NEMA L14-30R vs NEMA 14-50R

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Old 08-29-14, 10:58 AM
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Question NEMA L14-30R vs NEMA 14-50R

I recently purchased a 7500 running watt portable gen-set that has 1 NEMA L14-30R 120/240 30amp receptacle and 1 NEMA 14-50R 120/240 50 amp receptacle and have a question. If you do the math 7500 watts / 240 volts = 31.25 amps. How can the NEMA 14-50R be rated at 120/240 50 amps?
 
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Old 08-29-14, 11:21 AM
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Generator

The wattage rating determines the generator output.

The two receptacles give you a choice on how you connect to the generator.
 
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Old 08-29-14, 02:07 PM
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If the generator is rated at a maximum output of 31.25 amps then why use a 50 amp receptacle?
 
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Old 08-29-14, 06:48 PM
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If the generator is rated at a maximum output of 31.25 amps then why use a 50 amp receptacle?
Good question. What is the brand and model number of the generator?
 
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Old 08-30-14, 01:05 AM
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If you're using the generator to power your house via a transfer switch or interlock, use the L14-30R.(If equipped) The 14-50R is most likely there for rv'ers or other portable power applications so you don't need an adaptor.
 
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