NEC® Changes · 2020 NEC®

336.10 TC cable uses

RevisedChanged in the 2020 NEC® (from the 2017 NEC®)· Updated October 24, 2026

What changed in 336.10

In one- and two-family homes, TC-ER-JP cable is now clearly allowed for branch circuits and feeders, inside and out, and TC cable can go in hazardous locations where Chapter 5 permits.

Point by point

  • The dwelling item was rewritten to be easier to use. It applies only to TC-ER-JP cable carrying both power and control conductors.

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  • 3 more points on exactly what changed
  • The 2017 rule next to the 2020 rule, side by side
  • Why it changed
  • What to do and check on the job

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This section across NEC® editions

2020 NEC®RevisedYou're here

In one- and two-family homes, TC-ER-JP cable is now clearly allowed for branch circuits and feeders, inside and out, and TC cable can go in hazardous locations where Chapter 5 permits.

2023 NEC®Revised

Tray cable carrying the TC-ER marking plus a service-use identification can now serve as service-entrance conductors, including underground runs when it's also identified for direct burial.

Open the 2023 page →
2026 NEC®No change

This section did not change from 2023 to 2026.

This is a plain-English summary, not the NEC®'s exact wording. Always check the full section in the NEC® edition your area has adopted, plus any local amendments.

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