{"product_id":"enphase-200a-ct-clamp-for-25mm-meter-tails-ct-200-clamp","title":"Enphase 200A CT Clamp for 25mm Meter Tails - CT-200-CLAMP","description":"\u003cdiv style=\"font-size:16px; max-width:900px; font-family:Arial,Helvetica,sans-serif; color:#222; line-height:1.6;\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eEnphase 200A CT Clamp\u003c\/strong\u003e (model \u003cstrong\u003eCT-200-CLAMP\u003c\/strong\u003e, also known as \u003cstrong\u003eCT-100-SPLIT\u003c\/strong\u003e \/ \u003cstrong\u003eEN-CT-100-SPLIT\u003c\/strong\u003e) is a \u003cstrong\u003esplit-core current transformer\u003c\/strong\u003e designed for whole-home consumption monitoring in Enphase IQ systems. Compatible with the \u003cstrong\u003eEnphase IQ Gateway Metered\u003c\/strong\u003e and \u003cstrong\u003eIQ Combiner\u003c\/strong\u003e products, a \u003cstrong\u003epair of these CTs\u003c\/strong\u003e provides accurate real-time consumption data visible in the \u003cstrong\u003eEnphase App\u003c\/strong\u003e. This model is rated for up to \u003cstrong\u003e200A primary current\u003c\/strong\u003e and is specifically sized for properties with \u003cstrong\u003e25mm² meter tails\u003c\/strong\u003e (up to 50mm² cable OD), which are typical of UK properties with a 200A incoming supply. Accuracy is within \u003cstrong\u003e±1%\u003c\/strong\u003e, certified to \u003cstrong\u003eUL2808\u003c\/strong\u003e with service entrance rating.\u003c\/p\u003e\n\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:12px; margin:20px 0;\"\u003e\n  \u003cdiv style=\"background:#008377CF; color:#fff; border-radius:6px; padding:14px 22px; text-align:center; min-width:140px;\"\u003e\n    \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003e200A\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px; margin-top:4px;\"\u003eMax Primary Current\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF; color:#fff; border-radius:6px; padding:14px 22px; text-align:center; min-width:140px;\"\u003e\n    \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003e\u0026lt;1%\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px; margin-top:4px;\"\u003eMetering Accuracy\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF; color:#fff; border-radius:6px; padding:14px 22px; text-align:center; min-width:140px;\"\u003e\n    \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003eSplit-Core\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px; margin-top:4px;\"\u003eClamp-On Design\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF; color:#fff; border-radius:6px; padding:14px 22px; text-align:center; min-width:140px;\"\u003e\n    \u003cdiv style=\"font-size:22px; font-weight:bold;\"\u003e-40 to +85°C\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px; margin-top:4px;\"\u003eOperating Temperature\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"border-left:4px solid #e53e3e; background:#fff5f5; padding:14px 18px; margin:20px 0; border-radius:4px;\"\u003e\n  \u003cstrong style=\"color:#e53e3e;\"\u003e⚠ Electrical Safety — Qualified Installers Only:\u003c\/strong\u003e Installation of CT clamps must be carried out by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e. Always \u003cstrong\u003ede-energise the main load panel and the PV system\u003c\/strong\u003e before installing CTs. Never install CTs while current is flowing in the sensed circuit. Always connect CT wires to the IQ Gateway terminal block \u003cstrong\u003ebefore\u003c\/strong\u003e energising the sensed circuit. Risk of electric shock if procedures are not followed.\n\u003c\/div\u003e\n\n\u003cdiv style=\"border-left:4px solid #f6ad55; background:#fffaf0; padding:14px 18px; margin:20px 0; border-radius:4px;\"\u003e\n  \u003cstrong style=\"color:#b7791f;\"\u003e⚠ Arrow Orientation Critical:\u003c\/strong\u003e Each CT must be installed with its \u003cstrong\u003edirectional arrow pointing toward the load (away from the grid)\u003c\/strong\u003e. Incorrect orientation will result in incorrect consumption readings and may affect system behaviour.\n\u003c\/div\u003e\n\n\u003cdiv style=\"border-left:4px solid #008377; background:#e6f4f3; padding:14px 18px; margin:20px 0; border-radius:4px;\"\u003e\n  \u003cstrong style=\"color:#008377;\"\u003eℹ Phase Matching:\u003c\/strong\u003e When installing for two-phase consumption monitoring, ensure the CT on each phase is connected to the matching C1 or C2 terminal on the IQ Gateway. Always verify phase assignment using a multimeter if wire colour coding is ambiguous — do not rely solely on wire colour.