You need to be competent to work on whatever system you propose to work on.
A chap that's only ever seen a domestic consumer unit might not be competent to start designing and installing a 3-phase commercial office installation.
why not get a start on a site and get some experience,before jumping in to something you are not wised up on,I WOULD NEVER do domestic cos i have had so little experience,my apprenticeship was airfields,colleges (new build ) hospitals etc
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