Electrical Manholes / Transformer Pads Contact Us See Resources/Brochures for Electrical Manholes / Transformer Pads Electrical Manholes / Transformer Pads 3′ Dia. EMH 4′ x 4′ B EMH 4′ x 4′ EMH 5′ x 5′ B EMH 5′ x 5′ C EMH 5′ x 5′ EMH 6′ x 6′ EMH Primary/Secondary Pull Box PBNE17 Primary/Secondary Pull Box Switch Gear Multi Phase Junction Function 6’6″ x 6′ Transformer Pad 6’9″ x 5’4″ National Grid Transformer Pad 6’11” x 6’10” National Grid Transformer Pad 7’2″ x 6’5″ 750 KVA N-Star Transformer Pad 3 Phases Transformer up to 1000 KVA