Do you know what IP21S is? That may seem like a meaningless acronym but for the engineers at Tokentools welding equipment supplies that denotes the level of protection the units have against water “ingress”. The units are certified for operation where occasional light dripping of water is possible. This is not a recommendation to operate in these conditions, but rather a protection standard set forth to standardize a minimum level of safety to the operator. Of course, any operation in wet or damp environments intentionally is simply stupid. Damage to the welder (person) and welding machine can still occur, and when water is present while welding, electrocution is the threat. Anytime the welder has been exposed to moisture it creates hazard, so it’s a good idea to thoroughly dry the unit in case of any water or moisture that has found its way inside the housing.Inverter welders ip21s rating
Unplug the unit, wait 5 minutes for the capacitors to discharge, open the unit and blowing out any excess water or moisture with an air line. Left over water can create internal component corrosion and seep between connections and create an area of corrosion. If any operation is required where the potential of water or damp exposure might exist, the welder should be turned on or off with a dry gloved hand. Also the welder should not be placed on the ground or on any damp conductive surface and an RCD should be used to supply the mains power. Although the work should be grounded, along with the welder wiring, the best idea is to shelter the unit with plenty of open space on the sides for cooling. Even though the level of protection is listed, it doesn’t guarantee complete safety because any number of circumstances can drive water into the welder. In other words, if you think the welder may get wet, don’t weld……use some nuts and bolts instead :).