How to calculate Scope 3 Cat 11 ? Grid emission factors?

Hi,

What are the emission factors used for setting a target on Scope 3 ?
Example: We produce machines, Scope 3 Cat 11 (Use of sold products) is calculated by multiplying lifetime electricity consumption of the machines and the grid emission factor where the machine is used. Ecoinvent proposes “scope2” grid emission factor and “Scope2&3” grid emission factor. GHG protocol requires that we use “Scope 2” grid emission factor et only recommends that we use “scope2&3” grid emission factor. Does SBT have the same approach to set targets ?