{"id":7893,"date":"2026-07-29T17:55:00","date_gmt":"2026-07-29T21:55:00","guid":{"rendered":"https:\/\/groupequenneville.com\/?p=7893"},"modified":"2026-08-03T21:31:15","modified_gmt":"2026-08-04T01:31:15","slug":"upgrading-electrical-panel-100-to-200-amps","status":"publish","type":"post","link":"https:\/\/groupequenneville.com\/en\/upgrading-electrical-panel-100-to-200-amps\/","title":{"rendered":"Upgrading from 100 to 200 amps: when your panel is too small"},"content":{"rendered":"\n<div class=\"gqp\"><style>.gqp{--forest:#1F3D2B;--sage:#6B9A5B;--sage-soft:#E8F0E4;--paper:#F1F1EF;--ink:#1d1d1f;--muted:#6e6e73;--line:#e3e3e0;--heat:#C2562F;--heat-soft:#FBE8E0;font-family:-apple-system,BlinkMacSystemFont,\"SF Pro Display\",\"Helvetica Neue\",Arial,sans-serif;color:var(--ink);background:#fff;color-scheme:light;-webkit-font-smoothing:antialiased;line-height:1.5}.gqp *{box-sizing:border-box}.gqp .wrap{max-width:1080px;margin:0 auto;padding:0 24px}.gqp .narrow{max-width:720px;margin:0 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.lbl{font-size:14.5px;color:var(--muted);margin-top:6px}.gqp .ghl{max-width:640px;margin:32px auto 0;background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px 20px}.gqp .final{background:radial-gradient(120% 140% at 50% 0%,#24462f,#16301f 70%);color:#fff;text-align:center;padding:86px 0;border-radius:34px;margin:22px 16px}.gqp .final h2{color:#fff}.gqp .final .lead{color:#cddbc7;max-width:600px;margin:16px auto 0}.gqp .contact{display:flex;gap:30px;justify-content:center;flex-wrap:wrap;margin-top:28px;font-size:17px}.gqp .contact a{color:#fff;text-decoration:none;font-weight:600}.gqp .faq details{border-top:1px solid var(--line);padding:20px 4px}.gqp .faq details:last-child{border-bottom:1px solid var(--line)}.gqp .faq summary{font-size:18px;font-weight:650;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:14px;color:var(--forest)}.gqp .faq summary::-webkit-details-marker{display:none}.gqp .faq p{margin-top:12px;font-size:16px}.gqp .foot{padding:36px 0;text-align:center;color:var(--muted);font-size:14px;border-top:1px solid var(--line)}.gqp .src{font-size:12.5px;color:#9a9a9a;max-width:760px;margin:14px auto 0}.gqp ul.clean{margin:16px 0 0;padding:0;list-style:none}.gqp ul.clean li{font-size:16.5px;padding:9px 0 9px 30px;position:relative;border-top:1px solid var(--line)}.gqp ul.clean li:before{content:\"\u2713\";position:absolute;left:2px;color:var(--sage);font-weight:800}.gqp .note{background:var(--sage-soft);border-radius:16px;padding:20px 22px;margin-top:24px;font-size:16.5px;color:#2c2c2e}.gqp .note b{color:var(--forest)}@media(max-width:760px){.gqp .grid-2,.gqp .grid-3,.gqp .stats{grid-template-columns:1fr}.gqp .section{padding:58px 0}}<\/style><header class=\"hero\"><div class=\"wrap\"><div class=\"badge\"><span class=\"dot\"><\/span>Residential \u00b7 Commercial \u00b7 Industrial \u2014 Montr\u00e9al, Laval &amp; North Shore<\/div>\n<p class=\"lead\">EV charger, spa, heat pump, addition\u2026 Is your 100 A service still enough? Here&#8217;s how to know, what&#8217;s involved, and what to budget \u2014 no surprises.<\/p>\n<div class=\"cta-row\"><a class=\"btn btn-p\" href=\"#soumission\">Request a free quote \u2192<\/a><a class=\"btn btn-g\" href=\"tel:5145031353\">514-503-1353<\/a><\/div><\/div><\/header>\n<section class=\"section\"><div class=\"wrap narrow center\"><span class=\"kicker\">The context<\/span><h2 style=\"margin:14px 0 18px\">Our homes use more power than ever<\/h2>\n<p>Many Quebec homes still have a 100-amp electrical service, sized for the needs of 30 or 40 years ago. Today we plug in EV chargers, spas, heat pumps and power-hungry kitchens. And frankly, when we walk into a house with a 100 A panel, it&#8217;s usually an old panel installed back in the day \u2014 often at the end of its useful life.