diff --git a/netbox/dcim/api/serializers.py b/netbox/dcim/api/serializers.py
index 1f7603241..d03d3f5a9 100644
--- a/netbox/dcim/api/serializers.py
+++ b/netbox/dcim/api/serializers.py
@@ -703,8 +703,8 @@ class PowerFeedSerializer(TaggitSerializer, CustomFieldModelSerializer):
         default=PowerFeedSupplyChoices.SUPPLY_AC
     )
     phase = ChoiceField(
-        choices=POWERFEED_PHASE_CHOICES,
-        default=POWERFEED_PHASE_SINGLE
+        choices=PowerFeedPhaseChoices,
+        default=PowerFeedPhaseChoices.PHASE_SINGLE
     )
     tags = TagListSerializerField(
         required=False
diff --git a/netbox/dcim/choices.py b/netbox/dcim/choices.py
index 5d44f1cf4..cd4124518 100644
--- a/netbox/dcim/choices.py
+++ b/netbox/dcim/choices.py
@@ -900,11 +900,27 @@ class PowerFeedSupplyChoices(ChoiceSet):
     SUPPLY_DC = 'dc'
 
     CHOICES = (
-        (SUPPLY_AC, 'Primary'),
-        (SUPPLY_DC, 'Redundant'),
+        (SUPPLY_AC, 'AC'),
+        (SUPPLY_DC, 'DC'),
     )
 
     LEGACY_MAP = {
         SUPPLY_AC: 1,
         SUPPLY_DC: 2,
     }
+
+
+class PowerFeedPhaseChoices(ChoiceSet):
+
+    PHASE_SINGLE = 'single-phase'
+    PHASE_3PHASE = 'three-phase'
+
+    CHOICES = (
+        (PHASE_SINGLE, 'Single phase'),
+        (PHASE_3PHASE, 'Three-phase'),
+    )
+
+    LEGACY_MAP = {
+        PHASE_SINGLE: 1,
+        PHASE_3PHASE: 3,
+    }
diff --git a/netbox/dcim/constants.py b/netbox/dcim/constants.py
index 13335de3f..79ad5229d 100644
--- a/netbox/dcim/constants.py
+++ b/netbox/dcim/constants.py
@@ -68,12 +68,6 @@ COMPATIBLE_TERMINATION_TYPES = {
 }
 
 # Power feeds
-POWERFEED_PHASE_SINGLE = 1
-POWERFEED_PHASE_3PHASE = 3
-POWERFEED_PHASE_CHOICES = (
-    (POWERFEED_PHASE_SINGLE, 'Single phase'),
-    (POWERFEED_PHASE_3PHASE, 'Three-phase'),
-)
 POWERFEED_STATUS_OFFLINE = 0
 POWERFEED_STATUS_ACTIVE = 1
 POWERFEED_STATUS_PLANNED = 2
diff --git a/netbox/dcim/forms.py b/netbox/dcim/forms.py
index f767d0903..fb9467397 100644
--- a/netbox/dcim/forms.py
+++ b/netbox/dcim/forms.py
@@ -3870,7 +3870,7 @@ class PowerFeedCSVForm(forms.ModelForm):
         help_text='AC/DC'
     )
     phase = CSVChoiceField(
-        choices=POWERFEED_PHASE_CHOICES,
+        choices=PowerFeedPhaseChoices,
         required=False,
         help_text='Single or three-phase'
     )
@@ -3948,7 +3948,7 @@ class PowerFeedBulkEditForm(BootstrapMixin, AddRemoveTagsForm, CustomFieldBulkEd
         widget=StaticSelect2()
     )
     phase = forms.ChoiceField(
-        choices=add_blank_choice(POWERFEED_PHASE_CHOICES),
+        choices=add_blank_choice(PowerFeedPhaseChoices),
         required=False,
         initial='',
         widget=StaticSelect2()
@@ -4024,7 +4024,7 @@ class PowerFeedFilterForm(BootstrapMixin, CustomFieldFilterForm):
         widget=StaticSelect2()
     )
     phase = forms.ChoiceField(
-        choices=add_blank_choice(POWERFEED_PHASE_CHOICES),
+        choices=add_blank_choice(PowerFeedPhaseChoices),
         required=False,
         widget=StaticSelect2()
     )
diff --git a/netbox/dcim/migrations/0084_3569_powerfeed_fields.py b/netbox/dcim/migrations/0084_3569_powerfeed_fields.py
index 5004258bd..5dafa4f3a 100644
--- a/netbox/dcim/migrations/0084_3569_powerfeed_fields.py
+++ b/netbox/dcim/migrations/0084_3569_powerfeed_fields.py
@@ -11,6 +11,11 @@ POWERFEED_SUPPLY_CHOICES = (
     (2, 'dc'),
 )
 
