Outdoor Battery Cabinet Installation: Siting, Bases, Fixing and Service

A weatherproof battery cabinet can still fail for reasons that have nothing to do with the cabinet. It can stand in water, it can be fixed to a base that moves, it can be walled in so that a technician cannot open a door, or it can be sited where the sun puts more heat into it than the enclosure was ever asked to remove. Siting and installation are where a good enclosure is either allowed to work or prevented from working.

Read the Site Before You Read the Drawing

Most installation problems are visible on site on the first visit, long before a drawing is issued.

Bases, Plinths and What the Cabinet Stands On

• Stand the cabinet on a flat, rigid, level base, above the local flood and splash line.
• Provide a raised kerb or plinth where surface water is a risk, and think about where that water will go.
• Put the fixing pattern on the drawing, so the civil work can be built to match rather than drilled on the day.
• Allow for levelling, because ground is rarely as flat as a drawing implies.
• Consider access for lifting equipment, and provide lifting points or a documented slinging method.
• Where the ground may settle, design the base to take up movement, rather than relying on the cabinet's stiffness.

Wind, Snow and Seismic Loads

• Take the load figures from the local building code for that site, exposure and height.
• Check the fixings, not just the panels; a cabinet is only as fixed as the bolts in the base.
• Provide a roof and vent arrangement that does not collect snow or let drifted snow block an air path.
• Where the site is seismic, follow the anchorage requirements of the applicable code, including any restraint the customer's design calls for.
• Record the assumed loads in the project file, so a future move to another site can be assessed.

Water: Drainage, Splash and Standing Water

• Keep the cabinet above the water, and keep water away from the door bottom seal.
• Provide drainage for the base area so that the cabinet does not sit in a puddle.
• Use a hood or drip edge over doors and openings where driving rain is severe.
• Route cable entries from below, so that water cannot follow a cable into the enclosure.
• Remember that a door bottom seal is the hardest seal to keep working; protect it by design, not by hope.

Clearances, Access and Working Space

• Provide enough space for every door to open to its working angle, unobstructed.
• Provide standing room with tools in front of each access side, including for a laptop and test equipment.
• Keep the air path clear, even where that means giving up a convenient spot.
• Do not let a future fence, pipe or cable tray quietly consume the clearance.
• Mark the required maintenance zone on the site layout drawing.

Cable Entry and Ground Works

• Plan the cable route from the cabinet to the source before the civil work is poured.
• Provide ducts, draw pits or a trench sized for the cables plus spare capacity.
• Keep power and signal separated along the route and through the entry.
• Provide glands, sealing washers and strain relief at every entry.
• Leave spare entries with blanking plates for future work.
• Coordinate the earth electrode and the lightning protection interfaces with the electrical installer.

Siting for Thermal Performance

• Treat solar gain as part of the heat load, not as an afterthought.
• Prefer shade or an orientation that reduces direct sun on the hottest face, where the site allows.
• Think about air movement around the cabinet; a cabinet in a still corner runs hotter than one with a breeze.
• Keep the cabinet away from other heat sources, including exhausts and hot walls.
• Choose a light surface colour where solar gain matters, and say so at the design stage when it can still be changed.

Earthing and Lightning Protection Interfaces

• Provide a bonding point on the enclosure, sized and labelled for the installation.
• Keep the earth conductor route short and accessible.
• Where lightning protection is required, coordinate the down-conductor position and the separation distance with the installer.
• Bond doors and removable panels to the enclosure earth.
• Record the bonding points on the as-built drawing, because they will be tested later.

Fixing Methods and Materials at the Interface

• Match the fixing material to the base and the environment; a steel bolt in a coastal site is a maintenance item.
• Use stainless or suitably coated fixings outdoors, and specify the grade.
• Isolate dissimilar metals at the interface to avoid galvanic corrosion.
• Provide slotted or oversize holes where alignment would otherwise be difficult, with a washer that still spreads the load.
• Record the fixing specification so a replacement uses the same thing.

Installation Checks

How We Help With Installation Design

• We provide the base fixing pattern, door swing envelope, weight, lifting points and centre of gravity with the enclosure drawings.
• We can mark the required clearances and the vent discharge zone on a layout for the site drawing.
• We will say when the chosen site conditions call for a stronger structure, a higher plinth or a different protection class than the standard product.
• We supply the enclosure and its accessories; we do not carry out civil works or electrical installation.
• Every quotation states which operations are completed in our plant.

Send the site conditions and the fixing constraints, and the cabinet can be built to suit the ground it will actually stand on.

Frequently Asked Questions