<\/p><\/div><\/section>\n<section class=\"section band\"><div class=\"wrap\"><div class=\"narrow center\"><span class=\"kicker\">Watch for<\/span><h2 style=\"margin:14px 0 8px\">The signs 100 A is no longer enough<\/h2><\/div>\n<div class=\"grid-3\"><div class=\"card\"><div class=\"num\">1<\/div><h3>A fuse panel or a rusty service entrance<\/h3><p>A fuse panel, or a rusting mast and service entrance, betray the age of the installation. It&#8217;s often the sign it&#8217;s time to modernize.<\/p><\/div>\n<div class=\"card\"><div class=\"num\">2<\/div><h3>Breakers that trip<\/h3><p>The main breaker or circuits trip when several appliances run at the same time.<\/p><\/div>\n<div class=\"card\"><div class=\"num\">3<\/div><h3>A full panel<\/h3><p>No room left to add a circuit \u2014 or &#8220;half-breakers&#8221; everywhere to squeeze out space.<\/p><\/div><\/div><\/div><\/section>\n<section class=\"section\"><div class=\"wrap narrow\"><span class=\"kicker\">The triggers<\/span><h2 style=\"margin:14px 0 12px\">The projects that (almost) always force an upgrade<\/h2>\n<p>Some additions demand so much power that they generally require increasing the service capacity:<\/p>\n<ul class=\"clean\"><li><strong>A spa<\/strong> \u2014 the most frequent trigger.<\/li><li><strong>A pool with an electric heater<\/strong><\/li><li><strong>An EV charging station<\/strong><\/li><\/ul>\n<div class=\"note\"><b>A heat pump?<\/b> Not always. It depends on the load already present in the house. That&#8217;s exactly what a load calculation is for: measuring precisely before deciding.<\/div><\/div><\/section>\n<section class=\"section band\"><div class=\"wrap narrow\"><span class=\"kicker\">In practice<\/span><h2 style=\"margin:14px 0 14px\">How long, and how much<\/h2>\n<p>In most homes, the upgrade is done in <strong>one day, with two electricians<\/strong>. You&#8217;re without power for the duration \u2014 that day. And above all: <strong>we handle Hydro-Qu\u00e9bec 100%<\/strong> (the request, coordination, reconnection and seal). Nothing for you to manage there.<\/p>\n<div class=\"price\"><div class=\"pc\"><div class=\"big\">$3,500 \u2013 $7,000<\/div><div class=\"lbl\">Realistic 2026 range, installed<\/div><\/div><div class=\"pc\"><div class=\"big\">1 day<\/div><div class=\"lbl\">2 electricians \u00b7 power off for the day<\/div><\/div><\/div>\n<p style=\"margin-top:22px;font-size:16px;color:var(--muted)\">What moves the price: the condition and type of service entrance (overhead or underground), distance, a mast to replace, and corrections found once the panel is open.<\/p>\n<ul class=\"clean\" style=\"margin-top:24px\"><li>Load calculation and feasibility check<\/li><li>New 200 A panel and service entrance<\/li><li>Full coordination with Hydro-Qu\u00e9bec<\/li><li>Grounding verified and corrected if needed<\/li><li>Tested re-energization, to CMEQ and RBQ standards<\/li><\/ul><\/div><\/section>\n<section class=\"section\"><div class=\"wrap narrow\"><span class=\"kicker\">An option worth knowing<\/span><h2 style=\"margin:14px 0 12px\">100 A + a load controller: when it&#8217;s a real solution<\/h2>\n<p>A load controller (load-shedding device) spreads out demand to avoid exceeding capacity \u2014 which can, in some cases, avoid a full upgrade. But let&#8217;s be honest, it depends on the need:<\/p>\n<ul class=\"clean\"><li><strong>For an EV charger:<\/strong> yes, a load controller works very well and often lets you keep 100 A.<\/li><li><strong>For the rest<\/strong> (spa, kitchen, major additions): it&#8217;s generally not recommended.<\/li><\/ul>\n<div class=\"note\">And it has to be said: a 100 A panel is often already old. In that case, it&#8217;s better to replace it than to keep patching it. We advise based on your real situation \u2014 not the biggest sale.