diff --git a/helix/calculators/bom_calculator.py b/helix/calculators/bom_calculator.py
index 7102180..60a9df9 100644
--- a/helix/calculators/bom_calculator.py
+++ b/helix/calculators/bom_calculator.py
@@ -1,6 +1,6 @@
 from numpy import array, ceil
 
-from helix.calculators.bom_helper import add_parts_to_list, apply_package_size_rounding
+from helix.calculators.bom_helper import add_parts_to_list, apply_package_size_rounding, is_inverter_delta
 from helix.calculators.ebom_calculator import EbomCalculator
 from helix.calculators.mechanical_bom_calculator import MechanicalBomCalculator
 from helix.constants.parts import *
@@ -51,8 +51,8 @@ class BomCalculator(object):
         column_count = sum(subarray.column_count for subarray in self.subarrays)
         parts_list = MechanicalBomCalculator(self.values, self.panels, self.subarrays).mechanical_bom()
         ebom_parts_list = EbomCalculator(self.values, ceil(row_count), ceil(column_count), parts_list.get(module)).compute_ebom()
-
         add_parts_to_list(parts_list, ebom_parts_list)
-
+        if is_inverter_delta(self.values):
+            add_parts_to_list(parts_list, {rubber_foot: -1}, parts_list.get(rubber_foot))
         apply_package_size_rounding(parts_list, package_sizes)
         return parts_list
diff --git a/helix/calculators/bom_helper.py b/helix/calculators/bom_helper.py
index e8c9539..fb99bb7 100644
--- a/helix/calculators/bom_helper.py
+++ b/helix/calculators/bom_helper.py
@@ -2,6 +2,7 @@ from math import ceil
 
 from helix.constants.panel_type import PanelType
 from helix.constants.parts import *
+from helix.constants.inverter_brand import InverterBrand
 
 # This story askes for this special parts to be showed 
 # www.pivotaltracker.com/n/projects/1544689/stories/148016595
@@ -41,3 +42,12 @@ def get_panel_type_counts(panels):
         panel_type_counts[panel.panel_type] += 1
 
     return panel_type_counts
+
+def is_inverter_delta(values):
+    try:
+        return (values.inverter_brands()[0]['inverter_brand_id']==InverterBrand.DELTA.value)
+    except IndexError :
+        #Some tests are calculating bom without providing inverter brand so inverter_brands is empty
+        #for those tests, inverter brand is irrelevant
+        return False
+
diff --git a/helix/calculators/ebom_calculator.py b/helix/calculators/ebom_calculator.py
index e9113af..9341c5a 100644
--- a/helix/calculators/ebom_calculator.py
+++ b/helix/calculators/ebom_calculator.py
@@ -1,12 +1,11 @@
 from math import ceil
 
-from helix.calculators.bom_helper import add_parts_to_list
+from helix.calculators.bom_helper import add_parts_to_list, is_inverter_delta
 from helix.constants import ebom_parts
 from helix.constants.ebom_parts import *
 from helix.constants.parts import wire_clip_large, cable_support, cable_support_lid, channel_nut, sunshade
 from helix.constants.system_type import SystemType
 from helix.constants.inverter_brand import InverterBrand
-from helix.forms.ebom_form import InverterBrandForm
 
 
 class EbomCalculator(object):
@@ -39,13 +38,8 @@ class EbomCalculator(object):
         module_type = self.values.module_type()
         system_type = self.values.system_type()
     
-        is_delta=None
-        try:
-            is_delta=(self.values.inverter_brands()[0]['inverter_brand_id']==InverterBrand.DELTA.value)
-        except IndexError :
-            #Some tests are calculating bom without providing inverter brand so inverter_brands is empty
-            #for those tests, inverter brand is irrelevant
-            is_delta=False
+        is_delta=is_inverter_delta(self.values)
+        print("IS DELTA : ",is_delta)
             
         inverter_count = 0
         total_ac_run_length = 0