daveo4EV
Well-Known Member
- First Name
- David
- Joined
- Jan 28, 2019
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- Santa Cruz
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- Cayenne Hybrid, 911(s) GT3/Convertable
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- #106
cost - purely cost - copper wire is expensive these days - and your electrician will pull either 3 wire 6/8 gauge wire (hot, hot, ground) or 4 wire 6/8 gauge wire (hot, hot, neutral, ground) - depending on time of day, supply chain issues, wholesale vs. retail, inventory, time, temperature, DJ industrial averages, and number of butterflys in your garden - the cost for wire may vary wildly - and less wire tends to be cheaper than more wire so - given that there is infact 25% less wire in a 3 wire pull vs. a 4 wire pull - if you’re planning for 50 feet or more and there is a $1 difference per-foot - then you’ll save at least $75 pulling 75 ft of 3 wire bundle vs. a 4 wire bundle…At what length does "longer run" roughly start, where 3-wire cable and NEMA 6-50 receptacle should be considered?
I have NO Problem pulling 3 wires vs. 4 wires - but I do recommend pulling higher amp gauge wire to allow for easy upgrades (at greater initial cost) in the future - it’s a one time cost of materials and labor - and while you may be installing a 40 EVSE today - you might want to upgrade to a 60 amp EVSE in few years and pulling this stuff again is both time consuming and expensive in terms of throwing away the old wire and purchasing new wire…
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