16 KW generator feeder conductors

[rojay]

On a 16 KW generator where the nameplate states the rated maximum continuous load current is 66.6 amps- is there any exception that would allow #6 wire to be used for the feeder?
The generator has a 70amp breaker for overload protection and #6 wire could be fused at 70 amps but isn’t the max load current rating the deal breaker here requiring #4 conductors?

 

[jaggedben]

The only scenario where I think 6awg could be permitted is if all the terminals it's connected to were rated for 90C. That is almost certain to not be the case.

 

[GoldDigger]

You can always run #4 at each end for 3' or more, then cut over to #6 using a 90 degree rated connection means for the long run.

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[SceneryDriver]

You can always run #4 at each end for 3' or more, then cut over to #6 using a 90 degree rated connection means for the long run.

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Just because you can doesn't really mean you should. The cost of the splices (probably Polaris connectors) j-boxes, and labor could pay for a lot of #4 wire.

This sounds like a residential application; the cost difference between #6 and #4 wire has to be negligible at this scale.



SceneryDriver

 

[LarryFine]

If you want to save money, use #2 al SER. I even use it on 20Kw units.