Nos. 88-3278, 88-3461. Argued June 6, 1989. Decided October 26, 1989. Jack D. Walker, Susan C. Sheeran, Melli, Walker, Pease Ruhly, Madison, Wis., for Northern Wire Corporation. Aileen A. Armstrong, Collis Suzanne Stocking, Robert F. Mace, N.L.R.B. Appellate Court, Enforcement Litigation, Washington, D.C., Joseph A. Szabo, N.L.R.B., Milwaukee, Wis., for N.L.R.B. Petition for review from the National Labor Relations Board. Before CUDAHY, MANION and KANNE, Circuit Judges. CUDAHY, Circuit Judge. The