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Save power by up-sizing your cables!

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I hope I’ve got this right – the premis is that a lot of power is lost in a system because the cables are too small – heat up and thereby lose electricity. This system seems to ‘read’ where the energy is getting blocked and reduces power along that cable. Mighty complicated but it might work.

Now NOTHING beats powering down but – sizing up re cables would help with efficiency too.

Per the NEC, the design of a typical 20 amp circuit with 1.9 kVA load requires #12 AWG Branch Circuit Conductors installed in ½” conduit. Applying the engineering equation below, 4.22% of the energy delivered to the load will be dissipated per 100 Ft. of branch circuit conductor.If the #12 AWG is modified to #10 AWG and installed in the same ½” conduit, then only 2.53% of the energy delivered to the load will be dissipated through the same 100 Ft. of branch circuit conductor. This is a reduction in energy loss of approximately 40%. The Simple Return on Investment (ROI) is 1.92 years per the calculation below.Energy Losses = I² x R
Where R is the conductor resistivity and I is the current in amps

Design of Circuit without using the Energy Savings Module, ERASE
Energy Losses = 0.100 kVA
Modified Energy Losses with the Energy Savings Module, ERASE
Energy Losses= 0.06 kVA
Comparison = 0.04 kVA saved with the Energy Saving Module, ERASE

Annual Energy Loss Cost “as designed”= $41.62 per circuit
Annual Energy Loss Cost modified with Energy Savings Module, ERASE = $24.97 per circuit
Annual savings modified with Energy Savings Module, ERASE = $16.65 per circuit

The cost increase for #10 wire = $32.00 per circuit
Simple Return on Investment (ROI) = $32.00/$16.65 in 1.92 years

Just these simple steps and Power Calc PaK, automatically generates a power distribution system that saves energy and reduces the facility’s carbon footprint. Significant savings are achieved by minimizing energy wasted through heat loss and maximizing energy saved. Implementation of your green design is cost effective as the price of conductors remains competitive compared with the costs of oil and alternative energy sources.

See ICA (International Copper Association) news release of February 13,2011.

Energy Savings Module Worksheet – Click to Enlarge


About pfiddle

Fiddle teacher - mostly Irish trad. Fiddle, mandolin and concertina. Eco-warrior, won E.U. Green Flower Award for Eco Accommodation. Also Irish (Gold) GHA. Green Hospitality Award. Mad keen on self-build - especially straw-bale and cob. 55 with a full head of (slightly) graying hair. No tattoos or piercings. Fond of animals - but legally so. Fond of food - I eat nothing else. Vegetarian by choice, Irish by the grace of birth, Munster by force of (rugby) arms.

3 responses »

  1. I am James Khalil the author of this article that you are referring to in your post. I appreciate you liking the idea of the energy savings. Imagine how much money you will be saving if you apply this concept to each circuit in the building wiring system. It is a tedious calculation but I simplified the process by using Power Calc PaK software. Please visit for more info. Please like us on Facebook


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