cord to connect ecoflow delta pro ultra to inlet w/interlock or generator

[makdeeling]

just want to be sure, is this the correct ext cord to connect to an inlet to power the house breakers with the ultra?

NEMA L14-30P/L14-30R, 125/250V 7500 Watts​

https://www.amazon.com/addlon-Generator-L14-30P-Extension-Transfer/dp/B0BVHGCS7W/ref=cm_cr_arp_d_product_top?ie=UTF8&th=1

also, will the cord also work to connect the ultra to the lp generator below, when it needs to be recharged? (solar is not an option).

GXS7100iRD - 7100 Watt Dual Fuel With Remote Start Inverter Generator

The A-iPower GXS7100iRD Dual Fuel With Remote Start Inverter Generator provides 7,100 starting watts and 5,700 running watts on gasoline and 6,400 starting watts and 5,100 running watts on propane.

a-ipower.com

 

[timselectric]

Probably
It's the most common one used.
You have to verify that it matches what you have on both ends.