By registering you become an Electrical contractor

By not registering , you are a handyman who performs illegal electrical work and runs the risk of prosecution under the OHSA
By not registering your insurance company will not pay out any claims under contractors all risk and possible public liability depending on the nature of the claim.
By not registering your client could refuse payment and a court of law could find that you fraudulent presented yourself as an Electrical contractor and therefore uphold the non payment until it is rectified or charge you criminally for fraud.

Besides being the legal thing to do and register as an Electrical contractor - is it really worth not registering for R120.00 per year vs the risks you will place yourself in.