( ( ( ( ( Most ( are ( insulated ( with ( plastic ( or ( rubber coverings ) ) ) ) ) ) ) but ) occasionally ) ( you ( will ( find ( ( ( ( ( ( bare , ) ( tinned ( -LRB- ( ( solder coated ) -RRB- ) ) ) ) , ) or ) plated ) ( copper wires ) ) ) ) ) ) . )
(ROOT (S (S (NP (JJS Most)) (VP (VBP are) (VP (VBN insulated) (PP (IN with) (NP (NN plastic) (CC or) (NN rubber) (NNS coverings)))))) (CC but) (ADVP (RB occasionally)) (S (NP (PRP you)) (VP (MD will) (VP (VB find) (NP (ADJP (ADJP (JJ bare)) (, ,) (ADJP (ADJP (JJ tinned)) (PRN (-LRB- -LRB-) (NP (NN solder) (CD coated)) (-RRB- -RRB-))) (, ,) (CC or) (ADJP (JJ plated))) (NN copper) (NNS wires))))) (. .)))
Most are insulated with plastic or rubber coverings but occasionally you will find bare, tinned (solder coated), or plated copper wires.
(ROOT (S (NP (JJ Electrical) (NNS wires)) (VP (VBP are) (ADVP (RB usually)) (VP (VBN covered) (PP (IN with) (NP (NN plastic) (CC or) (NN rubber))) (S (VP (TO to) (VP (VB insulate) (NP (DT the) (JJ electrical) (NN wire))))))) (. .)))
Electrical wires are usually covered with plastic or rubber to insulate the electrical wire.