Does oversize wiring pay for itself?

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Oversize wire (cool), short wire runs (locate transformers close to the lighting- (sometimes placing them a floor above or below may be the shortest route to the lighting and gets it out of the immediate area,  separate runs of oversized wire, oversize the transformer, surface mount the transformer and lamps?

 

The electric bill for each 50 watt lamp that is 50 feet away will cost $20 per year if run 10 hours every day(360 days at $0.10 per KWhr using 14 AWG wire).  Running THREE of these lamps using separate runs will cost $60 per year. Powering all three lamps off a single 14 AWG run back to the transformer will cost $71 a year.

 

14-2 AWG romex costs about $0.05 per foot.  The extra wire costs about $2.50 per run or $5.00 above the cost of running a single run.  This pays itself in about 6 months in this example and keeps on paying benefits for years and years.

 

It has been proven time and time again that the initial cost of the lighting only accounts for  about 15% of the total cost to the end user over the life of the installation.  Therefore, the extra money up front should be paid when it produces the correct result and results in long term savings through efficient performance and/or reduced maintenance costs.

 

Article 90-1(b) states that "hazards often occur because of overloading of wiring systems by methods or usage not in conformity with the N.E.C.  This occurs because initial wiring did not provide for increases in the use of electricity.  An initial adequate installation and reasonable provisions for systems changes will provide for future increases in the use of electricity."