[{"data":1,"prerenderedAt":71},["ShallowReactive",2],{"guide-ev-charging-without-service-upgrade-zh-Hant":3},{"guide":4,"related":53},{"title":5,"seoTitle":6,"description":7,"summary":8,"sections":9,"faq":25,"cta":32,"date":34,"updated":35,"service":36,"order":37,"sources":38,"slug":51,"locale":52},"毋須昂貴供電升級的電動車充電方案","電動車充電器免升級供電方案","負載分配、CT 夾動態負載管理、乾衣機插座共用裝置及合適電流的充電器：紐約市及長島毋須升級供電即可安裝充電器的方案。","全面升級供電的費用可能比充電器更高，電力公司排期亦需時數星期。不少住宅及樓宇可採用負載管理、共用電路或較低電流的充電器，從而免去升級。哪個方案安全可行，須以負荷計算確定。",[10,14,21],{"heading":11,"paragraphs":12},"先進行負荷計算",[13],"持牌電工會把家中用電高峰時的總需量相加，[與供電容量比較](\u002Fguides\u002Fny-electrical-service-size-100a-200a)，從而得知有多少容量可分配給充電器，結果往往比業主預期的多。",{"heading":15,"list":16},"免升級的方案",[17,18,19,20],"[電流感應器（CT 夾）動態負載分配](https:\u002F\u002Fwww.tesla.com\u002Fsupport\u002Fcharging\u002Fwall-connector\u002Fpower-management)：充電器監測全屋用電，家中用電量高時自動降低充電功率，用電回落後再回升。","共用乾衣機電路：採用經認證的電路共用裝置，在乾衣機停用時讓現有 30 安培、240 伏特乾衣機電路為電動車充電，並以乾衣機優先。充電電流以 24 安培（約 5.7 kW）為上限，每小時仍可增加約 [15 至 20 英里續航](https:\u002F\u002Fwww.psegliny.com\u002Fsaveenergyandmoney\u002Fgreenenergy\u002Fev\u002Fbasics\u002Fchargingbasics)。插座必須為有接地的 NEMA 14-30；舊式三線 10-30 插座須先行更換。NEC 625.40 規定電動車插座須設獨立分支電路，因此共用電路能否獲接納由檢驗人員酌情決定；我們會先向檢驗機構確認，才建議採用此方案。","調低充電電流：[24 至 32 安培已足夠大部分車輛過夜充滿](https:\u002F\u002Fafdc.energy.gov\u002Ffuels\u002Felectricity-charging-home)。","樓宇動態負載管理：多台充電器共用一個容量上限，按車輛需求分配電力。",{"heading":22,"paragraphs":23},"何時應該升級供電",[24],"如供電只有 60 或 100 安培且已接近上限，或同時加裝熱泵、電磁爐及電動車充電器，[升級供電通常是更划算的投資](\u002Fguides\u002Felectrical-panel-upgrade)。在這種情況下，我們會為兩種方案分別報價，供您比較。",[26,29],{"q":27,"a":28},"乾衣機電路共用裝置是否獲准使用？","視乎情況。裝置必須經認證，電路必須為有接地的 30 安培乾衣機電路，而充電電流以 24 安培為上限。由於電氣規範要求電動車插座設獨立分支電路，我們會先向檢驗人員確認可獲接納，才建議採用此方案。未經認證的插頭式分插器並不安全。",{"q":30,"a":31},"負載管理會否減慢充電速度？","只有在家中同時大量用電時才會。過夜充電，大部分車輛仍可充滿。",{"text":33},"請提供電箱及電錶的相片、車款，以及最近一期電費單。我們將提供免費書面估價，為免升級方案與供電升級並列報價。負荷計算屬於簽約工程的一部分。","2026-10-24","2026-10-25","ev-charging",3,[39,43,47],{"title":40,"url":41,"publisher":42},"Wall Connector Power Management","https:\u002F\u002Fwww.tesla.com\u002Fsupport\u002Fcharging\u002Fwall-connector\u002Fpower-management","Tesla",{"title":44,"url":45,"publisher":46},"EV Charging","https:\u002F\u002Fwww.psegliny.com\u002Fsaveenergyandmoney\u002Fgreenenergy\u002Fev\u002Fbasics\u002Fchargingbasics","PSEG Long Island",{"title":48,"url":49,"publisher":50},"Charging Electric Vehicles at Home","https:\u002F\u002Fafdc.energy.gov\u002Ffuels\u002Felectricity-charging-home","U.S. Department of Energy, Alternative Fuels Data Center","ev-charging-without-service-upgrade","zh-Hant",[54,58,62,66],{"slug":55,"title":56,"description":57,"service":36,"date":34,"updated":35},"ev-charger-installation","在紐約市及長島安裝家用電動車充電器","第一級與第二級充電的分別、電箱容量、許可證、Tesla Powershare，以及紐約市及長島住宅和樓宇的安裝須知。",{"slug":59,"title":60,"description":61,"service":36,"date":34,"updated":35},"tesla-powershare-home-backup","以 Tesla Powershare 作為家居後備電源","Tesla Powershare 車輛對住宅（V2H）後備供電所需的設備、與普通充電器的分別，以及紐約市及長島所需的許可證。",{"slug":63,"title":64,"description":65,"service":36,"date":35,"updated":35},"ev-buyer-home-electrical-checklist","購買電動車前的家居電路檢查","在紐約市或長島購買電動車前，按車載充電機選擇充電器、確定電路規格，並確認車輛是否支援家居後備電源。",{"slug":67,"title":68,"description":69,"service":36,"date":35,"updated":70},"ev-home-backup-v2h-new-york","以電動車為紐約住宅提供停電後備電源","V2L、V2H 與 V2G 的分別、各品牌所需設備、電動車可為紐約市及長島住宅供電多久，以及與家用儲能電池的比較。","2026-10-26",1793066389859]