examined Heat Lamp unit, breaker shut off. Removed power switch panel and found 20a household On/Off switch and all wiring inside conduit box burnt up. Best course of action would be to replace unit as age is unknown, no model or serial number on unit. Looks to be a crescor but no other information. Unit is 60" 120V. If replacement is not an option, unit will need incoming power wire cut back and stripped, 20a Switch replaced, Wire going to elements from switch replaced. Wires look to be 10 gauge. Power to unit is currently off and should not be switched back on. Closing out this work order.