The voltage is not lower, it's 240V just like most of the rest of the world.
Ahem.
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This is a fresh pic from my garage. We have a bit more than 240. If this picture had sound you'd hear my three-phase air compressor purring along in the back, because I switched the 'shop "machine power" bus on to get voltage in the outlet. It's a 3-phase feed that's controlled by a contactor and has a bunch of those emergency off buttons located in the shop. It's also, as is customary, protected against restart after power failure.
To get back on topic: In Sweden, all wiring in agriculture buildings (stables, barns et al.) is required to be on-wall, not in-wall. Most often this means PVC or PE cable nailed or screwed to the wall as can be seen above. Conduit in-wall is forbidden. This is to keep the rodent problem off the electrics, at least.
The application of insulation testing to check for faults and RCCB's (GFCI) to limit them is recommended here too -- we share most of the EU rules on this.