About wire connectors Peel off the 8mm-10mm insulation, insert the wire into the hole until you feel resistance, then lower the orange lever and complete the operation. Protection against electrical shock, touch safe. Low installed cost and safe operation. With flame retardant insulation materials and stainless steel spring structure, makes the wire connection does not fall off. Electrical specs: 600 V (1000 V signs and fixtures) 20 A maximum. Terminates 28-12 AWG. Maximum operating temperature: 105 C .