/challenges-projects/design-challenges/in-the-air-design-challenge/b/blog/posts/carbon-footprint-monitoring---power-meter-ctHousehold energy consumption could be the highest contributor in one&#39;s carbon footprint. By measuring how much energy we consume each day we may be able to adjust our usage patterns to save. There are several ways to measure household...en-USTelligent Community 12https://community.element14.com/challenges-projects/design-challenges/in-the-air-design-challenge/b/blog/posts/carbon-footprint-monitoring---power-meter-ctTue, 10 Feb 2015 02:20:40 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:771fb0e4-bcae-49a8-af84-e00b227381e0mcb11<p>Christever</p><p>Your CT transformer does indeed allow measuring of mains voltages BUT care needs to be exercised to ensure it is safe.</p><p>&nbsp;</p><p>When these devices are mounted inside a switchboard, the secondary side wire is still inside the switchboard and is not usually rated for mains voltages.</p><p>It requires a mains rated sleeve or another method to ensure users aren&#39;t potentially exposed to hazardous voltages.</p><p>&nbsp;</p><p>I detailed one method here and discussed some of the pitfalls.</p><p><a class="jive-link-blog-small" href="/challengesprojects/design-challenges/forget-me-not/b/blog/posts/forget-me-not-eldermon-electrical">Forget Me Not :&nbsp; eLDERmon&nbsp; Electrical</a></p><p>&nbsp;</p><p>Rather than a physical network connection a WIFI or RF connection is probably the safest way to get the data out and keep everything inside and away from contact.</p><p>&nbsp;</p><p>&nbsp;</p><p>Mark</p><img src="https://community.element14.com/aggbug?PostID=19776&AppID=102&AppType=Weblog&ContentType=0" width="1" height="1">