{"id":2145,"date":"2026-08-21T00:00:00","date_gmt":"2026-08-21T00:00:00","guid":{"rendered":"https:\/\/abukelec.com\/?p=2145"},"modified":"2026-10-22T02:55:17","modified_gmt":"2026-10-22T02:55:17","slug":"%d9%85%d8%a7-%d9%87%d9%88-%d9%85%d9%86%d9%81%d8%b0-%d8%a7%d9%84%d8%aa%d9%8a%d8%a7%d8%b1-%d8%a7%d9%84%d9%83%d9%87%d8%b1%d8%a8%d8%a7%d8%a6%d9%8a-%d8%a7%d9%84%d9%85%d9%82%d8%a7%d9%88%d9%85-%d9%84%d9%84","status":"publish","type":"post","link":"https:\/\/abukelec.com\/ar\/blog\/what-is-a-20-amp-250-volt-tamper-resistant-outlet\/","title":{"rendered":"\u0645\u0627 \u0647\u0648 \u0645\u0646\u0641\u0630 \u0627\u0644\u0636\u063a\u0637 20 \u0623\u0645\u0628\u064a\u0631 250 \u0641\u0648\u0644\u062a \u0627\u0644\u0645\u0642\u0627\u0648\u0645 \u0644\u0644\u062a\u062e\u0631\u064a\u0628\u061f"},"content":{"rendered":"

\u0639\u0646\u062f\u0645\u0627 \u0648\u0627\u062c\u0647 \u0645\u0634\u062a\u0631\u064d \u0644\u0644\u0645\u0639\u062f\u0627\u062a \u0641\u064a \u0641\u064a\u0646\u064a\u0643\u0633 \u0637\u0644\u0628\u064b\u0627 \u0644\u0645\u0642\u0635\u0648\u0631\u0629 \u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0628\u0642\u062f\u0631\u0629 20 \u0623\u0645\u0628\u064a\u0631 \u0645\u062e\u0635\u0635\u0629 \u0644\u0644\u0648\u0631\u0634\u060c \u0631\u0623\u0649 \u0639\u0628\u0631 \u0627\u0644\u0625\u0646\u062a\u0631\u0646\u062a \u0641\u062a\u062d\u0629 \u0639\u0644\u0649 \u0634\u0643\u0644 \u062d\u0631\u0641 T\u060c \u0648\u0627\u0641\u062a\u0631\u0636 \u0623\u0646\u0647\u0627 \u062a\u062a\u0648\u0627\u0641\u0642 \u0645\u0639 \u0645\u0642\u0628\u0633 \u0627\u0644\u0645\u0637\u0628\u062e\u060c \u0641\u0623\u0642\u0631\u0651 \u0628\u0643\u0644 \u062b\u0642\u0629 \u062f\u0641\u0639\u0629 \u0645\u0646 \u0627\u0644\u0623\u062c\u0647\u0632\u0629 \u0628\u062c\u0647\u062f 250 \u0641\u0648\u0644\u062a. \u063a\u064a\u0631 \u0623\u0646 \u0627\u0644\u0645\u0642\u0627\u0628\u0633 \u0644\u0645 \u062a\u062a\u0646\u0627\u0633\u0628 \u0645\u0639 \u0627\u0644\u0645\u0642\u0628\u0633\u060c \u0643\u0645\u0627 \u0623\u0638\u0647\u0631\u062a \u0645\u062e\u0637\u0637\u0627\u062a \u0627\u0644\u062f\u0627\u0626\u0631\u0629 \u0648\u062c\u0648\u062f \u0645\u0648\u0635\u0644\u064a\u0646 \u063a\u064a\u0631 \u0645\u0624\u0631\u0636\u064a\u0646 \u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u062e\u0637 \u0648\u0645\u062d\u0627\u064a\u062f\u060c \u0648\u0631\u0641\u0636\u062a \u0645\u0631\u0627\u062c\u0639\u0629 \u0627\u0644\u0633\u0644\u0627\u0645\u0629 \u0647\u0630\u0627 \u0627\u0644\u0627\u0633\u062a\u0628\u062f\u0627\u0644. \u0644\u0645 \u062a\u0643\u0646 \u0627\u0644\u0623\u062c\u0647\u0632\u0629 \u0645\u0639\u064a\u0628\u0629\u061b \u0628\u0644 \u0625\u0646 \u0627\u0644\u0645\u0634\u062a\u0631\u064a \u0642\u062f \u0627\u0631\u062a\u0643\u0628 \u062e\u0644\u0637\u064b\u0627. \u0646\u064a\u0645\u0627 5-20R<\/strong> \u0648\u062a\u0643\u0648\u064a\u0646\u0627\u062a 6-20R. \u0643\u0627\u0646 \u0627\u0644\u0633\u0624\u0627\u0644 \u0627\u0644\u062d\u0642\u064a\u0642\u064a \u0647\u0648: \u0645\u0627 \u0647\u0648 \u0645\u0642\u0628\u0633 \u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0645\u0642\u0627\u0648\u0645 \u0644\u0644\u0639\u0628\u062b \u0628\u0642\u062f\u0631\u0629 20 \u0623\u0645\u0628\u064a\u0631<\/strong> \u0645\u0635\u0646\u0651\u0641 \u0628\u062c\u0647\u062f 250 \u0641\u0648\u0644\u062a\u061f<\/p>\n

