Electrical junction box assembly

In combination with a conduitless electrical wire of relatively small diameter and having a larger diameter electrical componenet connected to one end thereof, an electrical junction assembled secured to said wire, said assembly comprising a box, a sheath having a flared rim, and a compression ring, said box having at least one wire-receiving limb including a free end having a male thread thereon and formed of synthetic resin, said limb including a first relatively wider diameter opening of sufficient size to receive said electrical component therein and a second relatively narrower opening communicating with said first opening and through which said conduitless electrical wire extends, said first and second openings forming a shoulder at their union, said compression ring including a female thread, said sheath being disposed about said wire with the flared rim thereof abutting the free end of the limb, said compression ring being disposed about said sheath with the female thread thereof in threaded engagement with the male thread of said limb whereby said sheath is compressed into engagement with the wire to form a fluid-tight seal with said box and whereby said electrical component is closely held within the larger diameter opening in said limb between the shoulder and said flared rim.