Closes #7022: Add ITA type C (CEE 7/16) power port type

Author: jeremystretch

docs/release-notes/version-3.0.md

@@ -6,6 +6,7 @@
 
 * [#6917](https://github.com/netbox-community/netbox/issues/6917) - Make IP assigned checkmark in IP table link to interface
 * [#6973](https://github.com/netbox-community/netbox/issues/6973) - Enable custom ordering of reports
+* [#7022](https://github.com/netbox-community/netbox/issues/7022) - Add ITA type C (CEE 7/16) power port type
 * [#7118](https://github.com/netbox-community/netbox/issues/7118) - Render URL custom fields as hyperlinks in object tables
 * [#7323](https://github.com/netbox-community/netbox/issues/7323) - Add serial filter field for racks & devices
 * [#7372](https://github.com/netbox-community/netbox/issues/7372) - Link to local docs for model from object add/edit views

netbox/dcim/choices.py

@@ -316,6 +316,7 @@ class PowerPortTypeChoices(ChoiceSet):
     TYPE_CS8365C = 'cs8365c'
     TYPE_CS8465C = 'cs8465c'
     # ITA/international
+    TYPE_ITA_C = 'ita-c'
     TYPE_ITA_E = 'ita-e'
     TYPE_ITA_F = 'ita-f'
     TYPE_ITA_EF = 'ita-ef'
@@ -421,6 +422,7 @@ class PowerPortTypeChoices(ChoiceSet):
             (TYPE_CS8465C, 'CS8465C'),
         )),
         ('International/ITA', (
+            (TYPE_ITA_C, 'ITA Type C (CEE 7/16)'),
             (TYPE_ITA_E, 'ITA Type E (CEE 7/5)'),
             (TYPE_ITA_F, 'ITA Type F (CEE 7/4)'),
             (TYPE_ITA_EF, 'ITA Type E/F (CEE 7/7)'),