
Copper Development Association UK
Copper Development Association Website for information on Copper and Copper Alloys
Earthing Practice by Trevor Charlton

Littelfuse - Fuses Varistors Protectors Suppressors 
"Developing and manufacturing devices that protect electronic circuits and applications from harm caused by overcurrent and overvoltage events...
During our 75 years, Littelfuse has explored the circuit protection issues of many industries and markets."
Promotions -

Megger - Electric Power Test Equipment
"For over 100 years, Megger has been the premier provider of electric test equipment and measuring instruments for electrical power applications."

AVO Training Institute is your one-stop for electrical training services, electrical safety services and electrical power engineering services. Our online electrical store provides books, personal protective equipment and tools.
Megger-Wikipedia - A megger (or sometimes meggar) is often used as a colloquial term for an insulation tester - a circuit tester which puts a very high voltage at a very low current across two conductors to make sure that they are properly insulated. The word is short for megohm-meter.

Hammond - Racks Enclosures Transformers
1917 - Hammond Manufacturing traces it's roots back to a small basement shop set-up during the years of the First World War by Oliver S. Hammond - tool & die maker by day and amateur inventor by night. (Yep...Fred's dad!!! For those who knew him - famous radio amateur VE3HC) The company became O.S. Hammond & Son and soon.... Hammond Mfg. History 

Manufactures electric resistance tubular heating elements; a tubular element is often referred to as a CalRod® element. Offer a full line of electric heating products. The list includes immersion heaters, flange heaters, screw plug heaters, tubular elements, finned tubular elements, tank heaters, and oven heaters. Established in 1989.

Why Are Finned Tubular Heating Elements So Widely Accepted For Process Heating?