Based on your previous comment there seems to be conflicting information as I have the dreaded 3 to indicate that it is not multi-segwit.
Addresses which begin with 3 may or may not be SegWit, and may or may not be multi-sig. It all depends on how you set it up. Electrum does not create SegWit addresses beginning with 3 though - it will only let you import them. So if you created your 3 addresses in Electrum, which it very much sounds like you did, then it will be multi-sig legacy rather than SegWit or multi-sig SegWit.
I did try to take the seed from Electrum and use it to start a new wallet on Electron Cash earlier, maybe I missed something.
If you try to recover it as a standard wallet it won't accept the seed. Make sure you select "2FA".