This “lock” was intended to be applied to the use of the regulation making power in certain circumstances as a way of responding to concerns that the power was unusually broad.
Bwriedid i'r “clo” hwn gael ei gymhwyso i'r defnydd o'r pŵer i wneud rheoliadau mewn rhai amgylchiadau fel ffordd o ymateb i bryderon bod y pŵer yn anarferol o eang.