleted text]
3.) Proposal: Delete 210.20, 210.20 (A) through (D).
Delete:
210.20 Overcurrent Protection. Branch circuit conductors and equipment shall be protected by overcurrent protective devices that have a rating or setting that complies with 210.20(A) through (D).
Move (A) with Exception to new section Article 240.4(H) and change the words relating to branch circuits to apply to all conductors:
(A) Continuous and Noncontinuous Loads. Where [delete: a branch circuit supplies] conductors supply continuous loads or any combination of continuous and noncontinuous loads, the rating of the overcurrent device shall not be less than the noncontinuous load plus 125 percent of the continuous load.
Exception: Where the assembly, including the overcurrent devices protecting the [delete: branch circuit] conductor(s), is listed for operation at 100 percent of its rating, the ampere rating of the overcurrent device shall be permitted to be not less than the sum of the continuous load plus the noncontinuous load.
Delete:
(B) Conductor Protection. Conductors shall be protected in accordance with 240.4. Flexible cords and fixture wires shall be protected in accordance with 240.5.
Delete:
(C) Equipment. The rating or setting of the overcurrent protective device shall not exceed that specified in the applicable articles referenced in 240.3 for equipment.
Delete:
(D) Outlet Devices. The rating or setting shall not exceed that specified in 210.21 for outlet devices.
4.) Substantiations: In general, this will reduce redundant text in the NEC. General overcurrent rules are more appropriate (and are already present) in Article 240, Overcurrent Protection.
210.20: With (A) - (D) relocated or deleted, this text becomes obselete.
(A): This is a uniform requirement for all conductors: a similar rule in 215.3 requires the same for feeders. It would be clearer for users of the NEC if the requirements were merged into an all-encompassing requirement for all conductors, located in an appropriate article.
(B): Redundant: 240.4 and 240.5 are enforceable over branch circuit conductors without 210.20 referencing them.
(C): Redundant: 240.3 is enforceable over branch circuit conductors without 210.20 referencing it.
(D): Redundant: 210.21 is enforceable over branch circuit conductors without 210.20 referencing it.
The deletions would require revisions to the following:
Section: 210.24; 225.9; 368.13;
Index: Appliances, Overcurrent Protection, Single;
Index: Branch Circuits, Individual, Overcurrent Protection;
Index: Branch Circuits, Overcurrent Protection;
Index: Continuous Load, Application;
Index: Overcurrent Protection, Branch Circuits;
Index: Overcurrent Protection, Single Appliance;
2.) Proposal Recommends: [deleted text]
3.) Proposal: Delete 210.20, 210.20 (A) through (D).
Delete:
210.20 Overcurrent Protection. Branch circuit conductors and equipment shall be protected by overcurrent protective devices that have a rating or setting that complies with 210.20(A) through (D).
Move (A) with Exception to new section Article 240.4(H) and change the words relating to branch circuits to apply to all conductors:
(A) Continuous and Noncontinuous Loads. Where [delete: a branch circuit supplies] conductors supply continuous loads or any combination of continuous and noncontinuous loads, the rating of the overcurrent device shall not be less than the noncontinuous load plus 125 percent of the continuous load.
Exception: Where the assembly, including the overcurrent devices protecting the [delete: branch circuit] conductor(s), is listed for operation at 100 percent of its rating, the ampere rating of the overcurrent device shall be permitted to be not less than the sum of the continuous load plus the noncontinuous load.
Delete:
(B) Conductor Protection. Conductors shall be protected in accordance with 240.4. Flexible cords and fixture wires shall be protected in accordance with 240.5.
Delete:
(C) Equipment. The rating or setting of the overcurrent protective device shall not exceed that specified in the applicable articles referenced in 240.3 for equipment.
Delete:
(D) Outlet Devices. The rating or setting shall not exceed that specified in 210.21 for outlet devices.
4.) Substantiations: In general, this will reduce redundant text in the NEC. General overcurrent rules are more appropriate (and are already present) in Article 240, Overcurrent Protection.
210.20: With (A) - (D) relocated or deleted, this text becomes obselete.
(A): This is a uniform requirement for all conductors: a similar rule in 215.3 requires the same for feeders. It would be clearer for users of the NEC if the requirements were merged into an all-encompassing requirement for all conductors, located in an appropriate article.
(B): Redundant: 240.4 and 240.5 are enforceable over branch circuit conductors without 210.20 referencing them.
(C): Redundant: 240.3 is enforceable over branch circuit conductors without 210.20 referencing it.
(D): Redundant: 210.21 is enforceable over branch circuit conductors without 210.20 referencing it.
The deletions would require revisions to the following:
Section: 210.24; 225.9; 368.13;
Index: Appliances, Overcurrent Protection, Single;
Index: Branch Circuits, Individual, Overcurrent Protection;
Index: Branch Circuits, Overcurrent Protection;
Index: Continuous Load, Application;
Index: Overcurrent Protection, Branch Circuits;
Index: Overcurrent Protection, Single Appliance;
