The question to be determined on a motion for summary judgment is whether there exists any genuine issue as to any material fact. G.S. 1A-1, Rule 56(c). Summary judgment for defendant, in a negligence action, is proper where the evidence fails to show negligence on the part of defendant, or where contributory negligence on the part of plaintiff is established, or where it is established that the purported negligence of defendant was not the proximate cause of plaintiff’s injury. Bogle v. Duke Power Co., 27 N.C. App. 318, 219 S.E. 2d 308 (1975), cert. denied 289 N.C. 296, 222 S.E. 2d 695 (1976). In the case at bar the *204trial court improperly granted defendant’s motion for summary judgment.
[1] There was a genuine issue as to the material facts relevant to the issue of negligence on the part of defendant.
[2] Our courts have repeatedly stated that a supplier of electricity owes the highest degree of care. See Small v. Southern Public Utilities Co., 200 N.C. 719, 158 S.E. 385 (1931), and cases cited therein. This is not because there exists a varying standard of duty for determining negligence, but because of the “very dangerous nature of electricity and the serious and often fatal consequences of negligent default in its control and use.” Turner v. Southern Power Co., 154 N.C. 131, 136, 69 S.E. 767, 769 (1910). “The danger is great, and care and watchfulness must be commensurate to it.” Haynes v. The Raleigh Gas Co., 114 N.C. 203, 211, 19 S.E. 344, 346 (1894). “The standard is always the rule of the prudent man,” so what reasonable care is “varies ... in the presence of different conditions.” Small v. Southern Public Utilities Co., supra at 722, 158 S.E. at 386.
[1] We cannot agree with defendant’s argument that the “prudent man” rule has been supplanted by the requirements of the National Electrical Safety Code, adopted in 1963 as Rule R8-26 of the North Carolina Utilities Commission. Even assuming that defendant complied with the Code, we cannot say that such compliance would make defendant free of negligence as a matter of law. Taking the evidence for the moment in the light most favorable to the defendant, the record shows that the wires here were 7200 volt distribution lines (a much higher voltage than that of the house service lines, which in this case carried 122 and 240 volts) which passed the east side of the Hale house 3'10" from the side of the house, and 22'7" above the ground, clearances which complied with the National Electrical Safety Code. The distribution line was uninsulated, also in compliance with the Code. The house was Tudor style and had two stucco and wood gables, the lowest 18' and the highest 24'8".
On these facts there is a genuine issue of material fact relating to defendant’s duty to insulate the high voltage wires maintained in such close proximity to a house which would obviously need maintenance, such as paint. In Williams v. Carolina Power & Light Co., 296 N.C. 400, 402, 250 S.E. 2d 255, 257 (1979), *205our Supreme Court noted the rule in this jurisdiction with regard to the duty to insulate wires:
‘That the duty of providing insulation should be limited to those points or places where there is reason to apprehend that persons may come in contact with the wires, is only reasonable. Therefore, the law does not compel companies to insulate . . . their wires everywhere, but only at places where people may legitimately go for work, business, or pleasure, that is, where they may be reasonably expected to go.’ (cite omitted)
Moreover, we cannot say that the alleged negligence of defendant could not have been the proximate cause of Hale’s injury. As noted in Williams, supra at 403, “it is only in exceptional cases, in which reasonable minds cannot differ as to foreseeability of injury, that a court should decide proximate cause as a matter of law. ‘[P]roximate cause is ordinarily a question of fact for the jury, to be solved by the exercise of good common sense in the consideration of the evidence of each particular case.’ ” The factual occurrences of this case do not present such an exceptional case, and it is for a jury to determine whether defendant did all it was required to do under the circumstances.
Addressing the issue of contributory negligence, our courts have upheld summary judgment on the ground of contributory negligence in previous cases of injuries from contact with power lines. See Floyd v. Nash, 268 N.C. 547, 151 S.E. 2d 1 (1966) (per curiam) and Lambert v. Duke Power Co., 32 N.C. App. 169, 231 S.E. 2d 31, cert. denied 292 N.C. 265, 233 S.E. 2d 392 (1977). In these cases, however, the plaintiffs knew of the presence of the power lines, and plaintiff here would distinguish the case sub judice on the ground that the deceased had no knowledge of the existence of the power lines. She points to evidence that the deceased rarely went to the east side of the house, where the wires were located; that reeds, bamboo, shrubbery and cedar and deciduous trees grew underneath the power lines, hiding them from view; and that the line was no larger than an ordinary lead pencil.
Defendant, citing the principle that one is charged with knowledge of what he should have known, Hedrick v. Akers, 244 N.C. 274, 93 S.E. 2d 160 (1956), argues that the deceased had lived *206in the house during the winter, when no foliage would have blocked his view of the wire; that others at the scene of the accident were able to see the wire in spite of the foliage; and that three utility poles were located on the eastern boundary of the property. Mr. Looper, who had sold the house to the Hales, testified that he had seen the wires while he was living in the house.
Clearly there exists a genuine issue as to whether deceased knew or should have known of the presence of the wire. Thus a question is presented for the jury. In addition, our Supreme Court pointed out in Williams, supra at 404, that it is not necessarily true “that a person is guilty of contributory negligence as a matter of law if he contacts a known electric wire regardless of the circumstances and regardless of any precautions he may have taken to avoid the mishap.” If the granting of summary judgment was based on contributory negligence as a matter of law it was improper.
For reasons stated the judgment allowing defendant’s motion for summary judgment is
Reversed.
Judges PARKER and WEBB concur.