Posted By PW74 Does anyone know what / if there are any guidelines for use of Breakers / RCDs on electrical equipment on construction sites. We have a number of electrically powered tools (drills, hammers etc) on site, not all of which are connected up to an RCD etc. Is there any guidance on this?

Posted By steven bentham You should have a big push for low voltage particular in wet or outdoors.

Posted By mark gough2 I would agree with previous postings the hierarchy is quite clear:- Battery operated 110volt centre tapped to earth Both of which virtually eliminate the risk of fatal electrical shock burn injuries. Neither require an RCD and the maintenance schedule can be quite relaxed. The use of mains 230volt equipment on construction sites is "an unacceptable risk of death or serious injury" Unless it is RCD protected etc etc etc..the controls required run to three pages in HSG141 Electrical safety on construction sites. In my experience there is no need to have 230 volt tools on construction sites. Site cabins should be RCD protected and equipment such as hoists etc which cannot be sourced at 110 volt should be rcd protected. Remember an RCD only provides supplementary protection and should never be used as a primary source of protection. They should be tested daily by push button and monthly by trained electrician.