<\/div><\/div><\/section>\n<section class=\"section band\"><div class=\"wrap narrow\"><span class=\"kicker\">While the panel is open<\/span><h2 style=\"margin:14px 0 12px\">What&#8217;s worth doing (and what isn&#8217;t)<\/h2>\n<p>Installing a new panel is the right moment to improve a few things \u2014 but not blindly:<\/p>\n<ul class=\"clean\"><li><strong>Surge protector:<\/strong> an excellent idea at installation, to protect your appliances against surges.<\/li><li><strong>Grounding:<\/strong> we check it systematically and correct it if necessary.<\/li><\/ul>\n<div class=\"note\"><b>What about GFCI (shock) and AFCI (arc\/fire) breakers?<\/b> In an older home, circuits are often &#8220;mixed.&#8221; Adding these breakers blindly would cause nuisance tripping \u2014 more trouble than benefit. So we evaluate case by case rather than installing them across the board.<\/div><\/div><\/section>\n<section class=\"section band-green\"><div class=\"wrap\"><div class=\"narrow center\"><span class=\"kicker\">Why Groupe Quenneville<\/span><h2 style=\"margin:14px 0 14px\">A service entrance done by the book<\/h2>\n<p>A residential, commercial and industrial electrical company \u2014 <strong>CMEQ-certified and holder of an RBQ licence<\/strong> \u2014 serving Greater Montr\u00e9al, <a href=\"https:\/\/groupequenneville.com\/electricien-laval\/\">Laval<\/a>, the North Shore, the Laurentians and Lanaudi\u00e8re. We calculate, we coordinate Hydro-Qu\u00e9bec, and we guarantee the work.<\/p><\/div>\n<div class=\"stats\"><div class=\"stat\"><div class=\"stars\">\u2605\u2605\u2605\u2605\u2605<\/div><div class=\"cap\">4.9 \/ 5 \u2014 249+ Google reviews<\/div><\/div><div class=\"stat\"><div class=\"big\">CMEQ<span style=\"font-size:19px\"> \u00b7 RBQ<\/span><\/div><div class=\"cap\">Certified company<\/div><\/div><div class=\"stat\"><div class=\"big\">5 yrs<\/div><div class=\"cap\">Warranty \u00b7 $5M insurance<\/div><\/div><\/div><\/div><\/section>\n<section class=\"final\" id=\"soumission\"><div class=\"wrap\"><span class=\"kicker\" style=\"color:#9Fc48c\">Take action<\/span><h2 style=\"margin:14px 0 4px\">Is your panel ready for your projects?<\/h2>\n<p class=\"lead\">We calculate your load and tell you straight whether 100 A is enough or it&#8217;s time for 200 A. Free quote.<\/p>\n<div class=\"cta-row\" style=\"margin-top:30px\"><a class=\"btn btn-p\" style=\"background:#fff;color:#1F3D2B\" href=\"tel:5145031353\">\ud83d\udcde Call an electrician<\/a><a class=\"btn btn-g\" style=\"background:transparent;color:#fff;border-color:#fff\" href=\"#form\">Request a quote<\/a><\/div>\n<div class=\"contact\"><a href=\"tel:5145031353\">\u260e 514-503-1353<\/a><a href=\"https:\/\/groupequenneville.com\" target=\"_blank\" rel=\"noopener\">\ud83c\udf10 groupequenneville.com<\/a><\/div>\n<div id=\"form\"><div class=\"ghl\"><iframe src=\"https:\/\/api.leadconnectorhq.com\/widget\/form\/eis7Ed6eoyBgcKjuLdtw\" style=\"width:100%;border:none;min-height:780px\" id=\"inline-eis7Ed6eoyBgcKjuLdtw\" data-layout=\"{'id':'INLINE'}\" data-trigger-type=\"alwaysShow\" data-form-name=\"Form EN\" data-height=\"780\" data-layout-iframe-id=\"inline-eis7Ed6eoyBgcKjuLdtw\" data-form-id=\"eis7Ed6eoyBgcKjuLdtw\" title=\"Form EN\"><\/iframe><\/div><\/div><\/div><\/section>\n<section class=\"section\"><div class=\"wrap narrow\"><div class=\"center\"><span class=\"kicker\">Frequently asked questions<\/span><h2 style=\"margin:14px 0 26px\">What homeowners ask us<\/h2><\/div>\n<div class=\"faq\"><details open><summary>How do I know if I have 100 or 200 amps?<span>+<\/span><\/summary><p>The main breaker at the top of the panel shows the amperage (100, 125, 200\u2026). If in doubt, our team checks it and performs a load calculation.