peringatan bahaya tegangan tinggi atau warning beware there is a danger of high voltage at the electrical substation

advice alert approach arrow art atau attention bahaya beware blue board caution charge closeup current danger dangerous death design detail electrical electricity energy equipment fence green hazard high icon industry information label light lighting lightning line machine metal notice number panel peringatan power precaution prevent protect risk safety security service shock sign signage signal standards substation substations supply symbol tamper tegangan tension tinggi transport triangle vehicle volt voltage wall warning warnings window wood written yellow