( ( ( Make sure ) ( that ( ( home insulation ) ( ( is not ) ( in ( contact ( with ( electrical wiring ) ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Make) (ADJP (JJ sure)) (SBAR (IN that) (S (NP (NN home) (NN insulation)) (VP (VBZ is) (RB not) (PP (IN in) (NP (NP (NN contact)) (PP (IN with) (NP (JJ electrical) (NN wiring))))))))) (. .)))
Make sure that home insulation is not in contact with electrical wiring.
(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.