\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:16px; margin:24px 0;\"\u003e\n\n  \u003cdiv style=\"border:2px solid #008377; border-radius:8px; padding:18px;\"\u003e\n    \u003cdiv style=\"font-size:15px; font-weight:bold; color:#008377; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:10px;\"\u003eSplit-Core Clamp Design\u003c\/div\u003e\n    \u003cp\u003eThe \u003cstrong\u003esplit-core (clamp-on) design\u003c\/strong\u003e allows the CT to be installed around existing meter tail conductors without disconnecting the cables. The core opens and closes around the conductor, significantly reducing installation time compared to solid-core CTs and avoiding the need to break the supply circuit beyond the normal de-energisation process.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"border:2px solid #008377; border-radius:8px; padding:18px;\"\u003e\n    \u003cdiv style=\"font-size:15px; font-weight:bold; color:#008377; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:10px;\"\u003ePollution Degree 3 Rated\u003c\/div\u003e\n    \u003cp\u003eRated at \u003cstrong\u003ePollution Degree 3\u003c\/strong\u003e, these CTs can be installed inside electrical equipment in both \u003cstrong\u003eresidential and harsh industrial environments\u003c\/strong\u003e. This rating covers environments where conductive pollution may occur — making them suitable for consumer units, distribution boards, and commercial service panels.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"border:2px solid #008377; border-radius:8px; padding:18px;\"\u003e\n    \u003cdiv style=\"font-size:15px; font-weight:bold; color:#008377; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:10px;\"\u003eEnabling Home Energy Management\u003c\/div\u003e\n    \u003cp\u003eWhen a pair of CT clamps is installed and connected to the IQ Gateway Metered, the Enphase App gains \u003cstrong\u003ereal-time whole-home consumption monitoring\u003c\/strong\u003e. This allows homeowners and installers to see exactly how much energy the property is consuming, how much the solar system is generating, and how much is being exported or imported from the grid.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"border:2px solid #008377; border-radius:8px; padding:18px;\"\u003e\n    \u003cdiv style=\"font-size:15px; font-weight:bold; color:#008377; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:10px;\"\u003eMultiple Conductor Support\u003c\/div\u003e\n    \u003cp\u003eWhere necessary, the CT aperture can accommodate \u003cstrong\u003emultiple same-phase conductors bundled together\u003c\/strong\u003e, provided all conductors are on the same phase and physically fit within the aperture. This is useful in installations with multiple incoming conductors or parallel-connected service feeds.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003ctable style=\"width:100%; border-collapse:collapse; font-size:15px; margin:24px 0;\"\u003e\n  \u003cthead\u003e\n    \u003ctr style=\"background:#008377; color:#fff;\"\u003e\n      \u003cth style=\"padding:10px 14px; text-align:left;\" colspan=\"2\"\u003eTechnical Specifications — Enphase CT-200-CLAMP\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"background:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:9px 14px; font-weight:bold;\"\u003eModel Number\u003c\/td\u003e\n      \u003ctd style=\"padding:9px 14px;\"\u003eCT-200-CLAMP (also referred to as CT-100-SPLIT \/ EN-CT-100-SPLIT)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:9px 14px; font-weight:bold;\"\u003eCT Type\u003c\/td\u003e\n      \u003ctd style=\"padding:9px 14px;\"\u003eSplit-core clamp (clamp-on)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:9px 14px; font-weight:bold;\"\u003eAccuracy\u003c\/td\u003e\n      \u003ctd style=\"padding:9px 14px;\"\u003e\u0026lt;1% (±1%)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:9px 14px; font-weight:bold;\"\u003eMax Primary Current\u003c\/td\u003e\n      \u003ctd style=\"padding:9px 14px;\"\u003e200A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:9px 14px; font-weight:bold;\"\u003eTurns Ratio\u003c\/td\u003e\n      \u003ctd style=\"padding:9px 14px;\"\u003e2400\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:9px 14px; font-weight:bold;\"\u003ePrimary Voltage\u003c\/td\u003e\n      \u003ctd style=\"padding:9px 14px;\"\u003e250VAC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:9px 14px; font-weight:bold;\"\u003eFrequency\u003c\/td\u003e\n      \u003ctd style=\"padding:9px 14px;\"\u003e50–60 Hz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:9px 14px; font-weight:bold;\"\u003eConductor Aperture Diameter\u003c\/td\u003e\n      \u003ctd style=\"padding:9px 14px;\"\u003e0.87 in (approx. 22 mm) — suitable for meter tails up to 50mm²\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:9px 14px; font-weight:bold;\"\u003ePhysical Dimensions\u003c\/td\u003e\n      \u003ctd style=\"padding:9px 14px;\"\u003e2.75 × 2.12 × 0.61 in (approx. 