\u0645\u0644\u062e\u0635:<\/strong> \u0645\u0642\u0628\u0633 \u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0645\u0642\u0627\u0648\u0645 \u0644\u0644\u0639\u0628\u062b \u0628\u0642\u062f\u0631\u0629 20 \u0623\u0645\u0628\u064a\u0631 \u0648\u0641\u0648\u0644\u0637\u064a\u0629 \u0645\u0642\u062f\u0631\u0629 \u0628\u0640 250 \u0641\u0648\u0644\u062a \u0647\u0648 \u0639\u0627\u062f\u0629\u064b \u0639\u0628\u0627\u0631\u0629 \u0639\u0646 \u0646\u064a\u0645\u0627 6-20R<\/strong>\u062c\u0647\u0627\u0632 \u0645\u0646 \u0627\u0644\u0646\u0648\u0639 \u0630\u064a \u0627\u0644\u0645\u0635\u0627\u0631\u064a\u0639 \u0627\u0644\u062f\u0627\u062e\u0644\u064a\u0629 \u0627\u0644\u0645\u0646\u0633\u0642\u0629. \u0648\u0647\u0648 \u0645\u062e\u0635\u0635 \u0644\u062f\u0627\u0626\u0631\u0629 \u0641\u0631\u0639\u064a\u0629 \u0645\u0646 \u0641\u0626\u0629 250 \u0641\u0648\u0644\u062a\u060c \u0648\u0639\u0627\u062f\u0629\u064b \u0645\u0627 \u064a\u0633\u062a\u062e\u062f\u0645 \u0645\u0648\u0635\u0644\u064a\u0646 \u063a\u064a\u0631 \u0645\u0624\u0631\u0636\u064a\u0646 \u0628\u0627\u0644\u0625\u0636\u0627\u0641\u0629 \u0625\u0644\u0649 \u0633\u0644\u0643 \u0627\u0644\u062a\u0623\u0631\u064a\u0636 \u0627\u0644\u062e\u0627\u0635 \u0628\u0627\u0644\u0645\u0639\u062f\u0627\u062a\u060c \u062f\u0648\u0646 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0633\u0644\u0643 \u0645\u062d\u0627\u064a\u062f\u060c \u0648\u0630\u0644\u0643 \u0644\u062a\u063a\u0630\u064a\u0629 \u062d\u0645\u0644 \u0645\u0628\u0627\u0634\u0631 \u0628\u062c\u0647\u062f 240 \u0641\u0648\u0644\u062a. \u0644\u0627 \u064a\u0645\u0643\u0646 \u0627\u0633\u062a\u0628\u062f\u0627\u0644\u0647 \u0628\u0645\u0642\u0628\u0633 NEMA 5-20R \u0628\u062c\u0647\u062f 125 \u0641\u0648\u0644\u062a. \u064a\u062a\u0639\u064a\u0646 \u0639\u0644\u0649 \u0627\u0644\u0645\u0634\u062a\u0631\u064a\u0646 \u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u0634\u0641\u0631\u0627\u062a\u060c \u0648\u0627\u0644\u0642\u062f\u0631\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 20 \u0623\u0645\u0628\u064a\u0631\u060c \u0648\u062f\u0627\u0626\u0631\u0629 \u0627\u0644\u062a\u063a\u0630\u064a\u0629 \u0627\u0644\u0641\u0631\u0639\u064a\u0629\u060c \u0648\u062d\u062c\u0645 \u0627\u0644\u0645\u0648\u0635\u0644\u0627\u062a\u060c \u0648\u0646\u0638\u0627\u0645 \u0627\u0644\u062a\u0623\u0631\u064a\u0636\u060c \u0648\u0639\u0644\u0627\u0645\u0629 TR\u060c \u0648\u0634\u0647\u0627\u062f\u0629 UL 498\u060c \u0648\u0639\u0645\u0642 \u0627\u0644\u0635\u0646\u062f\u0648\u0642\u060c \u0648\u0645\u0642\u0628\u0633 \u0627\u0644\u062c\u0647\u0627\u0632.<\/p>\n

