30 amp extension cord soow2/24/2024 ![]() ![]() That's what I get for doing too many things at one time. This item: Iron Box 50ft L21-30 Extension Cord - Durable and Reliable 30A, 120/208V, 3-Phase, 8/5 SOOW Portable Generator Cord for Transfer Switches, Data Centers, and Other High-Powered Applications (Black) 346.48 346. Stay safe! We have enough smoky days these days and don't need your "burnt offerings". de-rated to 18 Amps when the cable is longer than 50 ft. 16 Gauge wiring is not even mentioned in the chart referenced above. Houseables Generator Cord 30 Amp 4 Prong, Generators Extension, 25 Ft, 125-250v, 7500 watt max Rating, UL CUL, NEMA L-14. The TPE rubber insulation also withstands chemicals. To use the OF 2200 as an example, here in the US where the standard voltage can range from 110 VAC to 125 VAC, the OF 2200 can draw 17.6 amps at 125 VAC, but 20 amps at 110 VAC, so the higher current draw at 110 VAC mandates the use of 12 gauge copper wiring per the National Electrical Code (NEC), which is echoed in the NFPA document Kellough, I'd suggest that you revise your work practice and migrate to 20 12 gauge wiring ASAP for the use case you mentioned. SEOOW cable has an oil-resistant outer and inner insulation, and water-resistant outer insulation. GearIT 30-Amp Generator Extension Cord (10 Feet) 4-Prong 120/250-Volt 7500W, NEMA L14-30P/L L14-30R, 10 Gauge SJTW Locking Power Cord for Manual Transfer Switch, Portable Generators, Power Outage 10ft. This holds true even in the UK where they speak funny. ![]() As for the formula, it's standard around the world - P=EI where P equates to Power in watts, E equates to Energy in Volts, and I equates to Intensity in amps. The recommendations in my message are for copper wire (not aluminum) as delineated in the NFPA's NEC Ampacity Workflow chart, Table 310.16 on page 3 in the most conservative cases. 4-Prong L14-30P / L14-30R 30 Amp Generator Extension Cord 10AWG4 125/250V STW VELCRO STRAP UL APPROVED (2-Pack) Compare.
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