diff --git a/src/hooks/module/useTrestle.js b/src/hooks/module/useTrestle.js
index af2e8e6a..9671c88e 100644
--- a/src/hooks/module/useTrestle.js
+++ b/src/hooks/module/useTrestle.js
@@ -708,7 +708,9 @@ export const useTrestle = () => {
     })
 
     // trestles 배열에서 null인 경우 제거
-    const params = { trestles, pcses, modules }
+
+    const dblCblTotCnt = getTotalConnectCableCnt()
+    const params = { trestles, pcses, modules, dblCblTotCnt }
 
     //견적서 itemList 조회
     const { data, data2, result } = await getQuotationItem(params)
@@ -2270,9 +2272,9 @@ export const useTrestle = () => {
         }
 
         return (
-          (Math.abs(m1X - m2X) <= maxX && Math.abs(m1Y - m2Y) <= maxY) ||
-          (Math.abs(Math.abs(m1X - m2X) - maxX / 2) <= halfMaxX && Math.abs(Math.abs(m1Y - m2Y) - maxY) <= halfMaxY) ||
-          (Math.abs(Math.abs(m1X - m2X) - maxX) <= halfMaxX && Math.abs(Math.abs(m1Y - m2Y) - maxY / 2) <= halfMaxY)
+          (Math.abs(m1X - m2X) < maxX - moduleIntvlHor / 10 && Math.abs(m1Y - m2Y) < maxY - moduleIntvlVer / 10) ||
+          (Math.abs(Math.abs(m1X - m2X) - maxX / 2) < halfMaxX + 1 && Math.abs(Math.abs(m1Y - m2Y) - maxY) < halfMaxY + 1) ||
+          (Math.abs(Math.abs(m1X - m2X) - maxX) < halfMaxX + 1 && Math.abs(Math.abs(m1Y - m2Y) - maxY / 2) < halfMaxY + 1)
         )
       } else if (direction === 'east' || direction === 'west') {
         maxX = height + moduleIntvlHor / 10
@@ -2292,9 +2294,9 @@ export const useTrestle = () => {
         }
 
         return (
-          (Math.abs(m1X - m2X) <= maxY && Math.abs(m1Y - m2Y) <= maxX) ||
-          (Math.abs(Math.abs(m1X - m2X) - maxY / 2) <= halfMaxY && Math.abs(Math.abs(m1Y - m2Y) - maxX) <= halfMaxX) ||
-          (Math.abs(Math.abs(m1X - m2X) - maxY) <= halfMaxY && Math.abs(Math.abs(m1Y - m2Y) - maxX / 2) <= halfMaxX)
+          (Math.abs(m1X - m2X) <= maxY - moduleIntvlVer / 10 && Math.abs(m1Y - m2Y) <= maxX - moduleIntvlHor / 10) ||
+          (Math.abs(Math.abs(m1X - m2X) - maxY / 2) < halfMaxY + 1 && Math.abs(Math.abs(m1Y - m2Y) - maxX) < halfMaxX + 1) ||
+          (Math.abs(Math.abs(m1X - m2X) - maxY) < halfMaxY + 1 && Math.abs(Math.abs(m1Y - m2Y) - maxX / 2) < halfMaxX + 1)
         )
       }
     })
@@ -3035,6 +3037,73 @@ export const useTrestle = () => {
     return surfaces.every((surface) => surface.isComplete)
   }
 
+  const groupByType = (originArr = []) => {
+    const grouped = {}
+    const newArr = [...originArr]
+
+    // 타입별로 객체들을 분류
+    for (const item of newArr) {
+      if (!grouped[item.circuitNumber]) {
+        grouped[item.circuitNumber] = []
+      }
+      grouped[item.circuitNumber].push(item)
+    }
+
+    // 객체를 배열로 변환
+    return Object.values(grouped)
+  }
+
+  function groupByCircuitAndSurface(arr) {
+    const circuitGroups = {}
+
+    for (const item of arr) {
+      const { circuitNumber, surfaceId } = item
+      if (!circuitGroups[circuitNumber]) {
+        circuitGroups[circuitNumber] = new Map()
+      }
+
+      const surfaceMap = circuitGroups[circuitNumber]
+      const key = surfaceId
+
+      if (!surfaceMap.has(key)) {
+        surfaceMap.set(key, [])
+      }
+
+      surfaceMap.get(key).push(item)
+    }
+
+    // 결과: circuitNumber별 surface 그룹 수
+    const result = {}
+    for (const [circuit, surfaceMap] of Object.entries(circuitGroups)) {
+      result[circuit] = surfaceMap.size
+    }
+
+    return result
+  }
+
+  // 양단 케이블 구하는 공식
+  const getTotalConnectCableCnt = () => {
+    let cnt = 0
+    const surfaces = canvas.getObjects().filter((obj) => obj.name === POLYGON_TYPE.MODULE_SETUP_SURFACE)
+    const modules = canvas.getObjects().filter((obj) => obj.name === POLYGON_TYPE.MODULE)
+    surfaces.forEach((surface) => {
+      const modules = surface.modules
+      const groups = groupByType(modules)
+      groups.forEach((group) => {
+        const result = groupPoints(group, surface)
+        cnt += result.length - 1
+      })
+    })
+
+    const groupByCircuitAndSurfaceCnt = groupByCircuitAndSurface(modules)
+
+    Object.keys(groupByCircuitAndSurfaceCnt).forEach((key) => {
+      cnt += groupByCircuitAndSurfaceCnt[key] - 1
+    })
+
+    return cnt
+  }
+
   return {
     apply,
     getTrestleParams,