\u064a\u062c\u0645\u0639 \u0645\u0642\u0628\u0633 20 \u0627\u0644\u0645\u0642\u0627\u0648\u0645 \u0644\u0644\u0639\u0628\u062b \u0628\u064a\u0646 \u062b\u0644\u0627\u062b \u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0645\u0633\u062a\u0642\u0644\u0629: \u0627\u0644\u0633\u0639\u0629 \u0627\u0644\u062d\u0627\u0644\u064a\u0629\u060c \u0648\u0627\u0644\u062c\u0647\u062f\/\u0627\u0644\u062a\u0643\u0648\u064a\u0646\u060c \u0648\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u063a\u0637\u0627\u0621. \u064a\u064f\u0648\u062d\u0650\u0651\u062f NEMA WD 6 \u0627\u0644\u0648\u0627\u062c\u0647\u0629\u060c \u0628\u064a\u0646\u0645\u0627 \u064a\u062a\u0646\u0627\u0648\u0644 UL 498 \u0633\u0644\u0627\u0645\u0629 \u0627\u0644\u0645\u0642\u0627\u0628\u0633 \u0648\u0645\u0642\u0627\u0648\u0645\u062a\u0647\u0627 \u0644\u0644\u0639\u0628\u062b\u060c \u0648\u062a\u062d\u0643\u0645 \u0645\u0648\u0627\u062f NEC 210 \u0648406 \u0641\u064a \u0627\u0644\u062a\u0631\u0643\u064a\u0628. \u062a\u0628\u0642\u0649 \u0639\u0628\u0627\u0631\u0629 \u201c\u0645\u0642\u0628\u0633 20\u201d \u0648\u062d\u062f\u0647\u0627 \u063a\u064a\u0631 \u0645\u0643\u062a\u0645\u0644\u0629 \u0644\u0623\u0646 \u0623\u062c\u0647\u0632\u0629 5-20R \u06486-20R \u062a\u062e\u062f\u0645 \u0623\u0646\u0638\u0645\u0629 \u062c\u0647\u062f \u0645\u062e\u062a\u0644\u0641\u0629 \u0648\u0639\u0627\u0626\u0644\u0627\u062a \u0645\u0642\u0627\u0628\u0633 \u0645\u062e\u062a\u0644\u0641\u0629.<\/p>\n

\"NEMA
NEMA 5-20R and 6-20R can both carry 20 A markings, but their blade geometry and voltage class are deliberately different.<\/figcaption><\/figure>\n

What Does 20 A, 250 V Mean?<\/h2>\n

The 20 A value is the receptacle\u2019s current rating; 250 V is its voltage class, not a promise that every circuit measures exactly 250.0 V. In a typical U.S. 120\/240 V split-phase system, the receptacle supplies about 240 V line to line. A NEMA 6-20R accepts the intended 6-series plugs and normally provides two ungrounded contacts plus equipment ground. It does not provide a neutral for 120 V loads.<\/p>\n

How Is It Different from a 20 A, 125 V Outlet?<\/h2>\n

A NEMA 5-20R is rated 20 A, 125 V and uses line, neutral, and ground; a NEMA 6-20R is rated 20 A, 250 V and uses two ungrounded conductors plus ground. Both may have T-slot geometry, but the slot orientation prevents cross-connection. Changing the receptacle face does not convert circuit voltage. The breaker, conductors, source, grounding, and equipment nameplate must already form the correct system.<\/p>\n

