It is strongly recommended to hire licensed electricians to do any wiring in your home. Legally, no handymen are not allowed to do any wiring in the state of Maryland unless they have a Master Electrical License or are working under someone else's license and insurance. The electrical trade is a skilled trade that requires a minimum of 7 years of documented work and school to be eligible to become a Master Electrician. Some handymen may know how to do the wiring while others don't and as a consumer, there is no way for you to know since they don't have the license indicating they have the proper training, let alone insurance.