+POWERFEED_PHASE_CHOICES = (
+    (1, 'single-phase'),
+    (3, 'three-phase'),
+)
+
 
 def powerfeed_type_to_slug(apps, schema_editor):
     PowerFeed = apps.get_model('dcim', 'PowerFeed')
@@ -24,6 +29,12 @@ def powerfeed_supply_to_slug(apps, schema_editor):
         PowerFeed.objects.filter(supply=id).update(supply=slug)
 
 
+def powerfeed_phase_to_slug(apps, schema_editor):
+    PowerFeed = apps.get_model('dcim', 'PowerFeed')
+    for id, slug in POWERFEED_PHASE_CHOICES:
+        PowerFeed.objects.filter(phase=id).update(phase=slug)
+
+
 class Migration(migrations.Migration):
     atomic = False
 
@@ -53,4 +64,14 @@ class Migration(migrations.Migration):
             code=powerfeed_supply_to_slug
         ),
 
+        # PowerFeed.phase
+        migrations.AlterField(
+            model_name='powerfeed',
+            name='phase',
+            field=models.CharField(blank=True, max_length=50),
+        ),
+        migrations.RunPython(
+            code=powerfeed_phase_to_slug
+        ),
+
     ]
diff --git a/netbox/dcim/models.py b/netbox/dcim/models.py
index 3b9ee069e..1510c7bea 100644
--- a/netbox/dcim/models.py
+++ b/netbox/dcim/models.py
@@ -2108,7 +2108,7 @@ class PowerPort(CableTermination, ComponentModel):
             }
 
             # Calculate per-leg aggregates for three-phase feeds
-            if self._connected_powerfeed and self._connected_powerfeed.phase == POWERFEED_PHASE_3PHASE:
+            if self._connected_powerfeed and self._connected_powerfeed.phase == PowerFeedPhaseChoices.PHASE_3PHASE:
                 for leg, leg_name in POWERFEED_LEG_CHOICES:
                     outlet_ids = PowerOutlet.objects.filter(power_port=self, feed_leg=leg).values_list('pk', flat=True)
                     utilization = PowerPort.objects.filter(_connected_poweroutlet_id__in=outlet_ids).aggregate(
@@ -3121,9 +3121,10 @@ class PowerFeed(ChangeLoggedModel, CableTermination, CustomFieldModel):
         choices=PowerFeedSupplyChoices,
         default=PowerFeedSupplyChoices.SUPPLY_AC
     )
-    phase = models.PositiveSmallIntegerField(
-        choices=POWERFEED_PHASE_CHOICES,
-        default=POWERFEED_PHASE_SINGLE
+    phase = models.CharField(
+        max_length=50,
+        choices=PowerFeedPhaseChoices,
+        default=PowerFeedPhaseChoices.PHASE_SINGLE
     )
     voltage = models.PositiveSmallIntegerField(
         validators=[MinValueValidator(1)],
@@ -3197,7 +3198,7 @@ class PowerFeed(ChangeLoggedModel, CableTermination, CustomFieldModel):
 
         # Cache the available_power property on the instance
         kva = self.voltage * self.amperage * (self.max_utilization / 100)
-        if self.phase == POWERFEED_PHASE_3PHASE:
+        if self.phase == PowerFeedPhaseChoices.PHASE_3PHASE:
             self.available_power = round(kva * 1.732)
         else:
             self.available_power = round(kva)