What Branch Circuit Is Normally Required?<\/h2>\n

A 20 A circuit commonly uses 12 AWG copper conductors, subject to insulation type, ambient temperature, derating, terminal ratings, and local code. A 240 V U.S. circuit generally uses a common-trip two-pole breaker and an equipment grounding conductor. NEC 210.21 links receptacle rating to branch-circuit rating, while NEC 240 and 250 govern overcurrent protection and grounding. Manufacturer torque and conductor range remain mandatory.<\/p>\n

How Does a 20 Amp Tamper Resistant Outlet Change the Device?<\/h2>\n

Internal shutters resist access through a single blade opening and move when the intended plug blades enter together. The TR feature does not change voltage, interrupt ground faults, or make an indoor device weather resistant. If the adopted NEC requires tamper-resistant receptacles for the occupancy, the exact 250 V model must carry the relevant marking and listing evidence; a separate outlet cover is not equivalent to integral shutters.<\/p>\n

\u0623\u064a\u0646 \u062a\u0638\u0647\u0631 \u0627\u0644\u062a\u0643\u0627\u0644\u064a\u0641 \u0627\u0644\u0643\u0627\u0645\u0646\u0629\u061f<\/h2>\n

If 60 workshop points are ordered in the wrong NEMA configuration and each correction takes 0.5 labor-hour at USD 50, labor reaches USD 1,500 before new devices, lockout time, and equipment delay. Over-specifying TR where it is not required may add modest first cost, but ordering the wrong voltage class can damage equipment and force circuit redesign.<\/p>\n

20 A Receptacle Comparison<\/h2>\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0627\u0628\u0639\u0627\u062f<\/th>\n\u0646\u064a\u0645\u0627 5-20R<\/th>\n\u0646\u064a\u0645\u0627 6-20R<\/th>\nNEMA 6-20R TR<\/th>\n<\/tr>\n<\/thead>\n
Nominal use<\/td>\n120 \u0641\u0648\u0644\u062a<\/td>\n240 V<\/td>\n240 V with shutters<\/td>\n<\/tr>\n
Voltage rating<\/td>\n125 V<\/td>\n250 V<\/td>\n250 V<\/td>\n<\/tr>\n
Circuit conductors<\/td>\nLine, neutral, ground<\/td>\nTwo lines, ground<\/td>\nTwo lines, ground<\/td>\n<\/tr>\n
Accepts 5-20 plug<\/td>\n\u0646\u0639\u0645<\/td>\n\u0644\u0627<\/td>\n\u0644\u0627<\/td>\n<\/tr>\n
Tamper shutters<\/td>\nModel-dependent<\/td>\nModel-dependent<\/td>\n\u0646\u0639\u0645<\/td>\n<\/tr>\n
\u0627\u0644\u062a\u0637\u0628\u064a\u0642 \u0627\u0644\u0646\u0645\u0648\u0630\u062c\u064a<\/td>\nGeneral 20 A loads<\/td>\nDedicated 240 V equipment<\/td>\n240 V equipment where TR applies<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\"20
Approval should reconcile the equipment plug, two-pole circuit, conductor schedule, grounding path, box, shutters, and listing.<\/figcaption><\/figure>\n

\u0645\u0635\u0641\u0648\u0641\u0629 \u0627\u0644\u0637\u0644\u0628\u0627\u062a<\/h2>\n\n\n\n\n\n\n\n\n
Equipment example<\/th>\nPossible supply<\/th>\nKey nameplate check<\/th>\n\u0644\u0627 \u062a\u062a\u0635\u0631\u0641 \u0639\u0644\u0649 \u0623\u0633\u0627\u0633 \u0627\u0641\u062a\u0631\u0627\u0636<\/th>\n<\/tr>\n<\/thead>\n
Air conditioner<\/td>\n208\/230\/240 V<\/td>\nMCA, MOCP, plug type<\/td>\n6-20R always permitted<\/td>\n<\/tr>\n
Workshop tool<\/td>\n240 V, 20 A branch<\/td>\nFull-load current and duty<\/td>\nNeutral is available<\/td>\n<\/tr>\n
Commercial equipment<\/td>\n208 or 240 V<\/td>\nPhase and frequency<\/td>\n208 V equals 240 V<\/td>\n<\/tr>\n
Residential general outlet<\/td>\n120 \u0641\u0648\u0644\u062a<\/td>\nRequired plug and load<\/td>\n6-20R is an upgrade<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0648\u0627\u0644\u0627\u0645\u062a\u062b\u0627\u0644<\/h2>\n