70 × 54 × 15.5 mm)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:9px 14px; font-weight:bold;\"\u003eOperating Temperature\u003c\/td\u003e\n      \u003ctd style=\"padding:9px 14px;\"\u003e-40°C to +85°C\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:9px 14px; font-weight:bold;\"\u003eHumidity\u003c\/td\u003e\n      \u003ctd style=\"padding:9px 14px;\"\u003eUp to 95%\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:9px 14px; font-weight:bold;\"\u003ePollution Degree\u003c\/td\u003e\n      \u003ctd style=\"padding:9px 14px;\"\u003e3\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#e6f4f3;\"\u003e\n      \u003ctd style=\"padding:9px 14px; font-weight:bold;\"\u003eCompliance\u003c\/td\u003e\n      \u003ctd style=\"padding:9px 14px;\"\u003eUL2808 (service entrance rated), RoHS\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:9px 14px; font-weight:bold;\"\u003eCompatible With\u003c\/td\u003e\n      \u003ctd style=\"padding:9px 14px;\"\u003eEnphase IQ Gateway Metered, IQ Combiner (with PCBA), Envoy-S Metered\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cdiv style=\"margin:24px 0;\"\u003e\n  \u003cdetails style=\"border:1px solid #008377; border-radius:6px; margin-bottom:10px;\"\u003e\n    \u003csummary style=\"background:#008377CF; color:#fff; padding:12px 16px; cursor:pointer; font-weight:bold; border-radius:5px;\"\u003eHow many CT clamps do I need for a standard residential installation?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;\"\u003e\n      A standard single-phase UK residential installation requires \u003cstrong\u003eone CT clamp per live conductor\u003c\/strong\u003e you wish to monitor. For whole-home consumption monitoring you typically need \u003cstrong\u003etwo CTs\u003c\/strong\u003e — one for each line (L1 and L2 in North American terminology; UK single-phase properties have one live conductor, so may require just one, but confirm with the IQ Gateway installation guide for your specific configuration).\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n  \u003cdetails style=\"border:1px solid #008377; border-radius:6px; margin-bottom:10px;\"\u003e\n    \u003csummary style=\"background:#008377CF; color:#fff; padding:12px 16px; cursor:pointer; font-weight:bold; border-radius:5px;\"\u003eDo I need this CT for a three-phase Enphase installation?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;\"\u003e\n      For three-phase UK installations, \u003cstrong\u003eone CT per phase\u003c\/strong\u003e is required for consumption monitoring. This CT is sized for 200A meter tails (up to 50mm² cable). Confirm with the Enphase 3-phase IQ Gateway installation guide for exact CT placement requirements on your specific switchgear.\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n  \u003cdetails style=\"border:1px solid #008377; border-radius:6px; margin-bottom:10px;\"\u003e\n    \u003csummary style=\"background:#008377CF; color:#fff; padding:12px 16px; cursor:pointer; font-weight:bold; border-radius:5px;\"\u003eWill this CT fit standard UK 25mm² meter tails?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;\"\u003e\n      Yes. The CT aperture is rated for conductor cables up to \u003cstrong\u003e50mm²\u003c\/strong\u003e, making it suitable for standard UK 25mm² meter tails as well as heavier gauges up to 50mm². It is the recommended CT for properties with a \u003cstrong\u003e200A incoming supply\u003c\/strong\u003e.\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n  \u003cdetails style=\"border:1px solid #008377; border-radius:6px; margin-bottom:10px;\"\u003e\n    \u003csummary style=\"background:#008377CF; color:#fff; padding:12px 16px; cursor:pointer; font-weight:bold; border-radius:5px;\"\u003eCan the CT be installed without interrupting the power supply?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;\"\u003e\n      The split-core design allows the CT to be \u003cstrong\u003eclamped around the conductor without disconnecting the cable\u003c\/strong\u003e. However, \u003cstrong\u003ethe panel must be de-energised\u003c\/strong\u003e before connecting the CT wires to the IQ Gateway terminal block. A qualified electrician must assess whether de-energisation requires the DNO to be involved depending on the meter arrangement.\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Enphase","offers":[{"title":"Default Title","offer_id":64997086495069,"sku":"EN-CT-200-CLAMP","price":23.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Enphase200ACTClampfor25mmMeterTails.jpg?v=1781700275","url":"https:\/\/qualityheating.co.uk\/products\/enphase-200a-ct-clamp-for-25mm-meter-tails-ct-200-clamp","provider":"AIZO Quality Heating","version":"1.0","type":"link"}