1.0High Voltage Experimentshttp://www.extremeelectronics.co.uk/hvexperimentsEEadminhttp://www.extremeelectronics.co.uk/hvexperiments/author/eeadmin/rich600338<blockquote class="wp-embedded-content" data-secret="OHf66n4NWL"><a href="http://www.extremeelectronics.co.uk/hvexperiments/pole-pig-diatribution-transformer/">Pole Pig (distribution transformer)</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="http://www.extremeelectronics.co.uk/hvexperiments/pole-pig-diatribution-transformer/embed/#?secret=OHf66n4NWL" width="600" height="338" title="“Pole Pig (distribution transformer)” — High Voltage Experiments" data-secret="OHf66n4NWL" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /* <![CDATA[ */ /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); /* ]]> */ </script> Pole pigs or distribution transformers are large transformers used in the supply of electricity to homes and industry. They can be used to step up mains voltage to distribution potentials (15KV or so) and are rated to large currents (15-50A at the mains side).  For Tesla coil use they need to be current limited, this is usually done with a large choke in the supply. Although very robust they are very heavy. The output from a distribution transformer is LETHALhttp://www.extremeelectronics.co.uk/hvexperiments/wp-content/uploads/2013/05/polepig.jpg