<\/p><\/details>\n<details><summary>How long does the work take?<span>+<\/span><\/summary><p>In most homes, one day, with two electricians. You&#8217;re without power for the duration of the work \u2014 that day.<\/p><\/details>\n<details><summary>How much does upgrading to 200 A cost?<span>+<\/span><\/summary><p>Generally between $3,500 and $7,000 installed, depending on the condition and type of your service entrance. We handle all coordination with Hydro-Qu\u00e9bec.<\/p><\/details>\n<details><summary>Do I need 200 A just for an EV charger?<span>+<\/span><\/summary><p>Not necessarily. For a charger, a load controller often lets you keep a 100 A service. That said, if the panel is already old, replacing it is often the wiser move.<\/p><\/details>\n<details><summary>Who handles Hydro-Qu\u00e9bec and the permit?<span>+<\/span><\/summary><p>We do. The request, coordination, reconnection and seal with Hydro-Qu\u00e9bec are 100% handled by our team.<\/p><\/details><\/div><\/div><\/section>\n<footer class=\"foot\"><div class=\"wrap\"><p>Groupe Quenneville \u2014 Residential \u00b7 Commercial \u00b7 Industrial \u00b7 Montr\u00e9al, Laval &amp; North Shore<br>514-503-1353 \u00b7 groupequenneville.com<\/p>\n<p class=\"src\">Sources: <a href=\"https:\/\/www.cmeq.org\/\" target=\"_blank\" rel=\"noopener nofollow\">CMEQ<\/a> \u00b7 <a href=\"https:\/\/www.hydroquebec.com\/\" target=\"_blank\" rel=\"noopener nofollow\">Hydro-Qu\u00e9bec<\/a> \u00b7 <a href=\"https:\/\/www.rbq.gouv.qc.ca\/\" target=\"_blank\" rel=\"noopener nofollow\">RBQ<\/a>.<\/p><\/div><\/footer>\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"How do I know if I have 100 or 200 amps?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The main breaker at the top of the panel shows the amperage (100, 125, 200\u2026). If in doubt, an electrician checks it and performs a load calculation.\"}},{\"@type\":\"Question\",\"name\":\"How long does upgrading from 100 to 200 amps take?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"In most homes, one day with two electricians. You're without power for the duration of the work.\"}},{\"@type\":\"Question\",\"name\":\"How much does upgrading to 200 amps cost?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Generally between $3,500 and $7,000 installed, depending on the condition and type of service entrance. Groupe Quenneville handles all coordination with Hydro-Qu\u00e9bec.\"}},{\"@type\":\"Question\",\"name\":\"Do I need 200 amps just for an EV charger?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Not necessarily. A load controller often lets you keep a 100 A service for a charger. If the panel is already old, replacing it is often wiser.\"}},{\"@type\":\"Question\",\"name\":\"Who handles Hydro-Qu\u00e9bec and the permit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Groupe Quenneville. The request, coordination, reconnection and seal with Hydro-Qu\u00e9bec are fully handled.\"}}]}<\/script><script src=\"https:\/\/link.msgsndr.com\/js\/form_embed.js\"><\/script><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Upgrading from 100 to 200 amps: the real signs, the timeline (1 day), the price ($3,500-7,000), load controllers, and Hydro-Qu\u00e9bec coordination. 514-503-1353.<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[93],"tags":[],"class_list":["post-7893","post","type-post","status-publish","format-standard","hentry","category-advice"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Upgrading Your Electrical Panel to 200 Amps<\/title>\n<meta name=\"description\" content=\"EV charger, hot tub, heat pump: is your 100 A service enough? 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